wiptty

316 files changed, 13511 insertions, 114 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9820c84..746b1bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-# wanix, a Unix-like operating system for WebAssembly
+# wanix, a Unix-like operating system for WebAssembly applications.
 # Copyright (C) 2025  Xavier Del Campo Romero
 #
 # This program is free software: you can redistribute it and/or modify
@@ -24,10 +24,11 @@ ExternalProject_Add(tools
     CMAKE_ARGS
         -D CMAKE_INSTALL_PREFIX=${TOOLS_PREFIX})
 
-project(wanix C)
+project(wanix C ASM)
+option(WANIX_BUILD_PROGRAMS "Build userspace programs" ON)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)
 
-add_compile_options(-mno-gpopt)
+add_compile_options(-mno-gpopt -ffunction-sections -fdata-sections)
 
 if(CMAKE_TOOLCHAIN_FILE MATCHES "ps1")
     set(PS1_BUILD 1)
@@ -40,7 +41,7 @@ else()
     set(SDL1_2_BUILD 1)
 endif()
 
-add_executable(${PROJECT_NAME} ${exec_flags} "src/main.c")
+add_executable(${PROJECT_NAME} ${exec_flags} src/main.c)
 
 if(SDL1_2_BUILD)
     find_package(SDL 1.2 REQUIRED)
@@ -62,12 +63,16 @@ set(cdroot ${CMAKE_BINARY_DIR}/cdimg)
 file(MAKE_DIRECTORY ${cdroot})
 
 if(PS1_BUILD)
-    include("cmake/ps1.cmake")
+    include(cmake/ps1.cmake)
 elseif(WIN9X_BUILD)
-    include("cmake/win9x.cmake")
+    include(cmake/win9x.cmake)
 elseif(HOST_BUILD)
-    include("cmake/host.cmake")
+    include(cmake/host.cmake)
 endif()
 
-add_subdirectory("res")
-add_subdirectory("src")
+add_subdirectory(res)
+add_subdirectory(src)
+
+if(WANIX_BUILD_PROGRAMS)
+    add_subdirectory(programs)
+endif()
diff --git a/cmake/FindWASI_SDK.cmake b/cmake/FindWASI_SDK.cmake
new file mode 100644
index 0000000..037aca6
--- /dev/null
+++ b/cmake/FindWASI_SDK.cmake
@@ -0,0 +1,27 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+find_program(WASI_SDK_CLANG
+    clang
+    PATHS
+        /opt/wasi-sdk/bin
+        ENV WASI_SDK_PATH
+)
+
+include(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(WASI_SDK
+    REQUIRED_VARS WASI_SDK_CLANG)
diff --git a/cmake/ps1.cmake b/cmake/ps1.cmake
index 21d77fa..83bdad7 100644
--- a/cmake/ps1.cmake
+++ b/cmake/ps1.cmake
@@ -29,15 +29,8 @@ set(license $ENV{PSXSDK_PATH}/share/licenses/info${region}.dat)
 add_custom_target(bin_cue ALL mkpsxiso ${PROJECT_NAME}.iso ${PROJECT_NAME}.bin
     ${license} -s DEPENDS iso)
 
-if(NOT EXISTS "${cdroot}/system.cnf")
-    file(COPY "src/ps1/system.cnf" DESTINATION "${cdroot}")
-endif()
-
 if(CMAKE_BUILD_TYPE STREQUAL "Debug")
     set(cflags ${cflags} -Og)
 else()
     set(cflags ${cflags} -Os)
 endif()
-
-set(cflags ${cflags} -fshort-enums)
-# libfixmath is already bundled with PSXSDK.
diff --git a/programs/CMakeLists.txt b/programs/CMakeLists.txt
new file mode 100644
index 0000000..36ab64b
--- /dev/null
+++ b/programs/CMakeLists.txt
@@ -0,0 +1,32 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set(programs
+    initd
+    yes
+)
+
+include(ExternalProject)
+
+foreach(p ${programs})
+    ExternalProject_Add(${p}_project
+        SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/${p}
+        CMAKE_ARGS
+            -D CMAKE_TOOLCHAIN_FILE=${CMAKE_CURRENT_LIST_DIR}/wasi-sdk-toolchain.cmake
+            -D CMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}
+            -D CMAKE_INSTALL_PREFIX=${cdroot}
+    )
+endforeach()
diff --git a/programs/initd/CMakeLists.txt b/programs/initd/CMakeLists.txt
new file mode 100644
index 0000000..39e19f5
--- /dev/null
+++ b/programs/initd/CMakeLists.txt
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+cmake_minimum_required(VERSION 3.13)
+include(GNUInstallDirs)
+project(initd C)
+add_executable(${PROJECT_NAME} initd.c)
+install(TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_BINDIR})
diff --git a/programs/initd/initd.c b/programs/initd/initd.c
new file mode 100644
index 0000000..63685df
--- /dev/null
+++ b/programs/initd/initd.c
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+
+int main(void)
+{
+    return EXIT_FAILURE;
+}
diff --git a/programs/wasi-sdk-toolchain.cmake b/programs/wasi-sdk-toolchain.cmake
new file mode 100644
index 0000000..d29eedd
--- /dev/null
+++ b/programs/wasi-sdk-toolchain.cmake
@@ -0,0 +1,19 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+find_package(WASI_SDK REQUIRED)
+set(CMAKE_C_COMPILER ${WASI_SDK_CLANG})
+set(CMAKE_C_COMPILER_WORKS 1)
diff --git a/programs/yes/CMakeLists.txt b/programs/yes/CMakeLists.txt
new file mode 100644
index 0000000..18c6e22
--- /dev/null
+++ b/programs/yes/CMakeLists.txt
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+cmake_minimum_required(VERSION 3.13)
+include(GNUInstallDirs)
+project(yes C)
+add_executable(${PROJECT_NAME} yes.c)
+install(TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_BINDIR})
diff --git a/programs/yes/yes.c b/programs/yes/yes.c
new file mode 100644
index 0000000..4bd5cf4
--- /dev/null
+++ b/programs/yes/yes.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    for (;;)
+        puts("y");
+
+    return EXIT_SUCCESS;
+}
diff --git a/res/CMakeLists.txt b/res/CMakeLists.txt
index 8fb119e..b981ac2 100644
--- a/res/CMakeLists.txt
+++ b/res/CMakeLists.txt
@@ -1,10 +1,26 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 include(${CMAKE_CURRENT_LIST_DIR}/functions.cmake)
 
 sprite(NAME font
-    X 472
+    X 640
     Y 0
     BPP 4
-    CX 368
+    CX 640
     CY 498
     TRANSPARENT TRUE)
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0f28e58..2eff797 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-# wanix, a Unix-like operating system for WebAssembly
+# wanix, a Unix-like operating system for WebAssembly applications.
 # Copyright (C) 2025  Xavier Del Campo Romero
 #
 # This program is free software: you can redistribute it and/or modify
@@ -15,16 +15,25 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 add_subdirectory(nanowasm)
+add_subdirectory(dynstr)
 target_link_libraries(${PROJECT_NAME} PRIVATE nanowasm)
 
 # Avoid C11 since it is not supported by the i386-mingw32 toolchain.
-set(cflags ${cflags} -Wall -ffunction-sections -fdata-sections -pedantic)
+set(cflags ${cflags} -Wall -pedantic)
 
 set(components
     aio
+    drv
+    fs
+    gfx
+    init
+    io
+    kprintf
+    loop
 )
 
 set(interfaces
+    state
 )
 
 if(PS1_BUILD)
@@ -35,10 +44,10 @@ endif()
 target_compile_options(${PROJECT_NAME} PUBLIC ${cflags})
 target_compile_options(nanowasm PUBLIC ${cflags})
 # Dependencies for main.c
-# target_link_libraries(${PROJECT_NAME} PRIVATE)
+target_link_libraries(${PROJECT_NAME} PRIVATE gfx init loop)
 
 foreach(c ${components})
-    add_subdirectory("${c}")
+    add_subdirectory(${c})
     target_compile_options(${c} PUBLIC ${cflags})
     target_compile_features(${c} PUBLIC c_std_99)
     set_target_properties(${c} PROPERTIES C_STANDARD 99 C_EXTENSIONS OFF)
@@ -50,9 +59,9 @@ foreach(c ${components})
 endforeach()
 
 foreach(i ${interfaces})
-    add_subdirectory("${i}")
+    add_subdirectory(${i})
     target_compile_options(${i} INTERFACE ${cflags})
-    target_link_libraries(${PROJECT_NAME} PRIVATE ${c})
+    target_link_libraries(${i} INTERFACE ${c})
 endforeach()
 
 target_link_options(${PROJECT_NAME} PRIVATE -Wl,--gc-sections)
diff --git a/src/aio/CMakeLists.txt b/src/aio/CMakeLists.txt
index 3f4561a..a335457 100644
--- a/src/aio/CMakeLists.txt
+++ b/src/aio/CMakeLists.txt
@@ -1,6 +1,11 @@
 set(src
-    "src/close.c"
-    "src/open.c"
+    src/free.c
+    src/mkdir.c
+    src/mount.c
+    src/open.c
+    src/poll.c
 )
 add_library(aio ${src})
-target_include_directories(aio PUBLIC "include" PRIVATE "private_include")
+add_subdirectory(src)
+target_include_directories(aio PUBLIC include PRIVATE private_include)
+target_link_libraries(aio PUBLIC fs INTERFACE state)
diff --git a/src/aio/include/aio.h b/src/aio/include/aio.h
index f9f76cb..cea6ee1 100644
--- a/src/aio/include/aio.h
+++ b/src/aio/include/aio.h
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -19,17 +19,40 @@
 #ifndef AIO_H
 #define AIO_H
 
+#include <fs/fs.h>
+#include <sys/types.h>
+#include <state.h>
+#include <stdbool.h>
 #include <stddef.h>
 
-enum
+struct aio_poll
 {
-    AIO_POLLIN = 1,
-    AIO_POLLOUT = 1 << 1
+    const struct aio *aio;
+    bool done;
+    int error;
+    struct aio_poll *prev, *next;
 };
 
-struct aio *aio_open(const char *path, const char *mode);
-int aio_poll(struct aio **io, size_t n);
-int aio_event(const struct aio *io, int ev);
-int aio_close(struct aio *io);
+struct aio_done
+{
+    int (*f)(enum state state, void *args);
+    void *args;
+};
+
+struct aio_mount
+{
+    struct fs_mount mount;
+    const char *type;
+};
+
+struct aio *aio_mount(const struct aio_mount *m, const struct aio_done *d);
+struct aio *aio_mkdir(const struct fs_mkdir *m, const struct aio_done *d);
+struct aio *aio_open(const struct fs_open *o, const struct aio_done *d);
+struct aio *aio_read(const struct fs_read *r, const struct aio_done *d);
+struct aio *aio_write(const struct fs_write *w, const struct aio_done *d);
+struct aio *aio_close(const struct fs_close *c, const struct aio_done *d);
+struct aio *aio_stat(const struct fs_stat *s, const struct aio_done *d);
+int aio_poll(struct aio_poll *p, int ms);
+void aio_free(struct aio *io);
 
 #endif
diff --git a/src/aio/private_include/aio/types.h b/src/aio/private_include/aio/types.h
index 31ee414..32a7545 100644
--- a/src/aio/private_include/aio/types.h
+++ b/src/aio/private_include/aio/types.h
@@ -1,16 +1,32 @@
-#ifndef AIO_PRV_OPEN_H
-#define AIO_PRV_OPEN_H
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
 
-enum aio_state
-{
-    AIO_OK,
-    AIO_AGAIN,
-    AIO_FATAL
-};
+#ifndef AIO_TYPES_H
+#define AIO_TYPES_H
+
+#include <aio.h>
+#include <fs/fs.h>
 
 struct aio
 {
-    enum aio_state (*next)(struct aio *);
+    int error;
+    struct fs_ret r;
+    struct aio_done done;
 };
 
 #endif
diff --git a/src/aio/src/CMakeLists.txt b/src/aio/src/CMakeLists.txt
new file mode 100644
index 0000000..8848842
--- /dev/null
+++ b/src/aio/src/CMakeLists.txt
@@ -0,0 +1,9 @@
+target_sources(aio PRIVATE
+    free.c
+    mkdir.c
+    mount.c
+    open.c
+    poll.c
+    stat.c
+    write.c
+)
diff --git a/src/aio/src/close.c b/src/aio/src/free.c
index a6067a8..3a84f1b 100644
--- a/src/aio/src/close.c
+++ b/src/aio/src/free.c
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -17,18 +17,9 @@
  */
 
 #include <aio.h>
-#include <errno.h>
-#include <stdio.h>
 #include <stdlib.h>
 
-int aio_close(struct aio *const aio)
+void aio_free(struct aio *const aio)
 {
-    if (!aio)
-    {
-        errno = EINVAL;
-        return EOF;
-    }
-
     free(aio);
-    return 0;
 }
diff --git a/src/aio/src/mkdir.c b/src/aio/src/mkdir.c
new file mode 100644
index 0000000..3a7fae6
--- /dev/null
+++ b/src/aio/src/mkdir.c
@@ -0,0 +1,137 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <aio.h>
+#include <aio/types.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct mkdir
+{
+    struct fs_mkdir mkdir;
+    struct aio_done done;
+    char *path, *parent;
+    struct aio *aio;
+};
+
+static void free_mkdir(struct mkdir *const mk)
+{
+    if (mk)
+    {
+        free(mk->path);
+        free(mk->parent);
+    }
+
+    free(mk);
+}
+
+static int done(const enum state state, void *const args)
+{
+    int ret = 0;
+    struct mkdir *const mk = args;
+    const struct aio_done *const d = &mk->done;
+
+    if (d->f)
+        ret = d->f(state, d->args);
+
+    free_mkdir(mk);
+    return ret;
+}
+
+static int search_done(const enum state state,
+    const char *const relpath, const struct fs_mp *const mp,
+    const union inode_result *const inode, void *const args)
+{
+    struct mkdir *const mk = args;
+    struct aio *const aio = mk->aio;
+    const struct fs *const fs = mp->fs;
+    const char *path = mk->path;
+    struct fs_ret r;
+
+    path += strlen(mp->tgt) + strlen(relpath);
+    mk->mkdir.path = path;
+
+    if (fs->mkdir(&mk->mkdir, mp, inode, &r))
+        goto failure;
+
+    aio->r = r;
+    return 0;
+
+failure:
+    aio->error = errno;
+    aio->done = mk->done;
+    free_mkdir(mk);
+    return -1;
+}
+
+struct aio *aio_mkdir(const struct fs_mkdir *const m,
+    const struct aio_done *const d)
+{
+    struct aio *aio = NULL;
+    struct mkdir *mk = NULL;
+    char *const pathdup = strdup(m->path), *parent = NULL;
+
+    if (!pathdup
+        || !(parent = fs_parent(m->path))
+        || !(mk = malloc(sizeof *mk))
+        || !(aio = malloc(sizeof *aio)))
+        goto failure;
+
+    *mk = (const struct mkdir)
+    {
+        .path = pathdup,
+        .parent = parent,
+        .aio = aio,
+        .mkdir = *m
+    };
+
+    *aio = (const struct aio)
+    {
+        .done =
+        {
+            .args = mk,
+            .f = done
+        }
+    };
+
+    const struct inode_search s =
+    {
+        .path = parent,
+        .done = search_done,
+        .args = mk
+    };
+
+    if (d)
+        mk->done = *d;
+    else if (inode_search(&s, &aio->r))
+        goto failure;
+
+    return aio;
+
+failure:
+    free(mk);
+    free(aio);
+    free(parent);
+    free(pathdup);
+    return NULL;
+}
diff --git a/src/aio/src/mount.c b/src/aio/src/mount.c
new file mode 100644
index 0000000..e90d8de
--- /dev/null
+++ b/src/aio/src/mount.c
@@ -0,0 +1,175 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <aio.h>
+#include <aio/types.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct mount
+{
+    char *src, *tgt;
+    struct aio *aio;
+    const struct fs *fs;
+    struct fs_mount mount;
+    struct aio_done done;
+};
+
+static void free_mount(struct mount *const m)
+{
+    if (m)
+    {
+        free(m->src);
+        free(m->tgt);
+    }
+
+    free(m);
+}
+
+static int done(const enum state state, void *const args)
+{
+    int ret = 0;
+    struct mount *const m = args;
+    const struct aio_done *const d = &m->done;
+
+    if (d->f)
+        ret = d->f(state, d->args);
+
+    free_mount(m);
+    return ret;
+}
+
+static int search_done(const enum state s, const char *const relpath,
+    const struct fs_mp *const mp, const union inode_result *const inode,
+    void *const args)
+{
+    struct mount *const m = args;
+    struct aio *const aio = m->aio;
+    const struct fs *const fs = m->fs;
+
+    if (strcmp(m->tgt, "/"))
+    {
+        if (!inode)
+        {
+            aio->error = ENOENT;
+            goto failure;
+        }
+        else if (mp->fs->iops.flags(inode) & INODE_MOUNTPOINT)
+        {
+            aio->error = EBUSY;
+            goto failure;
+        }
+    }
+
+    if (fs->mount(&m->mount, &aio->r))
+    {
+        aio->error = errno;
+        goto failure;
+    }
+
+    return 0;
+
+failure:
+    aio->done = m->done;
+    free_mount(m);
+    return -1;
+}
+
+struct aio *aio_mount(const struct aio_mount *const am,
+    const struct aio_done *const d)
+{
+    struct aio *aio = NULL;
+    const struct fs_mount *const m = &am->mount;
+    const struct fs *const fs = fs_from_type(am->type);
+    char *srcdup = NULL, *tgtdup = NULL;
+    struct mount *pm = NULL;
+    struct fs_mp mp;
+
+    if (!fs)
+    {
+        errno = ENODEV;
+        goto failure;
+    }
+    else if (!m->src && fs->flags & FS_DEV_REQUIRED)
+    {
+        errno = ENOTBLK;
+        goto failure;
+    }
+    else if (!fs_mp_from_path(m->tgt, &mp)
+        && m->src && !strcmp(mp.src, m->src))
+    {
+        errno = EBUSY;
+        goto failure;
+    }
+    else if ((m->src && !(srcdup = strdup(m->src)))
+        || !(tgtdup = strdup(m->tgt))
+        || !(pm = malloc(sizeof *pm))
+        || !(aio = malloc(sizeof *aio)))
+        goto failure;
+
+    const struct inode_search s =
+    {
+        .path = m->tgt,
+        .done = search_done,
+        .args = pm
+    };
+
+    *pm = (const struct mount)
+    {
+        .aio = aio,
+        .src = srcdup,
+        .tgt = tgtdup,
+        .fs = fs,
+        .mount =
+        {
+            .src = srcdup,
+            .tgt = tgtdup,
+            .mode = m->mode,
+            .gid = m->gid,
+            .uid = m->uid
+        }
+    };
+
+    *aio = (const struct aio)
+    {
+        .done =
+        {
+            .f = done,
+            .args = pm
+        }
+    };
+
+    if (inode_search(&s, &aio->r))
+        goto failure;
+
+    if (d)
+        pm->done = *d;
+
+    return aio;
+
+failure:
+    free(tgtdup);
+    free(srcdup);
+    free(pm);
+    free(aio);
+    return NULL;
+}
diff --git a/src/aio/src/open.c b/src/aio/src/open.c
index 89fbbba..f3a84da 100644
--- a/src/aio/src/open.c
+++ b/src/aio/src/open.c
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -16,18 +16,110 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+#include <aio.h>
+#include <fs/fs.h>
 #include <aio/types.h>
+#include <state.h>
+#include <errno.h>
 #include <stddef.h>
 #include <stdlib.h>
 
-struct aio *aio_open(const char *const path, const char *const mode)
+struct open
 {
-    struct aio *const ret = malloc(sizeof *ret);
+    struct aio *aio;
+    struct fs_open open;
+    struct aio_done done;
+};
 
-    if (!ret)
+static int done(const enum state s, void *const args)
+{
+    struct open *const o = args;
+
+    if (o->done.f)
+        o->done.f(s, o->done.args);
+
+    free(o);
+    return 0;
+}
+
+static enum state open_done(void *const args)
+{
+    return STATE_OK;
+}
+
+static int search_done(const enum state state, const char *const relpath,
+    const struct fs_mp *const mp, const union inode_result *const inode,
+    void *const args)
+{
+    struct open *const o = args;
+    struct aio *const aio = o->aio;
+    const struct fs *const fs = mp->fs;
+
+    if (!inode)
+    {
+        aio->error = ENOENT;
+        goto failure;
+    }
+
+    aio->r = (const struct fs_ret)
+    {
+        .f = open_done,
+        .args = o
+    };
+
+    if (fs->open(&o->open, mp, inode, &aio->r))
+    {
+        aio->error = errno;
+        goto failure;
+    }
+
+    return 0;
+
+failure:
+    aio->done = o->done;
+    return -1;
+}
+
+struct aio *aio_open(const struct fs_open *const op,
+    const struct aio_done *const d)
+{
+    struct aio *aio = NULL;
+    struct open *const o = malloc(sizeof *o);
+
+    if (!o || !(aio = malloc(sizeof *aio)))
         goto failure;
 
+    *o = (const struct open)
+    {
+        .aio = aio,
+        .open = *op
+    };
+
+    *aio = (const struct aio)
+    {
+        .done =
+        {
+            .f = done,
+            .args = o
+        }
+    };
+
+    const struct inode_search s =
+    {
+        .path = op->path,
+        .done = search_done,
+        .args = o
+    };
+
+    if (inode_search(&s, &aio->r))
+        goto failure;
+
+    if (d)
+        o->done = *d;
+
+    return aio;
+
 failure:
-    free(ret);
+    free(aio);
     return NULL;
 }
diff --git a/src/aio/src/poll.c b/src/aio/src/poll.c
new file mode 100644
index 0000000..615f2de
--- /dev/null
+++ b/src/aio/src/poll.c
@@ -0,0 +1,74 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <aio.h>
+#include <aio/types.h>
+#include <state.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <time.h>
+
+int aio_poll(struct aio_poll *const poll, int ms)
+{
+    struct timespec init;
+
+    if (ms > 0 && clock_gettime(CLOCK_REALTIME, &init))
+        return -1;
+
+    do
+    {
+        for (struct aio_poll *p = poll; p; p = p->next)
+        {
+            const struct aio *const aio = p->aio;
+            const struct fs_ret *const r = &aio->r;
+            const enum state s = r->f(r->args);
+
+            switch (s)
+            {
+                case STATE_AGAIN:
+                    break;
+
+                case STATE_FATAL:
+                    p->error = aio->error;
+                    /* Fall through */
+                case STATE_OK:
+                {
+                    const struct aio_done *const d = &aio->done;
+
+                    if (d->f)
+                        return d->f(s, d->args) ? -1 : 1;
+
+                    p->done = true;
+                    return 1;
+                }
+            }
+        }
+
+        if (ms > 0)
+        {
+            struct timespec after;
+
+            if (clock_gettime(CLOCK_REALTIME, &after))
+                return -1;
+
+            /* TODO */
+        }
+    } while (ms);
+
+    return 0;
+}
diff --git a/src/aio/src/stat.c b/src/aio/src/stat.c
new file mode 100644
index 0000000..9a7df76
--- /dev/null
+++ b/src/aio/src/stat.c
@@ -0,0 +1,118 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <aio.h>
+#include <aio/types.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct stat_prv
+{
+    struct fs_stat stat;
+    struct aio_done done;
+    struct aio *aio;
+};
+
+static int done(const enum state state, void *const args)
+{
+    int ret = 0;
+    struct stat_prv *const p = args;
+    const struct aio_done *const d = &p->done;
+
+    if (d->f)
+        ret = d->f(state, d->args);
+
+    free(p);
+    return ret;
+}
+
+static int search_done(const enum state s, const char *const relpath,
+    const struct fs_mp *const mp, const union inode_result *const inode,
+    void *const args)
+{
+    struct stat_prv *const p = args;
+    struct aio *const aio = p->aio;
+    const struct fs *const fs = mp->fs;
+
+    if (!inode)
+    {
+        aio->error = ENOENT;
+        goto failure;
+    }
+    else if (fs->stat(&p->stat, mp, inode, &aio->r))
+    {
+        aio->error = errno;
+        goto failure;
+    }
+
+    return 0;
+
+failure:
+    aio->done = p->done;
+    free(p);
+    return -1;
+}
+
+struct aio *aio_stat(const struct fs_stat *const as,
+    const struct aio_done *const d)
+{
+    struct aio *const aio = malloc(sizeof *aio);
+    struct stat_prv *const p = malloc(sizeof *p);
+
+    if (!p || !aio)
+        goto failure;
+
+    const struct inode_search s =
+    {
+        .path = as->path,
+        .done = search_done,
+        .args = p
+    };
+
+    *p = (const struct stat_prv)
+    {
+        .aio = aio,
+        .stat = *as
+    };
+
+    *aio = (const struct aio)
+    {
+        .done =
+        {
+            .f = done,
+            .args = p
+        }
+    };
+
+    if (inode_search(&s, &aio->r))
+        goto failure;
+
+    if (d)
+        p->done = *d;
+
+    return aio;
+
+failure:
+    free(p);
+    free(aio);
+    return NULL;
+}
diff --git a/src/aio/src/write.c b/src/aio/src/write.c
new file mode 100644
index 0000000..116629f
--- /dev/null
+++ b/src/aio/src/write.c
@@ -0,0 +1,79 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <aio.h>
+#include <fs/fs.h>
+#include <aio/types.h>
+#include <state.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+struct write
+{
+    struct aio *aio;
+    struct aio_done done;
+};
+
+static int done(const enum state s, void *const args)
+{
+    struct write *const w = args;
+
+    free(w);
+    return 0;
+}
+
+static enum state write_done(void *const args)
+{
+    return STATE_OK;
+}
+
+struct aio *aio_write(const struct fs_write *const fw,
+    const struct aio_done *const d)
+{
+    struct aio *aio = NULL;
+    struct write *const w = malloc(sizeof *w);
+    struct fs_fd *const fd = fw->fd;
+    const struct fs *const fs = fd->mp->fs;
+
+    if (!w || !(aio = malloc(sizeof *aio)))
+        goto failure;
+
+    *aio = (const struct aio)
+    {
+        .done =
+        {
+            .f = done,
+            .args = w
+        }
+    };
+
+    aio->r = (const struct fs_ret){.f = write_done};
+
+    if (fs->write(fw, &aio->r))
+        goto failure;
+
+    if (d)
+        w->done = *d;
+
+    return aio;
+
+failure:
+    free(w);
+    free(aio);
+    return NULL;
+}
diff --git a/src/drv/CMakeLists.txt b/src/drv/CMakeLists.txt
new file mode 100644
index 0000000..021d556
--- /dev/null
+++ b/src/drv/CMakeLists.txt
@@ -0,0 +1,28 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv)
+add_subdirectory(event)
+add_subdirectory(tty)
+add_subdirectory(src)
+target_include_directories(drv PUBLIC include PRIVATE private_include)
+target_link_libraries(drv PUBLIC drv_event PRIVATE drv_tty)
+
+if(PS1_BUILD)
+    add_subdirectory(ps1)
+    target_compile_definitions(drv PRIVATE DRV_PS1)
+    target_link_libraries(drv PUBLIC drv_ps1_time PRIVATE drv_ps1)
+endif()
diff --git a/src/drv/event/CMakeLists.txt b/src/drv/event/CMakeLists.txt
new file mode 100644
index 0000000..e020f0e
--- /dev/null
+++ b/src/drv/event/CMakeLists.txt
@@ -0,0 +1,18 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_event INTERFACE)
+target_include_directories(drv_event INTERFACE include)
diff --git a/src/drv/event/include/drv/event.h b/src/drv/event/include/drv/event.h
new file mode 100644
index 0000000..f5ee12c
--- /dev/null
+++ b/src/drv/event/include/drv/event.h
@@ -0,0 +1,48 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_EVENT_H
+#define DRV_EVENT_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+struct drv_event_done
+{
+    int (*f)(int error, void *args);
+    void *args;
+};
+
+struct drv_event_ops
+{
+    int (*read)(void *buf, size_t n, const struct drv_event_done *done,
+        void *args);
+    int (*write)(const void *buf, size_t n, const struct drv_event_done *done,
+        void *args);
+    int (*seek)(long offset, const struct drv_event_done *done, void *args);
+    void *args;
+};
+
+struct drv_event
+{
+    int (*status)(const char *node, const struct drv_event_ops *ops,
+        bool available, void *args);
+    void *args;
+};
+
+#endif
diff --git a/src/drv/include/drv/drv.h b/src/drv/include/drv/drv.h
new file mode 100644
index 0000000..6c7b57e
--- /dev/null
+++ b/src/drv/include/drv/drv.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_H
+#define DRV_H
+
+#include <drv/event.h>
+
+struct drv *drv_init(const struct drv_event *ev);
+int drv_update(struct drv *d);
+void drv_free(struct drv *d);
+
+#endif
diff --git a/src/drv/include/drv/time.h b/src/drv/include/drv/time.h
new file mode 100644
index 0000000..ac721a4
--- /dev/null
+++ b/src/drv/include/drv/time.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_TIME_H
+#define DRV_TIME_H
+
+#include <time.h>
+
+int drv_time_getres(clockid_t id, struct timespec *ts);
+int drv_time_gettime(clockid_t id, struct timespec *ts);
+int drv_time_settime(clockid_t id, const struct timespec *ts);
+
+#endif
diff --git a/src/drv/private_include/drv/port.h b/src/drv/private_include/drv/port.h
new file mode 100644
index 0000000..fde2a4b
--- /dev/null
+++ b/src/drv/private_include/drv/port.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PORT_H
+#define DRV_PORT_H
+
+struct drv_port;
+
+#ifdef DRV_PS1
+#include <drv/ps1.h>
+#endif
+
+#endif
diff --git a/src/drv/private_include/drv/tree.h b/src/drv/private_include/drv/tree.h
new file mode 100644
index 0000000..4dd21a6
--- /dev/null
+++ b/src/drv/private_include/drv/tree.h
@@ -0,0 +1,31 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_TREE_H
+#define DRV_TREE_H
+
+#include <drv/drv.h>
+#include <drv/port.h>
+#include <stddef.h>
+
+extern struct drv_port *(*const drv_tree_init[])(const struct drv_event *);
+extern int (*const drv_tree_update[])(struct drv_port *);
+extern void (*const drv_tree_free[])(struct drv_port *);
+extern const size_t drv_tree_n;
+
+#endif
diff --git a/src/drv/private_include/drv/types.h b/src/drv/private_include/drv/types.h
new file mode 100644
index 0000000..a3a51f2
--- /dev/null
+++ b/src/drv/private_include/drv/types.h
@@ -0,0 +1,30 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_TYPES_H
+#define DRV_TYPES_H
+
+#include <stddef.h>
+
+struct drv
+{
+    struct drv_port **ports;
+    size_t n;
+};
+
+#endif
diff --git a/src/drv/ps1/CMakeLists.txt b/src/drv/ps1/CMakeLists.txt
new file mode 100644
index 0000000..9e408de
--- /dev/null
+++ b/src/drv/ps1/CMakeLists.txt
@@ -0,0 +1,33 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_subdirectory(bios)
+add_subdirectory(cd)
+add_subdirectory(dma)
+add_subdirectory(gpu)
+add_subdirectory(interrupt)
+add_subdirectory(mc)
+add_subdirectory(pad)
+add_subdirectory(rcnt)
+add_subdirectory(time)
+add_library(drv_ps1)
+add_subdirectory(src)
+target_include_directories(drv_ps1 PUBLIC include PRIVATE private_include)
+target_link_libraries(drv_ps1 PUBLIC c drv_event PRIVATE
+    drv_ps1_cd
+    drv_ps1_mc
+    drv_ps1_pad
+)
diff --git a/src/drv/ps1/bios/CMakeLists.txt b/src/drv/ps1/bios/CMakeLists.txt
new file mode 100644
index 0000000..255a27d
--- /dev/null
+++ b/src/drv/ps1/bios/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_bios)
+add_subdirectory(src)
+target_include_directories(drv_ps1_bios INTERFACE include)
diff --git a/src/drv/ps1/bios/include/drv/ps1/bios.h b/src/drv/ps1/bios/include/drv/ps1/bios.h
new file mode 100644
index 0000000..2686f12
--- /dev/null
+++ b/src/drv/ps1/bios/include/drv/ps1/bios.h
@@ -0,0 +1,112 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef PS1_BIOS_H
+#define PS1_BIOS_H
+
+#include <stdint.h>
+
+enum
+{
+    CLASS_IRQ0 = (long)0xf0000001,
+    CLASS_GPU,
+    CLASS_CDROM,
+    CLASS_DMA,
+    CLASS_RTC0  = (long)0xf2000000,
+    CLASS_RTC1,
+    CLASS_RTC2,
+    CLASS_VBLANK,
+    CLASS_CONTROLLER = (long)0xf0000008,
+    CLASS_SPU,
+    CLASS_PIO,
+    CLASS_SIO
+};
+
+enum
+{
+    MODE_EXECUTE = 0x1000,
+    MODE_READY = 0x2000
+};
+
+enum
+{
+    SPEC_COUNTER_ZERO = 1,
+    SPEC_INTERRUPTED = 1 << 1,
+    SPEC_EOF = 1 << 2,
+    SPEC_FILE_CLOSED = 1 << 3,
+    SPEC_COMMAND_ACK = 1 << 4,
+    SPEC_COMMAND_COMPLETE = 1 << 5,
+    SPEC_DATA_READY = 1 << 6,
+    SPEC_DATA_END = 1 << 7,
+    SPEC_TIMEOUT = 1 << 8,
+    SPEC_UNKNOWN_CMD = 1 << 9,
+    SPEC_END_READ_BUF = 1 << 10,
+    SPEC_END_WRITE_BUF = 1 << 11,
+    SPEC_GENERAL_INTERRUPT = 1 << 12,
+    SPEC_NEW_DEVICE = 1 << 13,
+    SPEC_SYSCALL = 1 << 14,
+    SPEC_ERROR = 1 << 15,
+    SPEC_WRITE_ERROR,
+    SPEC_DOMAIN_ERROR = 0x301,
+    SPEC_RANGE_RNG
+};
+
+struct CdAsyncSeekL
+{
+    uint8_t minutes, seconds, frames;
+};
+
+union SetMode
+{
+    struct
+    {
+        uint8_t cdda :1, autopause :1, report :1, xa_filter :1, ignore :1,
+            whole_sector :1, xa_adpcm :1, speed :1;
+    } bits;
+
+    uint8_t mask;
+};
+
+struct CdAsyncReadSector_mode
+{
+    union SetMode mode;
+    union
+    {
+        struct
+        {
+            uint8_t reads :1, :7;
+        } bits;
+    } read;
+
+    uint16_t reserved;
+};
+
+void EnterCriticalSection(void);
+void ExitCriticalSection(void);
+int OpenEvent(int class, int spec, int mode, int (*f)(void));
+int EnableEvent(int event);
+int DisableEvent(int event);
+int CloseEvent(int event);
+int TestEvent(int event);
+int WaitEvent(int event);
+int CdAsyncGetStatus(uint8_t *response);
+int CdAsyncReadSector(unsigned count, void *dst,
+    struct CdAsyncReadSector_mode mode);
+int CdAsyncSeekL(const struct CdAsyncSeekL *seekl);
+
+#endif
diff --git a/src/drv/ps1/bios/src/CMakeLists.txt b/src/drv/ps1/bios/src/CMakeLists.txt
new file mode 100644
index 0000000..b1ea9cd
--- /dev/null
+++ b/src/drv/ps1/bios/src/CMakeLists.txt
@@ -0,0 +1,29 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1_bios PRIVATE
+    CdAsyncGetStatus.s
+    CdAsyncReadSector.s
+    CdAsyncSeekL.s
+    CloseEvent.s
+    DisableEvent.s
+    EnableEvent.s
+    EnterCriticalSection.s
+    ExitCriticalSection.s
+    OpenEvent.s
+    TestEvent.s
+    WaitEvent.s
+)
diff --git a/src/drv/ps1/bios/src/CdAsyncGetStatus.s b/src/drv/ps1/bios/src/CdAsyncGetStatus.s
new file mode 100644
index 0000000..77464ea
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdAsyncGetStatus.s
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdAsyncGetStatus
+
+CdAsyncGetStatus:
+    li $9, 0x7c
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CdAsyncReadSector.s b/src/drv/ps1/bios/src/CdAsyncReadSector.s
new file mode 100644
index 0000000..c68b54a
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdAsyncReadSector.s
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdAsyncReadSector
+
+CdAsyncReadSector:
+    li $9, 0x7e
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CdAsyncSeekL.s b/src/drv/ps1/bios/src/CdAsyncSeekL.s
new file mode 100644
index 0000000..cc20a32
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdAsyncSeekL.s
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdAsyncSeekL
+
+CdAsyncSeekL:
+    li $9, 0x78
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CloseEvent.s b/src/drv/ps1/bios/src/CloseEvent.s
new file mode 100644
index 0000000..0ade6fa
--- /dev/null
+++ b/src/drv/ps1/bios/src/CloseEvent.s
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CloseEvent
+
+CloseEvent:
+    li $9, 0x9
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/DisableEvent.s b/src/drv/ps1/bios/src/DisableEvent.s
new file mode 100644
index 0000000..b2d96ca
--- /dev/null
+++ b/src/drv/ps1/bios/src/DisableEvent.s
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global DisableEvent
+
+DisableEvent:
+    li $9, 0xd
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/EnableEvent.s b/src/drv/ps1/bios/src/EnableEvent.s
new file mode 100644
index 0000000..bbff315
--- /dev/null
+++ b/src/drv/ps1/bios/src/EnableEvent.s
@@ -0,0 +1,23 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global EnableEvent
+
+EnableEvent:
+    li $9, 0xc
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/EnterCriticalSection.s b/src/drv/ps1/bios/src/EnterCriticalSection.s
new file mode 100644
index 0000000..ebf2de9
--- /dev/null
+++ b/src/drv/ps1/bios/src/EnterCriticalSection.s
@@ -0,0 +1,25 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global EnterCriticalSection
+
+EnterCriticalSection:
+    li $a0, 1
+    syscall
+    nop
+    jr $ra
+    nop
diff --git a/src/drv/ps1/bios/src/ExitCriticalSection.s b/src/drv/ps1/bios/src/ExitCriticalSection.s
new file mode 100644
index 0000000..53f307a
--- /dev/null
+++ b/src/drv/ps1/bios/src/ExitCriticalSection.s
@@ -0,0 +1,23 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global ExitCriticalSection
+
+ExitCriticalSection:
+    li $a0, 2
+    syscall
+    nop
+    jr $ra
+    nop
diff --git a/src/drv/ps1/bios/src/OpenEvent.s b/src/drv/ps1/bios/src/OpenEvent.s
new file mode 100644
index 0000000..89cc7d4
--- /dev/null
+++ b/src/drv/ps1/bios/src/OpenEvent.s
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global OpenEvent
+
+OpenEvent:
+    li $9, 0x8
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/TestEvent.s b/src/drv/ps1/bios/src/TestEvent.s
new file mode 100644
index 0000000..4afe273
--- /dev/null
+++ b/src/drv/ps1/bios/src/TestEvent.s
@@ -0,0 +1,23 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global TestEvent
+
+TestEvent:
+    li $9, 0xb
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/WaitEvent.s b/src/drv/ps1/bios/src/WaitEvent.s
new file mode 100644
index 0000000..1f2ca97
--- /dev/null
+++ b/src/drv/ps1/bios/src/WaitEvent.s
@@ -0,0 +1,23 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global WaitEvent
+
+WaitEvent:
+    li $9, 0xa
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/cd/CMakeLists.txt b/src/drv/ps1/cd/CMakeLists.txt
new file mode 100644
index 0000000..7459bc6
--- /dev/null
+++ b/src/drv/ps1/cd/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_cd)
+add_subdirectory(src)
+target_include_directories(drv_ps1_cd PUBLIC include PRIVATE private_include)
+target_link_libraries(drv_ps1_cd PUBLIC c drv_event PRIVATE drv_ps1_bios)
diff --git a/src/drv/ps1/cd/include/drv/ps1/cd.h b/src/drv/ps1/cd/include/drv/ps1/cd.h
new file mode 100644
index 0000000..6bb48f1
--- /dev/null
+++ b/src/drv/ps1/cd/include/drv/ps1/cd.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_CD_H
+#define DRV_PS1_CD_H
+
+#include <drv/event.h>
+
+struct drv_ps1_cd *drv_ps1_cd_init(const struct drv_event *ev);
+int drv_ps1_cd_update(struct drv_ps1_cd *cd);
+void drv_ps1_cd_free(struct drv_ps1_cd *cd);
+
+#endif
diff --git a/src/drv/ps1/cd/private_include/drv/ps1/cd/regs.h b/src/drv/ps1/cd/private_include/drv/ps1/cd/regs.h
new file mode 100644
index 0000000..7d15f39
--- /dev/null
+++ b/src/drv/ps1/cd/private_include/drv/ps1/cd/regs.h
@@ -0,0 +1,66 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_CD_REGS_H
+#define DRV_PS1_CD_REGS_H
+
+#include <stdint.h>
+
+struct cd_reg_status
+{
+    uint8_t index :2;
+    const uint8_t ADPBUSY :1, PRMEMPT :1, PRMWRDY :1, RSLRRDY :1, DRQSTS :1,
+        BUSYSTS :1;
+};
+
+struct cd_reg_cmd
+{
+    uint8_t cmd;
+};
+
+struct cd_reg_rsp
+{
+    uint8_t rsp;
+};
+
+struct cd_reg_param
+{
+    uint8_t param;
+};
+
+union cd_reg_if
+{
+    const struct
+    {
+        uint8_t response :3, :1, cmd_start :1, :3;
+    } r;
+
+    struct
+    {
+        uint8_t ack: 5, :1, CLRPRM :1, :1;
+    } w;
+};
+
+#define CD_REG(x) (0x1f801800 + (x))
+#define CD_REG_STATUS ((volatile struct cd_reg_status *)CD_REG(0))
+#define CD_REG_CMD ((volatile struct cd_reg_cmd *)CD_REG(1))
+#define CD_REG_RSP ((const volatile struct cd_reg_rsp *)CD_REG(1))
+#define CD_REG_PARAM ((volatile struct cd_reg_param *)CD_REG(2))
+#define CD_REG_IF ((volatile union cd_reg_if *)CD_REG(3))
+
+#endif
diff --git a/src/drv/ps1/cd/private_include/drv/ps1/cd/routines.h b/src/drv/ps1/cd/private_include/drv/ps1/cd/routines.h
new file mode 100644
index 0000000..0fce7dd
--- /dev/null
+++ b/src/drv/ps1/cd/private_include/drv/ps1/cd/routines.h
@@ -0,0 +1,37 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_CD_ROUTINES_H
+#define DRV_PS1_CD_ROUTINES_H
+
+#include <drv/ps1/cd/types.h>
+#include <drv/ps1/bios.h>
+#include <stddef.h>
+
+int drv_ps1_cd_send(const struct cmd *cmd);
+int drv_ps1_cd_getstat(void);
+int drv_ps1_cd_read(void *buf, size_t n, const struct drv_event_done *done,
+    void *args);
+int drv_ps1_cd_seek(long offset, const struct drv_event_done *done,
+    void *args);
+int drv_ps1_cd_write(const void *buf, size_t n,
+    const struct drv_event_done *done, void *args);
+int drv_ps1_cd_next(void);
+struct CdAsyncSeekL drv_ps1_cd_toseekl(unsigned i);
+
+#endif
diff --git a/src/drv/ps1/cd/private_include/drv/ps1/cd/types.h b/src/drv/ps1/cd/private_include/drv/ps1/cd/types.h
new file mode 100644
index 0000000..4446305
--- /dev/null
+++ b/src/drv/ps1/cd/private_include/drv/ps1/cd/types.h
@@ -0,0 +1,122 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_CD_TYPES_H
+#define DRV_PS1_CD_TYPES_H
+
+#include <drv/event.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+struct drv_ps1_cd
+{
+    bool available;
+    struct drv_event ev;
+};
+
+struct cmd
+{
+    enum
+    {
+        CMD_SYNC,
+        CMD_GETSTAT,
+        CMD_SETLOC,
+    } cmd;
+
+    union cmd_param
+    {
+        struct cmd_setloc
+        {
+            uint8_t min, sec, sect;
+        } setloc;
+    } params;
+};
+
+struct cd_prv_getstat
+{
+    int event;
+
+    union
+    {
+        struct
+        {
+            uint8_t invalid :1, motor :1, seek_error :1, id_error :1,
+                shell_open :1, reading :1, seeking :1, playing_cdda :1;
+        } bits;
+
+        uint8_t byte;
+    } status;
+};
+
+struct cd_prv_read
+{
+    int event, endevent, errevent;
+};
+
+struct cd_prv_seek
+{
+    int event, errevent;
+};
+
+struct cd_req_read
+{
+    void *buf;
+    size_t n;
+};
+
+struct cd_req_seek
+{
+    long offset;
+};
+
+struct cd_req
+{
+    union
+    {
+        struct cd_req_read read;
+        struct cd_req_seek seek;
+    } u;
+
+    int (*f)(void);
+    struct drv_event_done done;
+    struct cd_req *next;
+};
+
+enum {CD_SECTOR_SZ = 2048};
+
+struct cd_prv
+{
+    bool available, has_cache;
+    int (*next)(void);
+    struct cmd cmd;
+    struct cd_req *head, *tail;
+    char sector[CD_SECTOR_SZ];
+    unsigned offset;
+
+    union
+    {
+        struct cd_prv_getstat getstat;
+        struct cd_prv_read read;
+        struct cd_prv_seek seek;
+    } u;
+};
+
+extern struct cd_prv drv_ps1_cd_prv;
+
+#endif
diff --git a/src/drv/ps1/cd/src/CMakeLists.txt b/src/drv/ps1/cd/src/CMakeLists.txt
new file mode 100644
index 0000000..074671d
--- /dev/null
+++ b/src/drv/ps1/cd/src/CMakeLists.txt
@@ -0,0 +1,29 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1_cd PRIVATE
+    free.c
+    getstat.c
+    init.c
+    next.c
+    prv.c
+    # send.c
+    read.c
+    seek.c
+    toseekl.c
+    update.c
+    write.c
+)
diff --git a/src/drv/ps1/cd/src/ensure_event.c b/src/drv/ps1/cd/src/ensure_event.c
new file mode 100644
index 0000000..5e2f3a0
--- /dev/null
+++ b/src/drv/ps1/cd/src/ensure_event.c
@@ -0,0 +1,40 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/bios.h>
+#include <drv/ps1/cd/types.h>
+#include <stddef.h>
+
+int drv_ps1_cd_ensure_event(struct cd_prv *const p)
+{
+    if (p->event)
+        return 0;
+
+    EnterCriticalSection();
+
+    const int event = OpenEvent(CLASS_CDROM, SPEC_COMMAND_COMPLETE, MODE_READY,
+        NULL);
+
+    ExitCriticalSection();
+
+    if (event == -1)
+        return -1;
+
+    EnableEvent(p->event = event);
+    return 0;
+}
diff --git a/src/drv/ps1/cd/src/free.c b/src/drv/ps1/cd/src/free.c
new file mode 100644
index 0000000..44704d7
--- /dev/null
+++ b/src/drv/ps1/cd/src/free.c
@@ -0,0 +1,23 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+
+void drv_ps1_cd_free(struct drv_ps1_cd *const cd)
+{
+}
diff --git a/src/drv/ps1/cd/src/getstat.c b/src/drv/ps1/cd/src/getstat.c
new file mode 100644
index 0000000..6268f37
--- /dev/null
+++ b/src/drv/ps1/cd/src/getstat.c
@@ -0,0 +1,65 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/bios.h>
+
+static int wait_event(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    struct cd_prv_getstat *const g = &p->u.getstat;
+
+    if (TestEvent(g->event))
+    {
+        p->available = !g->status.bits.shell_open;
+        DisableEvent(g->event);
+        CloseEvent(g->event);
+
+        if (!p->head)
+            return drv_ps1_cd_getstat();
+
+        return p->head->f();
+    }
+
+    return 0;
+}
+
+int drv_ps1_cd_getstat(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    struct cd_prv_getstat *const g = &p->u.getstat;
+
+    EnterCriticalSection();
+
+    const int event = OpenEvent(CLASS_CDROM, SPEC_COMMAND_COMPLETE,
+        MODE_READY, NULL);
+
+    ExitCriticalSection();
+
+    if (event == -1)
+        return -1;
+
+    *g = (const struct cd_prv_getstat){.event = event};
+    EnableEvent(event);
+
+    if (!CdAsyncGetStatus(&g->status.byte))
+        return -1;
+
+    p->next = wait_event;
+    return 0;
+}
diff --git a/src/drv/ps1/cd/src/init.c b/src/drv/ps1/cd/src/init.c
new file mode 100644
index 0000000..896e330
--- /dev/null
+++ b/src/drv/ps1/cd/src/init.c
@@ -0,0 +1,42 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/cd/types.h>
+#include <drv/event.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+struct drv_ps1_cd *drv_ps1_cd_init(const struct drv_event *const ev)
+{
+    struct drv_ps1_cd *const ret = malloc(sizeof *ret);
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+
+    if (!ret)
+        return NULL;
+    else if (!p->next && drv_ps1_cd_getstat())
+        goto failure;
+
+    *ret = (const struct drv_ps1_cd){.ev = *ev};
+    return ret;
+
+failure:
+    free(ret);
+    return NULL;
+}
diff --git a/src/drv/ps1/cd/src/next.c b/src/drv/ps1/cd/src/next.c
new file mode 100644
index 0000000..0923be9
--- /dev/null
+++ b/src/drv/ps1/cd/src/next.c
@@ -0,0 +1,38 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/cd/types.h>
+#include <stdlib.h>
+
+int drv_ps1_cd_next(void)
+{
+    int ret = 0;
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    struct cd_req *const next = p->head->next;
+
+    free(p->head);
+
+    if (next && (ret = next->f()))
+        return -1;
+    else if (!(p->head = next))
+        return drv_ps1_cd_getstat();
+
+    return ret;
+}
diff --git a/src/drv/ps1/cd/src/prv.c b/src/drv/ps1/cd/src/prv.c
new file mode 100644
index 0000000..dd70709
--- /dev/null
+++ b/src/drv/ps1/cd/src/prv.c
@@ -0,0 +1,22 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/cd/types.h>
+
+struct cd_prv drv_ps1_cd_prv;
diff --git a/src/drv/ps1/cd/src/read.c b/src/drv/ps1/cd/src/read.c
new file mode 100644
index 0000000..251481e
--- /dev/null
+++ b/src/drv/ps1/cd/src/read.c
@@ -0,0 +1,155 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/cd/types.h>
+#include <drv/event.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int deliver_event(struct cd_prv *const p, const int error)
+{
+    const struct cd_prv_read *const read = &p->u.read;
+    const struct cd_req *const req = p->head;
+    const struct drv_event_done *const d = &req->done;
+
+    if (!error)
+    {
+        const struct cd_req_read *const rr = &req->u.read;
+        const long offset = p->offset % CD_SECTOR_SZ;
+
+        memcpy(rr->buf, p->sector + offset, rr->n);
+        p->has_cache = true;
+        p->offset += rr->n;
+    }
+
+    if (d->f(error, d->args) || drv_ps1_cd_next())
+        return -1;
+
+    return 0;
+}
+
+static int wait_event(void)
+{
+    int ret = 0;
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    const struct cd_prv_read *const read = &p->u.read;
+
+    if (TestEvent(read->event))
+        return deliver_event(p, SUCCESS);
+    else if (TestEvent(read->errevent) || TestEvent(read->endevent))
+        return deliver_event(p, EIO);
+
+    return 0;
+}
+
+static int start_read(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    struct cd_prv_read *const r = &p->u.read;
+    const struct cd_req_read *req = &p->head->u.read;
+    const struct CdAsyncReadSector_mode mode =
+    {
+        .mode.bits.speed = 1,
+    };
+
+    EnterCriticalSection();
+
+    const int
+        event = OpenEvent(CLASS_CDROM, SPEC_COMMAND_COMPLETE, MODE_READY, NULL),
+        endevent = OpenEvent(CLASS_CDROM, SPEC_DATA_END, MODE_READY, NULL),
+        errevent = OpenEvent(CLASS_CDROM, SPEC_ERROR, MODE_READY, NULL);
+
+    ExitCriticalSection();
+
+    if (event == -1 || endevent == -1 || errevent == -1)
+        goto failure;
+
+    *r = (const struct cd_prv_read)
+    {
+        .event = event,
+        .endevent = endevent,
+        .errevent = errevent
+    };
+
+    EnableEvent(event);
+    EnableEvent(endevent);
+    EnableEvent(errevent);
+
+    if (!CdAsyncReadSector(1, p->sector, mode))
+        goto failure;
+
+    p->next = wait_event;
+    return 0;
+
+failure:
+    if (event != -1)
+        CloseEvent(event);
+
+    if (endevent != -1)
+        CloseEvent(endevent);
+
+    if (errevent != -1)
+        CloseEvent(errevent);
+
+    return -1;
+}
+
+static int read_cache(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    const struct cd_req *const req = p->head;
+    const struct cd_req_read *const rr = &req->u.read;
+    const long offset = p->offset % CD_SECTOR_SZ;
+
+    memcpy(rr->buf, p->sector + offset, rr->n);
+    p->offset += rr->n;
+    return deliver_event(p, SUCCESS);
+}
+
+int drv_ps1_cd_read(void *const buf, const size_t n,
+    const struct drv_event_done *const done, void *const args)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    struct cd_req *const r = malloc(sizeof *r);
+
+    if (!r)
+        return -1;
+
+    *r = (const struct cd_req)
+    {
+        .done = *done,
+        /* TODO: multi-sector reads, make sure cache can really be used */
+        .f = p->has_cache ? read_cache : start_read,
+        .u.read =
+        {
+            .buf = buf,
+            .n = n
+        }
+    };
+
+    if (!p->head)
+        p->head = r;
+    else
+        p->tail->next = r;
+
+    p->tail = r;
+    return 0;
+}
diff --git a/src/drv/ps1/cd/src/seek.c b/src/drv/ps1/cd/src/seek.c
new file mode 100644
index 0000000..e26a684
--- /dev/null
+++ b/src/drv/ps1/cd/src/seek.c
@@ -0,0 +1,118 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/cd/types.h>
+#include <drv/ps1/bios.h>
+#include <drv/event.h>
+#include <errno.h>
+#include <stdlib.h>
+
+static int wait_event(void)
+{
+    int ret = 0;
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    const struct cd_prv_seek *const s = &p->u.seek;
+    const struct cd_req *const r = p->head;
+    const struct drv_event_done *const d = &r->done;
+
+    if (TestEvent(s->event))
+    {
+        p->offset = r->u.seek.offset;
+
+        if (d->f(0, d->args) || drv_ps1_cd_next())
+            return -1;
+    }
+    else if (TestEvent(s->errevent))
+    {
+        if (d->f(EIO, d->args) || drv_ps1_cd_next())
+            return -1;
+    }
+
+    return 0;
+}
+
+static int seek(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    struct cd_prv_seek *const s = &p->u.seek;
+    const struct cd_req_seek *req = &p->head->u.seek;
+    const unsigned sector = req->offset / CD_SECTOR_SZ;
+    const struct CdAsyncSeekL seekl = drv_ps1_cd_toseekl(sector);
+
+    EnterCriticalSection();
+
+    const int
+        event = OpenEvent(CLASS_CDROM, SPEC_COMMAND_COMPLETE, MODE_READY, NULL),
+        errevent = OpenEvent(CLASS_CDROM, SPEC_ERROR, MODE_READY, NULL);
+
+    ExitCriticalSection();
+
+    if (event == -1 || errevent == -1)
+        goto failure;
+
+    *s = (const struct cd_prv_seek)
+    {
+        .event = event,
+        .errevent = errevent
+    };
+
+    EnableEvent(event);
+    EnableEvent(errevent);
+
+    if (!CdAsyncSeekL(&seekl))
+        goto failure;
+
+    p->next = wait_event;
+    return 0;
+
+failure:
+    if (event != -1)
+        CloseEvent(event);
+
+    if (errevent != -1)
+        CloseEvent(errevent);
+
+    return -1;
+}
+
+int drv_ps1_cd_seek(const long offset, const struct drv_event_done *const done,
+    void *const args)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+    struct cd_req *const r = malloc(sizeof *r);
+
+    if (!r)
+        return -1;
+
+    *r = (const struct cd_req)
+    {
+        .done = *done,
+        .u.seek = offset,
+        .f = seek
+    };
+
+    if (!p->head)
+        p->head = r;
+    else
+        p->tail->next = r;
+
+    p->tail = r;
+    return 0;
+}
diff --git a/src/drv/ps1/cd/src/send.c b/src/drv/ps1/cd/src/send.c
new file mode 100644
index 0000000..76b9730
--- /dev/null
+++ b/src/drv/ps1/cd/src/send.c
@@ -0,0 +1,100 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/bios.h>
+#include <drv/ps1/cd/regs.h>
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/cd/types.h>
+#include <stdint.h>
+
+static int wait_event(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+
+    if (TestEvent(p->event))
+    {
+        const union cd_prv_getstat g = {.status = CD_REG_RSP->rsp};
+
+        p->available = !g.bits.shell_open;
+    }
+
+    return 0;
+}
+
+static void send_params(const struct cd_prv *const p)
+{
+    static const size_t n[] =
+    {
+        [CMD_SETLOC] = sizeof (struct cmd_setloc)
+    };
+
+    const uint8_t cmd = p->cmd.cmd, index = CD_REG_STATUS->index;
+
+    if (cmd < sizeof n / sizeof *n)
+    {
+        const void *const vbuf = &p->cmd.params;
+        const uint8_t *buf = vbuf;
+
+        CD_REG_STATUS->index = 0;
+
+        for (size_t i = 0; i < n[cmd]; i++)
+            CD_REG_PARAM->param = *buf++;
+
+        CD_REG_STATUS->index = index;
+    }
+}
+
+static int send_data(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+
+    if (CD_REG_STATUS->BUSYSTS)
+        return 0;
+
+    send_params(p);
+    CD_REG_CMD->cmd = p->cmd.cmd;
+    p->next = wait_event;
+    return 0;
+}
+
+static int reset_param_fifo(void)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+
+    if (CD_REG_STATUS->BUSYSTS)
+        return 0;
+
+    CD_REG_IF->w.ack = 0x1f;
+    CD_REG_STATUS->index = 1;
+    CD_REG_IF->w.CLRPRM = 1;
+    p->next = send_data;
+    return 0;
+}
+
+int drv_ps1_cd_send(const struct cmd *const cmd)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+
+    if (drv_ps1_cd_ensure_event(p))
+        return -1;
+
+    p->cmd = *cmd;
+    p->next = reset_param_fifo;
+    return 0;
+}
diff --git a/src/drv/ps1/cd/src/toseekl.c b/src/drv/ps1/cd/src/toseekl.c
new file mode 100644
index 0000000..df35ff1
--- /dev/null
+++ b/src/drv/ps1/cd/src/toseekl.c
@@ -0,0 +1,54 @@
+/* Original functions from psn00bsdk, commit 5d9aa2d3
+ *
+ * itob extracted from libpsn00b/include/psxcd.h
+ * CdIntToPos (here renamed to drv_ps1_cd_toseekl) extracted from
+ * libpsn00b/psxcd/misc.c
+ *
+ * Original copyright notice:
+ *
+ * PSn00bSDK CD-ROM library
+ * (C) 2020-2023 Lameguy64, spicyjpeg - MPL licensed
+ */
+
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/bios.h>
+
+/**
+ * @brief Translates a decimal value to BCD.
+ *
+ * @details Translates a decimal integer in 0-99 range into a BCD format value.
+ */
+static int itob(const int i)
+{
+    return (i / 10 * 16) | (i % 10);
+}
+
+struct CdAsyncSeekL drv_ps1_cd_toseekl(unsigned i)
+{
+	i += 150;
+
+    return (const struct CdAsyncSeekL)
+    {
+        .minutes = itob(i / (75 * 60)),
+        .seconds = itob((i / 75) % 60),
+        .frames = itob(i % 75)
+    };
+}
diff --git a/src/drv/ps1/cd/src/update.c b/src/drv/ps1/cd/src/update.c
new file mode 100644
index 0000000..2c3d2ff
--- /dev/null
+++ b/src/drv/ps1/cd/src/update.c
@@ -0,0 +1,46 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/cd/types.h>
+#include <drv/ps1/cd/routines.h>
+#include <drv/event.h>
+#include <stdbool.h>
+
+int drv_ps1_cd_update(struct drv_ps1_cd *const cd)
+{
+    struct cd_prv *const p = &drv_ps1_cd_prv;
+
+    if (p->next())
+        return -1;
+    else if (p->available ^ cd->available)
+    {
+        const struct drv_event *const ev = &cd->ev;
+        static const struct drv_event_ops ops =
+        {
+            .read = drv_ps1_cd_read,
+            .write = drv_ps1_cd_write,
+            .seek = drv_ps1_cd_seek
+        };
+
+        ev->status("cd0", &ops, p->available, ev->args);
+        cd->available = p->available;
+    }
+
+    return 0;
+}
diff --git a/src/drv/ps1/cd/src/write.c b/src/drv/ps1/cd/src/write.c
new file mode 100644
index 0000000..008a13d
--- /dev/null
+++ b/src/drv/ps1/cd/src/write.c
@@ -0,0 +1,31 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/cd/routines.h>
+#include <drv/ps1/cd/types.h>
+#include <drv/event.h>
+#include <errno.h>
+
+int drv_ps1_cd_write(const void *const buf, const size_t n,
+    const struct drv_event_done *const done, void *const args)
+{
+    /* TODO: write event callback returning EROFS */
+    errno = EROFS;
+    return -1;
+}
diff --git a/src/drv/ps1/dma/CMakeLists.txt b/src/drv/ps1/dma/CMakeLists.txt
new file mode 100644
index 0000000..689beed
--- /dev/null
+++ b/src/drv/ps1/dma/CMakeLists.txt
@@ -0,0 +1,18 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_dma INTERFACE)
+target_include_directories(drv_ps1_dma INTERFACE include)
diff --git a/src/drv/ps1/dma/include/drv/ps1/dma.h b/src/drv/ps1/dma/include/drv/ps1/dma.h
new file mode 100644
index 0000000..8ae1826
--- /dev/null
+++ b/src/drv/ps1/dma/include/drv/ps1/dma.h
@@ -0,0 +1,97 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_DMA_H
+#define DRV_PS1_DMA_H
+
+#include <stdint.h>
+
+union dpcr
+{
+    struct
+    {
+        uint32_t mdecin_prio :3, mdecin_en :1, mdecout_prio :3, mdecout_en :1,
+            gpu_prio :3, gpu_en :1, cdrom_prio :3, cdrom_en :1, spu_prio :3,
+            spu_en :1, pio_prio :3, pio_en :1, otc_prio :3, otc_en :1, :4;
+    } bits;
+
+    uint32_t mask;
+};
+
+union madr
+{
+    struct
+    {
+        uint32_t addr :24, :8;
+    } bits;
+
+    uint32_t mask;
+};
+
+union bcr
+{
+    struct
+    {
+        uint16_t nwords, reserved;
+    } syncmode_0;
+
+    struct
+    {
+        uint16_t blocksz, nblocks;
+    } syncmode_1;
+
+    struct
+    {
+        uint32_t reserved;
+    } syncmode_2;
+
+    uint32_t mask;
+};
+
+enum
+{
+    CHCR_DIR_TO_RAM,
+    CHCR_DIR_FROM_RAM
+};
+
+enum
+{
+    CHCR_SYNC_MODE_ALL,
+    CHCR_SYNC_MODE_BLOCKS,
+    CHCR_SYNC_MODE_LINKED_LIST
+};
+
+union chcr
+{
+    struct
+    {
+        uint32_t dir :1, memstep :1, :6, chopping :1, sync_mode :2, :5,
+            chopping_dma_window_sz :3, :1, chopping_cpu_window_sz :3, :1,
+            start_busy :1, :3, start_trigger :1, :3;
+    } bits;
+
+    uint32_t mask;
+};
+
+#define DMA_BASE(dma, off) ((dma) * 0x10 + 0x1f801080 + (off))
+#define D2_MADR ((volatile union madr *)DMA_BASE(2, 0))
+#define D2_BCR ((volatile union bcr *)DMA_BASE(2, 4))
+#define D2_CHCR ((volatile union chcr *)DMA_BASE(2, 8))
+#define DPCR ((volatile union dpcr *)0x1f8010f0)
+
+#endif
diff --git a/src/drv/ps1/gpu/CMakeLists.txt b/src/drv/ps1/gpu/CMakeLists.txt
new file mode 100644
index 0000000..9dead67
--- /dev/null
+++ b/src/drv/ps1/gpu/CMakeLists.txt
@@ -0,0 +1,18 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_gpu INTERFACE)
+target_include_directories(drv_ps1_gpu INTERFACE include)
diff --git a/src/drv/ps1/gpu/include/drv/ps1/gpu.h b/src/drv/ps1/gpu/include/drv/ps1/gpu.h
new file mode 100644
index 0000000..0f64a7f
--- /dev/null
+++ b/src/drv/ps1/gpu/include/drv/ps1/gpu.h
@@ -0,0 +1,167 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_GPU_H
+#define DRV_PS1_GPU_H
+
+#include <stdint.h>
+
+enum
+{
+    GP0_TEXTRECT_VARSZ_OPAQ_RAW = 0x65,
+    GP0_COPY_RECT_CPU_VRAM = 0xa0,
+    GP0_COPY_RECT_VRAM_CPU = 0xc0,
+    GP0_DRAW_MODE = 0xe1,
+    GP0_TEX_WINDOW,
+    GP0_DRAW_AREA_TOP_LEFT,
+    GP0_DRAW_AREA_BOTTOM_RIGHT,
+    GP0_DRAW_OFFSET,
+    GP0_DRAW_MASK_BIT
+};
+
+enum
+{
+    GP1_RESET_GPU,
+    GP1_RESET_CMDBUF,
+    GP1_ACK_IRQ,
+    GP1_DISPLAY_ENABLE,
+    GP1_DMA_DIR,
+    GP1_START_DISPLAY_AREA,
+    GP1_H_DISPLAY_RANGE,
+    GP1_V_DISPLAY_RANGE,
+    GP1_DISPLAY_MODE
+};
+
+enum
+{
+    GP1_DMA_DIR_OFF,
+    GP1_DMA_DIR_FIFO,
+    GP1_DMA_DIR_CPU_TO_GP0,
+    GP1_DMA_DIR_GPUREAD_TO_CPU
+};
+
+union drv_ps1_gpu_gp0
+{
+    uint32_t mask;
+
+    struct
+    {
+        uint32_t :24, cmd :8;
+    } copy_rect;
+
+    struct
+    {
+        uint16_t x, y;
+    } coord;
+
+    struct
+    {
+        uint16_t w, h;
+    } size;
+
+    struct
+    {
+        uint32_t page_x :4, page_y :1, stp :2, bpp :2, dither :1,
+            draw_to_display :1, tex_disable :1, xflip :1, yflip :1, :10,
+            cmd :8;
+    } draw_mode;
+
+    struct
+    {
+        uint32_t mask_x :5, mask_y :5, off_x :5, off_y :5, :4, cmd :8;
+    } tex_window;
+
+    struct
+    {
+        uint32_t x :10, y :9, :5, cmd :8;
+    } draw_area_tl, draw_area_br;
+
+    struct
+    {
+        int32_t x :11, y :11, :2, cmd :8;
+    } offset;
+
+    struct
+    {
+        uint32_t set :1, check :1, :22, cmd :8;
+    } mask_bit;
+};
+
+union drv_ps1_gpu_gp1
+{
+    uint32_t mask;
+
+    struct
+    {
+        uint32_t :24, cmd:8;
+    } reset_gpu, reset_cmdbuf, ack_irq;
+
+    struct
+    {
+        uint32_t disable :1, :23, cmd :8;
+    } display;
+
+    struct
+    {
+        uint32_t dir :2, :22, cmd :8;
+    } dma;
+
+    struct
+    {
+        uint32_t x :10, y :9, :5, cmd :8;
+    } disparea;
+
+    struct
+    {
+        uint32_t x1 :12, x2 :12, cmd :8;
+    } h_display_range;
+
+    struct
+    {
+        uint32_t y1 :10, y2 :10, :4, cmd :8;
+    } v_display_range;
+
+    struct
+    {
+        uint32_t hres :2, vres :1, vmode :1, coldepth :1, vinterlace :1,
+            hres2 :1, reverse :1, :16, cmd :8;
+    } display_mode;
+};
+
+union drv_ps1_gpu_stat
+{
+    struct
+    {
+        uint32_t x_base :4, y_base :1, stp :2, bpp :2, dither :1,
+            draw_to_display :1, set_mask :1, draw_pix :1, interlace :1,
+            reverse :1, disable :1, xres2 :1, xres1 :2, yres :1, vmode :1,
+            coldepth :1, vinterlace :1, display_enable :1, irq_req :1,
+            dma_req :1, ready_cmd :1, ready_send :1, ready_recv :1,
+            ready_dma :1, dma_dir :2, draw_odd :1;
+    } bits;
+
+    uint32_t mask;
+};
+
+#define GPU_BASE 0x1f801810
+#define GPU_REG(x) (GPU_BASE + (x))
+#define GP0 ((volatile union drv_ps1_gpu_gp0 *)GPU_REG(0))
+#define GP1 ((volatile union drv_ps1_gpu_gp1 *)GPU_REG(4))
+#define GPUSTAT ((volatile const union drv_ps1_gpu_stat *)GPU_REG(4))
+
+#endif
diff --git a/src/drv/ps1/include/drv/ps1.h b/src/drv/ps1/include/drv/ps1.h
new file mode 100644
index 0000000..951259a
--- /dev/null
+++ b/src/drv/ps1/include/drv/ps1.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_H
+#define DRV_PS1_H
+
+#include <drv/event.h>
+
+struct drv_port *drv_ps1_init(const struct drv_event *ev);
+int drv_ps1_update(struct drv_port *p);
+void drv_ps1_free(struct drv_port *p);
+
+#endif
diff --git a/src/drv/ps1/interrupt/CMakeLists.txt b/src/drv/ps1/interrupt/CMakeLists.txt
new file mode 100644
index 0000000..29becb8
--- /dev/null
+++ b/src/drv/ps1/interrupt/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_interrupt INTERFACE)
+target_include_directories(drv_ps1_interrupt INTERFACE include)
+target_link_libraries(drv_ps1_interrupt INTERFACE c)
diff --git a/src/drv/ps1/interrupt/include/drv/ps1/interrupt.h b/src/drv/ps1/interrupt/include/drv/ps1/interrupt.h
new file mode 100644
index 0000000..9e0bfb4
--- /dev/null
+++ b/src/drv/ps1/interrupt/include/drv/ps1/interrupt.h
@@ -0,0 +1,39 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_INTERRUPT_H
+#define DRV_PS1_INTERRUPT_H
+
+#include <stdint.h>
+
+union drv_ps1_interrupt
+{
+    struct
+    {
+        uint32_t vblank :1, gpu :1, cdrom :1, dma :1, tmr0 :1, tmr1 :1, tmr2 :1,
+            controller :1, sio :1, spu :1, lightpen :1, :21;
+    } bits;
+
+    uint32_t mask;
+};
+
+#define I_BASE(x) (0x1f801070 + (x))
+#define I_STAT ((volatile union drv_ps1_interrupt *)I_BASE(0))
+#define I_MASK ((volatile union drv_ps1_interrupt *)I_BASE(4))
+
+#endif
diff --git a/src/drv/ps1/mc/CMakeLists.txt b/src/drv/ps1/mc/CMakeLists.txt
new file mode 100644
index 0000000..13ae399
--- /dev/null
+++ b/src/drv/ps1/mc/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_mc)
+add_subdirectory(src)
+target_include_directories(drv_ps1_mc PUBLIC include PRIVATE private_include)
+target_link_libraries(drv_ps1_mc PUBLIC c drv_event)
diff --git a/src/drv/ps1/mc/include/drv/ps1/mc.h b/src/drv/ps1/mc/include/drv/ps1/mc.h
new file mode 100644
index 0000000..637bd37
--- /dev/null
+++ b/src/drv/ps1/mc/include/drv/ps1/mc.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_MC_H
+#define DRV_PS1_MC_H
+
+#include <drv/event.h>
+
+struct drv_ps1_mc *drv_ps1_mc_init(const struct drv_event *ev);
+int drv_ps1_mc_update(struct drv_ps1_mc *mc);
+void drv_ps1_mc_free(struct drv_ps1_mc *mc);
+
+#endif
diff --git a/src/drv/ps1/mc/private_include/drv/ps1/mc/types.h b/src/drv/ps1/mc/private_include/drv/ps1/mc/types.h
new file mode 100644
index 0000000..920e55a
--- /dev/null
+++ b/src/drv/ps1/mc/private_include/drv/ps1/mc/types.h
@@ -0,0 +1,37 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_MC_TYPES_H
+#define DRV_PS1_MC_TYPES_H
+
+#include <drv/event.h>
+
+struct drv_ps1_mc
+{
+    const struct drv_event *ev;
+};
+
+enum
+{
+    MC_0,
+    MC_1,
+
+    N_MC
+};
+
+#endif
diff --git a/src/drv/ps1/mc/src/CMakeLists.txt b/src/drv/ps1/mc/src/CMakeLists.txt
new file mode 100644
index 0000000..6eb62be
--- /dev/null
+++ b/src/drv/ps1/mc/src/CMakeLists.txt
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1_mc PRIVATE
+    free.c
+    init.c
+    update.c
+)
diff --git a/src/drv/ps1/mc/src/free.c b/src/drv/ps1/mc/src/free.c
new file mode 100644
index 0000000..924e1bf
--- /dev/null
+++ b/src/drv/ps1/mc/src/free.c
@@ -0,0 +1,23 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/mc.h>
+
+void drv_ps1_mc_free(struct drv_ps1_mc *const mc)
+{
+}
diff --git a/src/drv/ps1/mc/src/init.c b/src/drv/ps1/mc/src/init.c
new file mode 100644
index 0000000..4bb034a
--- /dev/null
+++ b/src/drv/ps1/mc/src/init.c
@@ -0,0 +1,34 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/mc.h>
+#include <drv/ps1/mc/types.h>
+#include <drv/event.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+struct drv_ps1_mc *drv_ps1_mc_init(const struct drv_event *const ev)
+{
+    struct drv_ps1_mc *const ret = malloc(sizeof *ret);
+
+    if (!ret)
+        return NULL;
+
+    *ret = (const struct drv_ps1_mc){.ev = ev};
+    return ret;
+}
diff --git a/src/drv/ps1/mc/src/update.c b/src/drv/ps1/mc/src/update.c
new file mode 100644
index 0000000..f4b29d9
--- /dev/null
+++ b/src/drv/ps1/mc/src/update.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/mc.h>
+#include <drv/event.h>
+
+int drv_ps1_mc_update(struct drv_ps1_mc *const mc)
+{
+    /* TODO */
+    return 0;
+}
diff --git a/src/drv/ps1/pad/CMakeLists.txt b/src/drv/ps1/pad/CMakeLists.txt
new file mode 100644
index 0000000..cd25672
--- /dev/null
+++ b/src/drv/ps1/pad/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_pad)
+add_subdirectory(src)
+target_include_directories(drv_ps1_pad PUBLIC include PRIVATE private_include)
+target_link_libraries(drv_ps1_pad PUBLIC c drv_event)
diff --git a/src/drv/ps1/pad/include/drv/ps1/pad.h b/src/drv/ps1/pad/include/drv/ps1/pad.h
new file mode 100644
index 0000000..d8070de
--- /dev/null
+++ b/src/drv/ps1/pad/include/drv/ps1/pad.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_PAD_H
+#define DRV_PS1_PAD_H
+
+#include <drv/event.h>
+
+struct drv_ps1_pad *drv_ps1_pad_init(const struct drv_event *ev);
+int drv_ps1_pad_update(struct drv_ps1_pad *pad);
+void drv_ps1_pad_free(struct drv_ps1_pad *pad);
+
+#endif
diff --git a/src/drv/ps1/pad/private_include/drv/ps1/pad/types.h b/src/drv/ps1/pad/private_include/drv/ps1/pad/types.h
new file mode 100644
index 0000000..b79e344
--- /dev/null
+++ b/src/drv/ps1/pad/private_include/drv/ps1/pad/types.h
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_PAD_TYPES_H
+#define DRV_PS1_PAD_TYPES_H
+
+#include <drv/event.h>
+
+struct drv_ps1_pad
+{
+    const struct drv_event *ev;
+};
+
+#endif
diff --git a/src/drv/ps1/pad/src/CMakeLists.txt b/src/drv/ps1/pad/src/CMakeLists.txt
new file mode 100644
index 0000000..9da3661
--- /dev/null
+++ b/src/drv/ps1/pad/src/CMakeLists.txt
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1_pad PRIVATE
+    free.c
+    init.c
+    update.c
+)
diff --git a/src/drv/ps1/pad/src/free.c b/src/drv/ps1/pad/src/free.c
new file mode 100644
index 0000000..925e23a
--- /dev/null
+++ b/src/drv/ps1/pad/src/free.c
@@ -0,0 +1,23 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/pad.h>
+
+void drv_ps1_pad_free(struct drv_ps1_pad *const pad)
+{
+}
diff --git a/src/drv/ps1/pad/src/init.c b/src/drv/ps1/pad/src/init.c
new file mode 100644
index 0000000..3d2bd51
--- /dev/null
+++ b/src/drv/ps1/pad/src/init.c
@@ -0,0 +1,34 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/pad.h>
+#include <drv/ps1/pad/types.h>
+#include <drv/event.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+struct drv_ps1_pad *drv_ps1_pad_init(const struct drv_event *const ev)
+{
+    struct drv_ps1_pad *const ret = malloc(sizeof *ret);
+
+    if (!ret)
+        return NULL;
+
+    *ret = (const struct drv_ps1_pad){.ev = ev};
+    return ret;
+}
diff --git a/src/drv/ps1/pad/src/update.c b/src/drv/ps1/pad/src/update.c
new file mode 100644
index 0000000..35fb7a7
--- /dev/null
+++ b/src/drv/ps1/pad/src/update.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/pad.h>
+#include <drv/event.h>
+
+int drv_ps1_pad_update(struct drv_ps1_pad *const pad)
+{
+    /* TODO */
+    return 0;
+}
diff --git a/src/drv/ps1/private_include/drv/ps1/types.h b/src/drv/ps1/private_include/drv/ps1/types.h
new file mode 100644
index 0000000..ffb3559
--- /dev/null
+++ b/src/drv/ps1/private_include/drv/ps1/types.h
@@ -0,0 +1,33 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_TYPES_H
+#define DRV_PS1_TYPES_H
+
+#include <drv/ps1/cd.h>
+#include <drv/ps1/mc.h>
+#include <drv/ps1/pad.h>
+
+struct drv_port
+{
+    struct drv_ps1_mc *mc;
+    struct drv_ps1_cd *cd;
+    struct drv_ps1_pad *pad;
+};
+
+#endif
diff --git a/src/drv/ps1/rcnt/CMakeLists.txt b/src/drv/ps1/rcnt/CMakeLists.txt
new file mode 100644
index 0000000..65af1a4
--- /dev/null
+++ b/src/drv/ps1/rcnt/CMakeLists.txt
@@ -0,0 +1,22 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_rcnt)
+add_subdirectory(src)
+target_include_directories(drv_ps1_rcnt PUBLIC include PRIVATE private_include)
+target_link_libraries(drv_ps1_rcnt
+    PUBLIC c
+    PRIVATE drv_ps1_bios drv_ps1_interrupt)
diff --git a/src/drv/ps1/rcnt/include/drv/ps1/rcnt.h b/src/drv/ps1/rcnt/include/drv/ps1/rcnt.h
new file mode 100644
index 0000000..a4e8e1b
--- /dev/null
+++ b/src/drv/ps1/rcnt/include/drv/ps1/rcnt.h
@@ -0,0 +1,45 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_RCNT_H
+#define DRV_PS1_RCNT_H
+
+#include <stdint.h>
+
+union drv_ps1_rcnt_cfg
+{
+    struct
+    {
+        uint32_t sync_enable :1, sync_mode :2, reset :1, irq_tgt :1,
+            irq_max :1, repeat :1, pulse_toggle :1, clocksrc :2, intreq :1;
+    } bits;
+
+    uint32_t word;
+};
+
+enum drv_ps1_rcnt
+{
+    DRV_PS1_RCNT0,
+    DRV_PS1_RCNT1,
+    DRV_PS1_RCNT2
+};
+
+int drv_ps1_rcnt_init(enum drv_ps1_rcnt rcnt, uint16_t target,
+    const union drv_ps1_rcnt_cfg *cfg, int (*f)(void));
+
+#endif
diff --git a/src/drv/ps1/rcnt/private_include/drv/ps1/rcnt/regs.h b/src/drv/ps1/rcnt/private_include/drv/ps1/rcnt/regs.h
new file mode 100644
index 0000000..443a487
--- /dev/null
+++ b/src/drv/ps1/rcnt/private_include/drv/ps1/rcnt/regs.h
@@ -0,0 +1,36 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_RCNT_REGS_H
+#define DRV_PS1_RCNT_REGS_H
+
+#include <drv/ps1/rcnt.h>
+#include <stdint.h>
+
+struct rcnt_value
+{
+    uint32_t value :16, :16;
+};
+
+#define RCNT_BASE(n) (0x1f801100 + (n << 4))
+#define RCNT_REG(n, m) (RCNT_BASE(n) + m)
+#define RCNT_VALUE(n) ((volatile struct rcnt_value *)RCNT_REG(n, 0))
+#define RCNT_MODE(n) ((volatile union drv_ps1_rcnt_cfg *)RCNT_REG(n, 4))
+#define RCNT_TARGET(n) ((volatile struct rcnt_value *)RCNT_REG(n, 8))
+
+#endif
diff --git a/src/drv/ps1/rcnt/src/CMakeLists.txt b/src/drv/ps1/rcnt/src/CMakeLists.txt
new file mode 100644
index 0000000..0254ed8
--- /dev/null
+++ b/src/drv/ps1/rcnt/src/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1_rcnt PRIVATE
+    init.c
+)
diff --git a/src/drv/ps1/rcnt/src/init.c b/src/drv/ps1/rcnt/src/init.c
new file mode 100644
index 0000000..770cd15
--- /dev/null
+++ b/src/drv/ps1/rcnt/src/init.c
@@ -0,0 +1,59 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/rcnt.h>
+#include <drv/ps1/rcnt/regs.h>
+#include <drv/ps1/interrupt.h>
+#include <drv/ps1/bios.h>
+#include <stddef.h>
+#include <stdint.h>
+
+int drv_ps1_rcnt_init(const enum drv_ps1_rcnt rcnt, const uint16_t target,
+    const union drv_ps1_rcnt_cfg *const cfg, int (*const f)(void))
+{
+    int event, class;
+
+    EnterCriticalSection();
+    RCNT_TARGET(rcnt)->value = target;
+    *RCNT_MODE(rcnt) = *cfg;
+
+    switch (rcnt)
+    {
+        case DRV_PS1_RCNT0:
+            I_MASK->bits.tmr0 = 1;
+            class = CLASS_RTC0;
+            break;
+        case DRV_PS1_RCNT1:
+            I_MASK->bits.tmr1 = 1;
+            class = CLASS_RTC1;
+            break;
+        case DRV_PS1_RCNT2:
+            I_MASK->bits.tmr2 = 1;
+            class = CLASS_RTC2;
+            break;
+    }
+
+    event = OpenEvent(class, SPEC_INTERRUPTED, MODE_EXECUTE, f);
+    ExitCriticalSection();
+
+    if (event == -1)
+        return -1;
+
+    EnableEvent(event);
+    return 0;
+}
diff --git a/src/drv/ps1/src/CMakeLists.txt b/src/drv/ps1/src/CMakeLists.txt
new file mode 100644
index 0000000..4694191
--- /dev/null
+++ b/src/drv/ps1/src/CMakeLists.txt
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1 PRIVATE
+    free.c
+    init.c
+    update.c
+)
diff --git a/src/drv/ps1/src/free.c b/src/drv/ps1/src/free.c
new file mode 100644
index 0000000..a1348d6
--- /dev/null
+++ b/src/drv/ps1/src/free.c
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1.h>
+#include <drv/ps1/types.h>
+
+void drv_ps1_free(struct drv_port *const p)
+{
+}
diff --git a/src/drv/ps1/src/init.c b/src/drv/ps1/src/init.c
new file mode 100644
index 0000000..37a08be
--- /dev/null
+++ b/src/drv/ps1/src/init.c
@@ -0,0 +1,53 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1.h>
+#include <drv/ps1/types.h>
+#include <drv/ps1/cd.h>
+#include <drv/ps1/mc.h>
+#include <drv/ps1/pad.h>
+#include <stdlib.h>
+
+struct drv_port *drv_ps1_init(const struct drv_event *const ev)
+{
+    struct drv_port *ret = NULL;
+    struct drv_ps1_mc *mc = NULL;
+    struct drv_ps1_cd *cd = NULL;
+    struct drv_ps1_pad *pad = NULL;
+
+    if (!(mc = drv_ps1_mc_init(ev))
+        || !(cd = drv_ps1_cd_init(ev))
+        || !(pad = drv_ps1_pad_init(ev))
+        || !(ret = malloc(sizeof *ret)))
+        goto failure;
+
+    *ret = (const struct drv_port)
+    {
+        .mc = mc,
+        .cd = cd,
+        .pad = pad
+    };
+
+    return ret;
+
+failure:
+    drv_ps1_mc_free(mc);
+    drv_ps1_cd_free(cd);
+    drv_ps1_pad_free(pad);
+    free(mc);
+}
diff --git a/src/drv/ps1/src/update.c b/src/drv/ps1/src/update.c
new file mode 100644
index 0000000..c96d9de
--- /dev/null
+++ b/src/drv/ps1/src/update.c
@@ -0,0 +1,33 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1.h>
+#include <drv/ps1/types.h>
+#include <drv/ps1/cd.h>
+#include <drv/ps1/mc.h>
+#include <drv/ps1/pad.h>
+
+int drv_ps1_update(struct drv_port *const p)
+{
+    if (drv_ps1_mc_update(p->mc)
+        || drv_ps1_cd_update(p->cd)
+        || drv_ps1_pad_update(p->pad))
+        return -1;
+
+    return 0;
+}
diff --git a/src/drv/ps1/time/CMakeLists.txt b/src/drv/ps1/time/CMakeLists.txt
new file mode 100644
index 0000000..2746810
--- /dev/null
+++ b/src/drv/ps1/time/CMakeLists.txt
@@ -0,0 +1,22 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_time)
+add_subdirectory(src)
+target_include_directories(drv_ps1_time PUBLIC include PRIVATE private_include)
+target_link_libraries(drv_ps1_time
+    PUBLIC c
+    PRIVATE drv drv_ps1_bios drv_ps1_interrupt drv_ps1_rcnt)
diff --git a/src/drv/ps1/time/include/drv/ps1/time.h b/src/drv/ps1/time/include/drv/ps1/time.h
new file mode 100644
index 0000000..d08ff39
--- /dev/null
+++ b/src/drv/ps1/time/include/drv/ps1/time.h
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_TIME_H
+#define DRV_PS1_TIME_H
+
+int drv_ps1_time_tick(void);
+
+#endif
diff --git a/src/drv/ps1/time/private_include/drv/ps1/time/types.h b/src/drv/ps1/time/private_include/drv/ps1/time/types.h
new file mode 100644
index 0000000..ad420c6
--- /dev/null
+++ b/src/drv/ps1/time/private_include/drv/ps1/time/types.h
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_TIME_TYPES_H
+#define DRV_PS1_TIME_TYPES_H
+
+#include <time.h>
+
+extern volatile struct timespec drv_ps1_time;
+
+#endif
diff --git a/src/drv/ps1/time/src/CMakeLists.txt b/src/drv/ps1/time/src/CMakeLists.txt
new file mode 100644
index 0000000..0ab540e
--- /dev/null
+++ b/src/drv/ps1/time/src/CMakeLists.txt
@@ -0,0 +1,23 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1_time PRIVATE
+    gettime.c
+    getres.c
+    globals.c
+    settime.c
+    tick.c
+)
diff --git a/src/drv/ps1/time/src/getres.c b/src/drv/ps1/time/src/getres.c
new file mode 100644
index 0000000..8dad204
--- /dev/null
+++ b/src/drv/ps1/time/src/getres.c
@@ -0,0 +1,34 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/time.h>
+#include <errno.h>
+#include <time.h>
+
+int drv_time_getres(const clockid_t id, struct timespec *const ts)
+{
+    if (id != CLOCK_REALTIME)
+    {
+        errno = EINVAL;
+        return -1;
+    }
+    else if (ts)
+        *ts = (const struct timespec){.tv_nsec = 1000000};
+
+    return 0;
+}
diff --git a/src/drv/ps1/time/src/gettime.c b/src/drv/ps1/time/src/gettime.c
new file mode 100644
index 0000000..f01030f
--- /dev/null
+++ b/src/drv/ps1/time/src/gettime.c
@@ -0,0 +1,37 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/time.h>
+#include <drv/ps1/time/types.h>
+#include <drv/ps1/bios.h>
+#include <errno.h>
+#include <time.h>
+
+int drv_time_gettime(const clockid_t id, struct timespec *const ts)
+{
+    if (id != CLOCK_REALTIME)
+    {
+        errno = EINVAL;
+        return -1;
+    }
+
+    EnterCriticalSection();
+    *ts = drv_ps1_time;
+    ExitCriticalSection();
+    return 0;
+}
diff --git a/src/drv/ps1/time/src/globals.c b/src/drv/ps1/time/src/globals.c
new file mode 100644
index 0000000..cb2a825
--- /dev/null
+++ b/src/drv/ps1/time/src/globals.c
@@ -0,0 +1,22 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/time/types.h>
+#include <time.h>
+
+volatile struct timespec drv_ps1_time;
diff --git a/src/drv/ps1/time/src/settime.c b/src/drv/ps1/time/src/settime.c
new file mode 100644
index 0000000..25de76f
--- /dev/null
+++ b/src/drv/ps1/time/src/settime.c
@@ -0,0 +1,37 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/time.h>
+#include <drv/ps1/time/types.h>
+#include <drv/ps1/bios.h>
+#include <errno.h>
+#include <time.h>
+
+int drv_time_settime(const clockid_t id, const struct timespec *const ts)
+{
+    if (id != CLOCK_REALTIME)
+    {
+        errno = EINVAL;
+        return -1;
+    }
+
+    EnterCriticalSection();
+    drv_ps1_time = *ts;
+    ExitCriticalSection();
+    return 0;
+}
diff --git a/src/drv/ps1/time/src/tick.c b/src/drv/ps1/time/src/tick.c
new file mode 100644
index 0000000..b80174b
--- /dev/null
+++ b/src/drv/ps1/time/src/tick.c
@@ -0,0 +1,42 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/ps1/time.h>
+#include <drv/ps1/time/types.h>
+#include <drv/ps1/interrupt.h>
+#include <time.h>
+
+int drv_ps1_time_tick(void)
+{
+    int ret = 0;
+    struct timespec ts;
+    volatile struct timespec *const t = &drv_ps1_time;
+
+    if (clock_getres(CLOCK_REALTIME, &ts))
+        ret = -1;
+    else if (t->tv_nsec >= 1000000000 - ts.tv_nsec)
+    {
+        t->tv_sec++;
+        t->tv_nsec = 0;
+    }
+    else
+        t->tv_nsec += ts.tv_nsec;
+
+    I_STAT->bits.tmr2 = 1;
+    return ret;
+}
diff --git a/src/drv/src/CMakeLists.txt b/src/drv/src/CMakeLists.txt
new file mode 100644
index 0000000..591532c
--- /dev/null
+++ b/src/drv/src/CMakeLists.txt
@@ -0,0 +1,22 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv PRIVATE
+    free.c
+    init.c
+    tree.c
+    update.c
+)
diff --git a/src/drv/src/free.c b/src/drv/src/free.c
new file mode 100644
index 0000000..37c259c
--- /dev/null
+++ b/src/drv/src/free.c
@@ -0,0 +1,31 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/drv.h>
+#include <drv/tree.h>
+#include <drv/types.h>
+#include <stdlib.h>
+
+void drv_free(struct drv *const d)
+{
+    if (d)
+        for (size_t i = 0; i < d->n; i++)
+            drv_tree_free[i](d->ports[i]);
+
+    free(d);
+}
diff --git a/src/drv/src/init.c b/src/drv/src/init.c
new file mode 100644
index 0000000..7c62aba
--- /dev/null
+++ b/src/drv/src/init.c
@@ -0,0 +1,62 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/drv.h>
+#include <drv/types.h>
+#include <drv/tree.h>
+#include <drv/port.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+struct drv *drv_init(const struct drv_event *const ev)
+{
+    size_t init = 0;
+    struct drv *const ret = malloc(sizeof *ret);
+    struct drv_port **const ports = malloc(drv_tree_n * sizeof *ports);
+
+    if (!ports || !ret)
+        goto failure;
+
+    for (size_t i = 0; i < drv_tree_n; i++, init++)
+    {
+        struct drv_port *const p = drv_tree_init[i](ev);
+
+        if (!p)
+            goto failure;
+
+        ports[i] = p;
+    }
+
+    *ret = (const struct drv)
+    {
+        .ports = ports,
+        .n = drv_tree_n
+    };
+
+    return ret;
+
+failure:
+
+    if (ports)
+        for (size_t i = 0; i < init; i++)
+            drv_tree_free[i](ports[i]);
+
+    free(ports);
+    free(ret);
+    return NULL;
+}
diff --git a/src/drv/src/tree.c b/src/drv/src/tree.c
new file mode 100644
index 0000000..5759ca2
--- /dev/null
+++ b/src/drv/src/tree.c
@@ -0,0 +1,51 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/drv.h>
+#include <drv/tree.h>
+#include <drv/tty.h>
+#include <drv/port.h>
+#include <stddef.h>
+
+struct drv_port *(*const drv_tree_init[])(const struct drv_event *) =
+{
+#if DRV_PS1
+    drv_ps1_init,
+#endif
+    drv_tty_init
+};
+
+enum {N = sizeof drv_tree_init / sizeof *drv_tree_init};
+
+int (*const drv_tree_update[N])(struct drv_port *) =
+{
+#if DRV_PS1
+    drv_ps1_update,
+#endif
+    drv_tty_update
+};
+
+void (*const drv_tree_free[N])(struct drv_port *) =
+{
+#if DRV_PS1
+    drv_ps1_free,
+#endif
+    drv_tty_free
+};
+
+const size_t drv_tree_n = N;
diff --git a/src/drv/src/update.c b/src/drv/src/update.c
new file mode 100644
index 0000000..e1ee921
--- /dev/null
+++ b/src/drv/src/update.c
@@ -0,0 +1,32 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/drv.h>
+#include <drv/tree.h>
+#include <drv/types.h>
+#include <drv/port.h>
+#include <stddef.h>
+
+int drv_update(struct drv *const d)
+{
+    for (size_t i = 0; i < drv_tree_n; i++)
+        if (drv_tree_update[i](d->ports[i]))
+            return -1;
+
+    return 0;
+}
diff --git a/src/drv/tty/CMakeLists.txt b/src/drv/tty/CMakeLists.txt
new file mode 100644
index 0000000..9661134
--- /dev/null
+++ b/src/drv/tty/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_tty)
+add_subdirectory(src)
+target_include_directories(drv_tty PUBLIC include PRIVATE private_include)
+target_link_libraries(drv_tty PUBLIC c PRIVATE gfx drv_event)
diff --git a/src/drv/tty/include/drv/tty.h b/src/drv/tty/include/drv/tty.h
new file mode 100644
index 0000000..49115f5
--- /dev/null
+++ b/src/drv/tty/include/drv/tty.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_TTY_H
+#define DRV_TTY_H
+
+#include <drv/event.h>
+
+struct drv_port *drv_tty_init(const struct drv_event *ev);
+int drv_tty_update(struct drv_port *p);
+void drv_tty_free(struct drv_port *p);
+
+#endif
diff --git a/src/drv/tty/private_include/drv/tty/font.h b/src/drv/tty/private_include/drv/tty/font.h
new file mode 100644
index 0000000..60d9740
--- /dev/null
+++ b/src/drv/tty/private_include/drv/tty/font.h
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_TTY_FONT_H
+#define DRV_TTY_FONT_H
+
+#include <gfx/sprite.h>
+#include <stddef.h>
+
+struct gfx_sprite ttyfont_spr;
+extern const unsigned char ttyfont[];
+extern const size_t ttyfont_size;
+
+#endif
diff --git a/src/drv/tty/private_include/drv/tty/ops.h b/src/drv/tty/private_include/drv/tty/ops.h
new file mode 100644
index 0000000..1d7cbd2
--- /dev/null
+++ b/src/drv/tty/private_include/drv/tty/ops.h
@@ -0,0 +1,30 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_TTY_OPS_H
+#define DRV_TTY_OPS_H
+
+#include <drv/event.h>
+#include <drv/tty/types.h>
+#include <stddef.h>
+
+int drv_tty_write(const void *buf, size_t n, const struct drv_event_done *done,
+    void *args);
+int drv_tty_setdim(struct drv_port *p, unsigned x, unsigned y);
+
+#endif
diff --git a/src/drv/tty/private_include/drv/tty/types.h b/src/drv/tty/private_include/drv/tty/types.h
new file mode 100644
index 0000000..e8fdd40
--- /dev/null
+++ b/src/drv/tty/private_include/drv/tty/types.h
@@ -0,0 +1,39 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_TTY_TYPES_H
+#define DRV_TTY_TYPES_H
+
+#include <drv/event.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+struct row
+{
+    char *columns;
+};
+
+struct drv_port
+{
+    bool init;
+    struct row *rows, *first_row, *last_row;
+    size_t nrows, ncolumns, last_column;
+    struct drv_event ev;
+};
+
+#endif
diff --git a/src/drv/tty/src/CMakeLists.txt b/src/drv/tty/src/CMakeLists.txt
new file mode 100644
index 0000000..d0690c8
--- /dev/null
+++ b/src/drv/tty/src/CMakeLists.txt
@@ -0,0 +1,27 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_tty PRIVATE
+    free.c
+    init.c
+    setdim.c
+    update.c
+    write.c
+)
+
+if(PS1_BUILD)
+    add_subdirectory(ps1)
+endif()
diff --git a/src/drv/tty/src/free.c b/src/drv/tty/src/free.c
new file mode 100644
index 0000000..346e706
--- /dev/null
+++ b/src/drv/tty/src/free.c
@@ -0,0 +1,39 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/event.h>
+#include <drv/tty.h>
+#include <drv/tty/font.h>
+#include <drv/tty/ops.h>
+#include <drv/tty/types.h>
+#include <gfx/gfx.h>
+#include <gfx/sprite.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+void drv_tty_free(struct drv_port *const p)
+{
+    if (!p)
+        return;
+
+    for (size_t i = 0; i < p->nrows; i++)
+        free(p->rows[i].columns);
+
+    free(p->rows);
+    free(p);
+}
diff --git a/src/drv/tty/src/init.c b/src/drv/tty/src/init.c
new file mode 100644
index 0000000..b436cef
--- /dev/null
+++ b/src/drv/tty/src/init.c
@@ -0,0 +1,58 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/event.h>
+#include <drv/tty.h>
+#include <drv/tty/font.h>
+#include <drv/tty/ops.h>
+#include <drv/tty/types.h>
+#include <gfx/gfx.h>
+#include <gfx/sprite.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int load(void *const buf, const size_t n, void *const args)
+{
+    size_t *const off = args;
+
+    memcpy(buf, ttyfont + *off, n);
+    *off += n;
+    return 0;
+}
+
+struct drv_port *drv_tty_init(const struct drv_event *const ev)
+{
+    size_t off = 0;
+    struct drv_port *ret = NULL;
+
+    if (!(ret = malloc(sizeof *ret)))
+        goto failure;
+
+    *ret = (const struct drv_port){.ev = *ev};
+    gfx_sprite_load(&ttyfont_spr, load, &off);
+
+    if (drv_tty_setdim(ret, screen_w, screen_h))
+        goto failure;
+
+    return ret;
+
+failure:
+    drv_tty_free(ret);
+    return NULL;
+}
diff --git a/src/drv/tty/src/ps1/CMakeLists.txt b/src/drv/tty/src/ps1/CMakeLists.txt
new file mode 100644
index 0000000..0dbe9ef
--- /dev/null
+++ b/src/drv/tty/src/ps1/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_tty PRIVATE
+    ttyfont_tim.c
+)
diff --git a/src/drv/tty/src/ps1/ttyfont_tim.c b/src/drv/tty/src/ps1/ttyfont_tim.c
new file mode 100644
index 0000000..ebf22d4
--- /dev/null
+++ b/src/drv/tty/src/ps1/ttyfont_tim.c
@@ -0,0 +1,705 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* Derived from res/font.bmp. See res/orig/LICENSE for details. */
+
+#include <drv/tty/font.h>
+#include <stddef.h>
+
+const unsigned char ttyfont[] = {
+  0x10, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00,
+  0x80, 0x02, 0xf2, 0x01, 0x10, 0x00, 0x01, 0x00, 0xe7, 0x18, 0x00, 0x00,
+  0x8e, 0x31, 0x18, 0x7b, 0xff, 0x7f, 0x80, 0x08, 0x42, 0x08, 0x42, 0x08,
+  0x44, 0x08, 0x42, 0x00, 0x02, 0x10, 0x80, 0x08, 0x42, 0x08, 0x42, 0x08,
+  0x42, 0x08, 0x42, 0x08, 0x8c, 0x1f, 0x00, 0x00, 0x80, 0x02, 0x00, 0x00,
+  0x18, 0x00, 0xa8, 0x00, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x22,
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+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x21, 0x32, 0x34, 0x10, 0x11, 0x11, 0x11,
+  0x32, 0x10, 0x11, 0x11, 0x11, 0x32, 0x34, 0x20, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x21, 0x43, 0x03, 0x10, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x02, 0x43, 0x03, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x22,
+  0x22, 0x22, 0x22, 0x11, 0x11, 0x21, 0x44, 0x00, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x21, 0x40, 0x04, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x22, 0x22, 0x22, 0x22, 0x11, 0x11, 0x32,
+  0x44, 0x44, 0x03, 0x11, 0x11, 0x21, 0x44, 0x10, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x11, 0x42, 0x04, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x32, 0x03, 0x32, 0x03, 0x11, 0x11, 0x02,
+  0x00, 0x42, 0x03, 0x11, 0x11, 0x22, 0x44, 0x10, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x11, 0x42, 0x04, 0x12, 0x11, 0x11, 0x21,
+  0x22, 0x22, 0x22, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x42, 0x04, 0x42, 0x04, 0x11, 0x11, 0x11,
+  0x22, 0x33, 0x00, 0x11, 0x11, 0x42, 0x04, 0x10, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x11, 0x02, 0x44, 0x10, 0x11, 0x11, 0x22,
+  0x34, 0x20, 0x03, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x42, 0x04, 0x42, 0x04, 0x11, 0x11, 0x21,
+  0x32, 0x03, 0x10, 0x11, 0x11, 0x42, 0x04, 0x12, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x11, 0x22, 0x44, 0x10, 0x11, 0x11, 0x32,
+  0x00, 0x43, 0x00, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x32, 0x04, 0x42, 0x04, 0x11, 0x11, 0x22,
+  0x33, 0x00, 0x11, 0x11, 0x11, 0x02, 0x44, 0x10, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x11, 0x42, 0x04, 0x10, 0x11, 0x11, 0x02,
+  0x20, 0x00, 0x10, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x02, 0x43, 0x44, 0x04, 0x11, 0x11, 0x32,
+  0x04, 0x22, 0x22, 0x11, 0x11, 0x21, 0x44, 0x10, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x11, 0x42, 0x04, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x21, 0x00, 0x42, 0x03, 0x11, 0x11, 0x32,
+  0x44, 0x44, 0x03, 0x11, 0x11, 0x21, 0x44, 0x20, 0x11, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x21, 0x42, 0x04, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x22, 0x22, 0x33, 0x00, 0x11, 0x11, 0x02,
+  0x00, 0x00, 0x00, 0x11, 0x11, 0x21, 0x43, 0x03, 0x12, 0x11, 0x11, 0x11,
+  0x42, 0x10, 0x11, 0x11, 0x11, 0x22, 0x43, 0x03, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x32, 0x44, 0x03, 0x10, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x21, 0x30, 0x34, 0x10, 0x11, 0x11, 0x11,
+  0x32, 0x10, 0x11, 0x11, 0x11, 0x32, 0x34, 0x00, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x02, 0x00, 0x00, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x02, 0x00, 0x10, 0x11, 0x11, 0x11,
+  0x02, 0x10, 0x11, 0x11, 0x11, 0x02, 0x00, 0x10, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+  0x11, 0x11, 0x11, 0x11
+};
+
+const size_t ttyfont_size = sizeof ttyfont;
diff --git a/src/drv/tty/src/setdim.c b/src/drv/tty/src/setdim.c
new file mode 100644
index 0000000..3170197
--- /dev/null
+++ b/src/drv/tty/src/setdim.c
@@ -0,0 +1,62 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/event.h>
+#include <drv/tty.h>
+#include <drv/tty/font.h>
+#include <drv/tty/ops.h>
+#include <drv/tty/types.h>
+#include <gfx/gfx.h>
+#include <gfx/sprite.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+int drv_tty_setdim(struct drv_port *const p, const unsigned w, const unsigned h)
+{
+    const unsigned columns = w / 8, rows = h / 14;
+    struct row *const prs = malloc(rows * sizeof *prs);
+
+    if (!prs)
+        goto failure;
+
+    for (unsigned i = 0; i < rows; i++)
+        *(prs + i) = (const struct row){0};
+
+    for (unsigned i = 0; i < rows; i++)
+    {
+        struct row *const p = &prs[i];
+        char *const c = malloc(columns);
+
+        if (!c)
+            goto failure;
+
+        p->columns = c;
+    }
+
+    p->first_row = p->last_row = p->rows = prs;
+    p->nrows = rows;
+    p->ncolumns = columns;
+    return 0;
+
+failure:
+    for (unsigned i = 0; i < rows; i++)
+        free(prs[i].columns);
+
+    free(prs);
+    return -1;
+}
diff --git a/src/drv/tty/src/update.c b/src/drv/tty/src/update.c
new file mode 100644
index 0000000..b65f3f0
--- /dev/null
+++ b/src/drv/tty/src/update.c
@@ -0,0 +1,104 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/event.h>
+#include <drv/tty.h>
+#include <drv/tty/font.h>
+#include <drv/tty/ops.h>
+#include <drv/tty/types.h>
+#include <gfx/gfx.h>
+#include <gfx/sprite.h>
+#include <stdbool.h>
+
+static int init(struct drv_port *const p)
+{
+    const struct drv_event *const ev = &p->ev;
+    const struct drv_event_ops ops =
+    {
+        .write = drv_tty_write,
+        .args = p
+    };
+
+    if (p->init)
+        return 0;
+    else if (ev->status("tty", &ops, true, ev->args))
+        return -1;
+
+    p->init = true;
+    return 0;
+}
+
+static int draw(struct drv_port *const p)
+{
+    short y = 0;
+    const struct row *r = p->first_row, *last = p->last_row + 1;
+
+    if (last - p->rows >= p->nrows)
+        last = p->rows;
+
+    for (;;)
+    {
+        short x = 0;
+
+        for (const char *c = r->columns;
+            *c && c - r->columns < p->ncolumns; c++, x += 8)
+        {
+            if (*c == ' ')
+                continue;
+
+            struct gfx_sprite *const s = gfx_sprite_get();
+            const char ch = *c - '!';
+            const short u = (12 * ch) % ttyfont_spr.w;
+            const short v = 14 * ((12 * ch) / ttyfont_spr.w);
+
+            if (!s || gfx_sprite_clone(&ttyfont_spr, s))
+                return -1;
+
+            /* TODO: replace hardcoded values */
+            s->x = x;
+            s->y = y;
+            s->w = 12;
+            s->h = 14;
+            s->u += u;
+            s->v += v;
+
+            if (gfx_sprite_sort(s))
+                return -1;
+        }
+
+        if (++r - p->rows >= p->nrows)
+            r = p->rows;
+
+        if (r == last)
+            break;
+
+        y += 14;
+    }
+
+    return gfx_draw();
+}
+
+int drv_tty_update(struct drv_port *const p)
+{
+    if (init(p))
+        return -1;
+    else if (!gfx_ready())
+        return 0;
+
+    return draw(p);
+}
diff --git a/src/drv/tty/src/write.c b/src/drv/tty/src/write.c
new file mode 100644
index 0000000..6af6113
--- /dev/null
+++ b/src/drv/tty/src/write.c
@@ -0,0 +1,62 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <drv/event.h>
+#include <drv/tty.h>
+#include <drv/tty/types.h>
+#include <drv/tty/ops.h>
+#include <errno.h>
+#include <stddef.h>
+
+int drv_tty_write(const void *const buf, const size_t n,
+    const struct drv_event_done *const d, void *const args)
+{
+    struct drv_port *const p = args;
+
+    for (const char *s = buf; s - (const char *)buf < n; s++)
+    {
+        char *const col = &p->last_row->columns[p->last_column];
+
+        if (*s == '\r')
+        {
+            *col = '\0';
+            p->last_column = 0;
+        }
+        else
+        {
+            if (*s != '\n')
+                *col = *s;
+
+            if (*s == '\n' || ++p->last_column >= p->ncolumns - 1)
+            {
+                if (++p->last_row - p->rows >= p->nrows)
+                {
+                    p->last_row = p->rows;
+
+                    if (++p->first_row - p->rows >= p->nrows)
+                        p->first_row = p->rows;
+                }
+
+                col[p->last_column] = '\0';
+                p->last_column = 0;
+            }
+        }
+    }
+
+    return d->f(SUCCESS, d->args);
+}
diff --git a/src/fs/CMakeLists.txt b/src/fs/CMakeLists.txt
new file mode 100644
index 0000000..d08b64e
--- /dev/null
+++ b/src/fs/CMakeLists.txt
@@ -0,0 +1,24 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(fs)
+add_subdirectory(src)
+target_include_directories(fs PUBLIC include PRIVATE private_include)
+target_link_libraries(fs PUBLIC state)
+add_subdirectory(devfs)
+add_subdirectory(iso9660)
+add_subdirectory(ramfs)
+add_subdirectory(rootfs)
diff --git a/src/fs/devfs/CMakeLists.txt b/src/fs/devfs/CMakeLists.txt
new file mode 100644
index 0000000..7305bdf
--- /dev/null
+++ b/src/fs/devfs/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(devfs)
+add_subdirectory(src)
+target_include_directories(devfs PUBLIC include PRIVATE private_include)
+target_link_libraries(devfs PUBLIC state c PRIVATE fs drv ramfs)
diff --git a/src/fs/devfs/include/devfs.h b/src/fs/devfs/include/devfs.h
new file mode 100644
index 0000000..d9634fc
--- /dev/null
+++ b/src/fs/devfs/include/devfs.h
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DEVFS_H
+#define DEVFS_H
+
+int devfs_register(void);
+
+#endif
diff --git a/src/fs/devfs/private_include/devfs/ops.h b/src/fs/devfs/private_include/devfs/ops.h
new file mode 100644
index 0000000..f7c4e5b
--- /dev/null
+++ b/src/fs/devfs/private_include/devfs/ops.h
@@ -0,0 +1,48 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DEVFS_OPS_H
+#define DEVFS_OPS_H
+
+#include <fs/fs.h>
+#include <drv/event.h>
+#include <stdbool.h>
+
+int devfs_mount(const struct fs_mount *m, struct fs_ret *r);
+int devfs_mkdir(const struct fs_mkdir *m, const struct fs_mp *mp,
+    const union inode_result *i, struct fs_ret *r);
+int devfs_open(const struct fs_open *o, const struct fs_mp *mp,
+    const union inode_result *i, struct fs_ret *r);
+int devfs_read(const struct fs_read *r, struct fs_ret *ret);
+int devfs_write(const struct fs_write *w, struct fs_ret *r);
+int devfs_stat(const struct fs_stat *s, const struct fs_mp *mp,
+    const union inode_result *i, struct fs_ret *r);
+int devfs_close(const struct fs_close *c, struct fs_ret *r);
+int devfs_seek(const struct fs_seek *s, struct fs_ret *r);
+int devfs_search(const char *path, const struct fs_mp *mp,
+    union inode_result *inode, struct fs_ret *r);
+int devfs_status(const char *node, const struct drv_event_ops *const ops,
+    bool available, void *args);
+int devfs_flags(const union inode_result *i);
+int devfs_update(struct fs_mp_prv *pr);
+int devfs_mknod(const char *path, mode_t mode, dev_t dev,
+    const struct drv_event_ops *const ops, struct fs_mp_prv *mp);
+int devfs_unlink(const char *path, struct fs_mp_prv *mp);
+const struct devfs_ops *devfs_ops(const struct fs_mp_prv *pr, const char *node);
+
+#endif
diff --git a/src/fs/devfs/private_include/devfs/types.h b/src/fs/devfs/private_include/devfs/types.h
new file mode 100644
index 0000000..698ccac
--- /dev/null
+++ b/src/fs/devfs/private_include/devfs/types.h
@@ -0,0 +1,44 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DEVFS_TYPES_H
+#define DEVFS_TYPES_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <drv/drv.h>
+#include <drv/event.h>
+#include <ramfs.h>
+
+struct devfs_ops
+{
+    char *node;
+    struct drv_event_ops ops;
+    struct devfs_ops *prev, *next;
+};
+
+struct fs_mp_prv
+{
+    struct ramfs *rfs;
+    struct drv *drv;
+    struct devfs_ops *head, *tail;
+};
+
+extern const struct fs devfs;
+
+#endif
diff --git a/src/fs/devfs/src/CMakeLists.txt b/src/fs/devfs/src/CMakeLists.txt
new file mode 100644
index 0000000..7db8c9f
--- /dev/null
+++ b/src/fs/devfs/src/CMakeLists.txt
@@ -0,0 +1,34 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(devfs PRIVATE
+    close.c
+    flags.c
+    mount.c
+    mkdir.c
+    mknod.c
+    open.c
+    ops.c
+    stat.c
+    read.c
+    register.c
+    search.c
+    seek.c
+    status.c
+    unlink.c
+    update.c
+    write.c
+)
diff --git a/src/fs/devfs/src/close.c b/src/fs/devfs/src/close.c
new file mode 100644
index 0000000..0277b96
--- /dev/null
+++ b/src/fs/devfs/src/close.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <fs/fs.h>
+
+int devfs_close(const struct fs_close *const c, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/devfs/src/flags.c b/src/fs/devfs/src/flags.c
new file mode 100644
index 0000000..b99bb8c
--- /dev/null
+++ b/src/fs/devfs/src/flags.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+
+int devfs_flags(const union inode_result *const i)
+{
+    return i->memi->flags;
+}
diff --git a/src/fs/devfs/src/mkdir.c b/src/fs/devfs/src/mkdir.c
new file mode 100644
index 0000000..9aa74b3
--- /dev/null
+++ b/src/fs/devfs/src/mkdir.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+
+int devfs_mkdir(const struct fs_mkdir *m, const struct fs_mp *const mp,
+    const union inode_result *const i, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/devfs/src/mknod.c b/src/fs/devfs/src/mknod.c
new file mode 100644
index 0000000..8d13075
--- /dev/null
+++ b/src/fs/devfs/src/mknod.c
@@ -0,0 +1,54 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <fs/inode.h>
+#include <ramfs.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+int devfs_mknod(const char *const node, const mode_t mode, const dev_t dev,
+    const struct drv_event_ops *const ops, struct fs_mp_prv *const pr)
+{
+    struct devfs_ops *dops = NULL;
+    char *const nodedup = strdup(node);
+
+    if (!nodedup
+        || !(dops = malloc(sizeof *dops))
+        || ramfs_mknod(node, mode, dev, pr->rfs))
+        goto failure;
+
+    *dops = (const struct devfs_ops){.node = nodedup, .ops = *ops};
+
+    if (!pr->head)
+        pr->head = dops;
+    else
+    {
+        dops->prev = pr->tail;
+        pr->tail->next = dops;
+    }
+
+    pr->tail = dops;
+    return 0;
+
+failure:
+    free(dops);
+    return -1;
+}
diff --git a/src/fs/devfs/src/mount.c b/src/fs/devfs/src/mount.c
new file mode 100644
index 0000000..cff4779
--- /dev/null
+++ b/src/fs/devfs/src/mount.c
@@ -0,0 +1,59 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <drv/drv.h>
+#include <fs/fs.h>
+#include <ramfs.h>
+#include <stdlib.h>
+
+int devfs_mount(const struct fs_mount *const m, struct fs_ret *const r)
+{
+    struct drv *drv = NULL;
+    struct fs_mp_prv *p = NULL;
+    struct ramfs *const rfs = ramfs_mount(m, r);
+
+    if (!rfs || !(p = malloc(sizeof *p)))
+        goto failure;
+
+    const struct drv_event ev =
+    {
+        .status = devfs_status,
+        .args = p
+    };
+
+    if (!(drv = drv_init(&ev))
+        || fs_mountpoint(m->src, m->tgt, &devfs, devfs_update, p))
+        goto failure;
+
+    *p = (const struct fs_mp_prv)
+    {
+        .drv = drv,
+        .rfs = rfs
+    };
+
+    return 0;
+
+failure:
+    drv_free(drv);
+    free(p);
+    ramfs_free(rfs);
+    return -1;
+}
diff --git a/src/fs/devfs/src/open.c b/src/fs/devfs/src/open.c
new file mode 100644
index 0000000..b9bd3f7
--- /dev/null
+++ b/src/fs/devfs/src/open.c
@@ -0,0 +1,57 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/types.h>
+#include <devfs/ops.h>
+#include <fs/fs.h>
+#include <state.h>
+#include <stdlib.h>
+
+struct open
+{
+    struct fs_ret *pr, r;
+};
+
+static enum state done(void *const args)
+{
+    struct open *const op = args;
+
+    *op->pr = op->r;
+    free(op);
+    return STATE_AGAIN;
+}
+
+int devfs_open(const struct fs_open *const o, const struct fs_mp *const mp,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    struct open *const op = malloc(sizeof *op);
+
+    if (!op)
+        return -1;
+
+    *op = (const struct open){.pr = r, .r = *r};
+    *o->fd = (const struct fs_fd)
+    {
+        .inode = *inode,
+        .mp = mp
+    };
+
+    *r = (const struct fs_ret){.f = done, .args = op};
+    return 0;
+}
diff --git a/src/fs/devfs/src/ops.c b/src/fs/devfs/src/ops.c
new file mode 100644
index 0000000..1cd4a15
--- /dev/null
+++ b/src/fs/devfs/src/ops.c
@@ -0,0 +1,32 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <string.h>
+
+const struct devfs_ops *devfs_ops(const struct fs_mp_prv *const pr,
+    const char *const node)
+{
+    for (struct devfs_ops *o = pr->head; o; o = o->next)
+        if (!strcmp(o->node, node))
+            return o;
+
+    return NULL;
+}
diff --git a/src/fs/devfs/src/read.c b/src/fs/devfs/src/read.c
new file mode 100644
index 0000000..0bc19f0
--- /dev/null
+++ b/src/fs/devfs/src/read.c
@@ -0,0 +1,95 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <fs/fs.h>
+#include <state.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+struct read
+{
+    bool done;
+    struct fs_fd *fd;
+    struct fs_ret *pr, r;
+};
+
+static int done(const int error, void *const args)
+{
+    struct read *const re = args;
+
+    re->done = true;
+    return 0;
+}
+
+static enum state wait(void *const args)
+{
+    struct read *const re = args;
+
+    if (!re->done)
+        return STATE_AGAIN;
+
+    *re->pr = re->r;
+    free(re);
+    return STATE_AGAIN;
+}
+
+int devfs_read(const struct fs_read *const fr, struct fs_ret *const r)
+{
+    struct fs_fd *const fd = fr->fd;
+    const struct fs_mp *const mp = fd->mp;
+    const struct inode *const inode = fd->inode.memi;
+    const struct devfs_ops *const o = devfs_ops(mp->prv, inode->name);
+    struct read *const re = malloc(sizeof *re);
+
+    if (!re)
+        goto failure;
+    else if (!o)
+    {
+        errno = ENOENT;
+        goto failure;
+    }
+
+    *re = (const struct read)
+    {
+        .fd = fd,
+        .pr = r,
+        .r = *r
+    };
+
+    const struct drv_event_done d =
+    {
+        .f = done,
+        .args = re
+    };
+
+    const struct drv_event_ops *const ops = &o->ops;
+
+    if (ops->read(fr->buf, fr->n, &d, ops->args))
+        goto failure;
+
+    *r = (const struct fs_ret){.f = wait, .args = re};
+    return 0;
+
+failure:
+    free(re);
+    return -1;
+}
diff --git a/src/fs/devfs/src/register.c b/src/fs/devfs/src/register.c
new file mode 100644
index 0000000..46dcdb6
--- /dev/null
+++ b/src/fs/devfs/src/register.c
@@ -0,0 +1,44 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <fs/fs.h>
+
+const struct fs devfs =
+{
+    .type = "devfs",
+    .mount = devfs_mount,
+    .stat = devfs_stat,
+    .mkdir = devfs_mkdir,
+    .open = devfs_open,
+    .read = devfs_read,
+    .write = devfs_write,
+    .close = devfs_close,
+    .seek = devfs_seek,
+    .iops =
+    {
+        .search = devfs_search,
+        .flags = devfs_flags
+    }
+};
+
+int devfs_register(void)
+{
+    return fs_register(&devfs);
+}
diff --git a/src/fs/devfs/src/search.c b/src/fs/devfs/src/search.c
new file mode 100644
index 0000000..22a4e92
--- /dev/null
+++ b/src/fs/devfs/src/search.c
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <fs/fs.h>
+#include <ramfs.h>
+
+int devfs_search(const char *const path, const struct fs_mp *const mp,
+    union inode_result *const inode, struct fs_ret *const r)
+{
+    return ramfs_search(path, mp->prv->rfs, inode, r);
+}
diff --git a/src/fs/devfs/src/seek.c b/src/fs/devfs/src/seek.c
new file mode 100644
index 0000000..d955e70
--- /dev/null
+++ b/src/fs/devfs/src/seek.c
@@ -0,0 +1,98 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <fs/fs.h>
+#include <state.h>
+#include <errno.h>
+#include <stdlib.h>
+
+struct seek
+{
+    bool done;
+    struct fs_fd *fd;
+    struct fs_ret *pr, r;
+};
+
+static int done(int error, void *const args)
+{
+    struct seek *const s = args;
+    struct fs_fd *const fd = s->fd;
+
+    if (error)
+        fd->error = error;
+
+    s->done = true;
+    return 0;
+}
+
+static enum state wait(void *const args)
+{
+    struct seek *const s = args;
+
+    if (!s->done)
+        return STATE_AGAIN;
+
+    *s->pr = s->r;
+    free(s);
+    return STATE_AGAIN;
+}
+
+int devfs_seek(const struct fs_seek *const fs, struct fs_ret *const r)
+{
+    struct fs_fd *const fd = fs->fd;
+    const struct fs_mp *const mp = fd->mp;
+    const struct inode *const inode = fd->inode.memi;
+    const struct devfs_ops *const o = devfs_ops(mp->prv, inode->name);
+    struct seek *const s = malloc(sizeof *s);
+
+    if (!s)
+        goto failure;
+    else if (!o)
+    {
+        errno = ENOENT;
+        goto failure;
+    }
+
+    *s = (const struct seek)
+    {
+        .fd = fd,
+        .pr = r,
+        .r = *r
+    };
+
+    const struct drv_event_done d =
+    {
+        .f = done,
+        .args = s
+    };
+
+    const struct drv_event_ops *const ops = &o->ops;
+
+    if (ops->seek(fs->offset, &d, fd))
+        goto failure;
+
+    *r = (const struct fs_ret){.f = wait, .args = s};
+    return 0;
+
+failure:
+    free(s);
+    return -1;
+}
diff --git a/src/fs/devfs/src/stat.c b/src/fs/devfs/src/stat.c
new file mode 100644
index 0000000..dff4d3c
--- /dev/null
+++ b/src/fs/devfs/src/stat.c
@@ -0,0 +1,30 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <ramfs.h>
+
+int devfs_stat(const struct fs_stat *const s, const struct fs_mp *const mp,
+    const union inode_result *const i, struct fs_ret *const r)
+{
+    return ramfs_stat(s, mp->prv->rfs, i, r);
+}
diff --git a/src/fs/devfs/src/status.c b/src/fs/devfs/src/status.c
new file mode 100644
index 0000000..8a4d1e1
--- /dev/null
+++ b/src/fs/devfs/src/status.c
@@ -0,0 +1,30 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs/ops.h>
+#include <drv/event.h>
+#include <stdbool.h>
+
+int devfs_status(const char *const node, const struct drv_event_ops *const ops,
+    const bool available, void *const args)
+{
+    struct fs_mp_prv *const mp = args;
+
+    return available ? devfs_mknod(node, 0755, 0, ops, mp)
+        : devfs_unlink(node, mp);
+}
diff --git a/src/fs/devfs/src/unlink.c b/src/fs/devfs/src/unlink.c
new file mode 100644
index 0000000..d03fd68
--- /dev/null
+++ b/src/fs/devfs/src/unlink.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs/ops.h>
+#include <sys/types.h>
+#include <errno.h>
+
+int devfs_unlink(const char *const node, struct fs_mp_prv *const mp)
+{
+    return -1;
+}
diff --git a/src/fs/devfs/src/update.c b/src/fs/devfs/src/update.c
new file mode 100644
index 0000000..2a0a879
--- /dev/null
+++ b/src/fs/devfs/src/update.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/types.h>
+#include <devfs/ops.h>
+#include <drv/drv.h>
+
+int devfs_update(struct fs_mp_prv *const pr)
+{
+    return drv_update(pr->drv);
+}
diff --git a/src/fs/devfs/src/write.c b/src/fs/devfs/src/write.c
new file mode 100644
index 0000000..759751e
--- /dev/null
+++ b/src/fs/devfs/src/write.c
@@ -0,0 +1,95 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <devfs.h>
+#include <devfs/ops.h>
+#include <devfs/types.h>
+#include <fs/fs.h>
+#include <state.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+struct write
+{
+    bool done;
+    struct fs_fd *fd;
+    struct fs_ret *pr, r;
+};
+
+static int done(const int error, void *const args)
+{
+    struct write *const w = args;
+
+    w->done = true;
+    return 0;
+}
+
+static enum state wait(void *const args)
+{
+    struct write *const w = args;
+
+    if (!w->done)
+        return STATE_AGAIN;
+
+    *w->pr = w->r;
+    free(w);
+    return STATE_AGAIN;
+}
+
+int devfs_write(const struct fs_write *const fw, struct fs_ret *const r)
+{
+    struct fs_fd *const fd = fw->fd;
+    const struct fs_mp *const mp = fd->mp;
+    const struct inode *const inode = fd->inode.memi;
+    const struct devfs_ops *const o = devfs_ops(mp->prv, inode->name);
+    struct write *const w = malloc(sizeof *w);
+
+    if (!w)
+        goto failure;
+    else if (!o)
+    {
+        errno = ENOENT;
+        goto failure;
+    }
+
+    *w = (const struct write)
+    {
+        .fd = fd,
+        .pr = r,
+        .r = *r
+    };
+
+    const struct drv_event_done d =
+    {
+        .f = done,
+        .args = w
+    };
+
+    const struct drv_event_ops *const ops = &o->ops;
+
+    if (ops->write(fw->buf, fw->n, &d, ops->args))
+        goto failure;
+
+    *r = (const struct fs_ret){.f = wait, .args = w};
+    return 0;
+
+failure:
+    free(w);
+    return -1;
+}
diff --git a/src/fs/include/fs/fs.h b/src/fs/include/fs/fs.h
new file mode 100644
index 0000000..c66ce97
--- /dev/null
+++ b/src/fs/include/fs/fs.h
@@ -0,0 +1,159 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef FS_H
+#define FS_H
+
+#include <fs/inode.h>
+#include <state.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+struct fs_mountpoint;
+struct fs_mp_prv;
+struct fs_fd_prv;
+
+struct fs_stat
+{
+    const char *path;
+    struct stat *sb;
+    uid_t uid;
+    gid_t gid;
+};
+
+struct fs_mkdir
+{
+    const char *path;
+    mode_t mode;
+    uid_t uid;
+    gid_t gid;
+};
+
+struct fs_mount
+{
+    const char *src, *tgt;
+    mode_t mode;
+    uid_t uid;
+    gid_t gid;
+};
+
+struct fs_umount
+{
+    const char *tgt;
+    mode_t mode;
+    uid_t uid;
+    gid_t gid;
+};
+
+struct fs_open
+{
+    const char *path;
+    struct fs_fd *fd;
+    int flags;
+    mode_t mode;
+    uid_t uid;
+    gid_t gid;
+};
+
+struct fs_close
+{
+    struct fs_fd *fd;
+};
+
+struct fs_read
+{
+    struct fs_fd *fd;
+    void *buf;
+    size_t n;
+};
+
+struct fs_write
+{
+    struct fs_fd *fd;
+    const void *buf;
+    size_t n;
+};
+
+struct fs_seek
+{
+    struct fs_fd *fd;
+    long offset;
+};
+
+struct fs_ret
+{
+    enum state (*f)(void *args);
+    void *args;
+};
+
+enum
+{
+    FS_DEV_REQUIRED = 1
+};
+
+struct fs
+{
+    const char *type;
+    int flags;
+    int (*mount)(const struct fs_mount *, struct fs_ret *);
+    int (*umount)(const struct fs_umount *, struct fs_ret *);
+    int (*stat)(const struct fs_stat *, const struct fs_mp *,
+        const union inode_result *, struct fs_ret *);
+    int (*mkdir)(const struct fs_mkdir *, const struct fs_mp *,
+        const union inode_result *, struct fs_ret *);
+    int (*open)(const struct fs_open *, const struct fs_mp *,
+        const union inode_result *, struct fs_ret *);
+    int (*close)(const struct fs_close *, struct fs_ret *);
+    int (*read)(const struct fs_read *, struct fs_ret *);
+    int (*write)(const struct fs_write *, struct fs_ret *);
+    int (*seek)(const struct fs_seek *, struct fs_ret *);
+    struct inode_ops iops;
+};
+
+struct fs_mp
+{
+    const char *src, *tgt;
+    const struct fs *fs;
+    struct fs_mp_prv *prv;
+};
+
+struct fs_fd
+{
+    long offset;
+    int error;
+    const struct fs_mp *mp;
+    union inode_result inode;
+    struct fs_fd_prv *prv;
+};
+
+typedef int (*fs_update_fn)(struct fs_mp_prv *);
+
+int fs_register(const struct fs *fs);
+int fs_update(void);
+int fs_mountpoint(const char *src, const char *tgt, const struct fs *fs,
+    fs_update_fn fn, struct fs_mp_prv *pr);
+const struct fs *fs_from_type(const char *type);
+int fs_mp_from_path(const char *path, struct fs_mp *mp);
+struct fs_mp *fs_mps_from_path(const char *path, size_t *n);
+const char *fs_relpath(const char *path);
+char *fs_parent(const char *path);
+int fs_next(const char *path, char **next, size_t *i);
+
+#endif
diff --git a/src/fs/include/fs/inode.h b/src/fs/include/fs/inode.h
new file mode 100644
index 0000000..914564b
--- /dev/null
+++ b/src/fs/include/fs/inode.h
@@ -0,0 +1,79 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef FS_INODE_H
+#define FS_INODE_H
+
+#include <state.h>
+#include <sys/types.h>
+#include <time.h>
+
+struct fs;
+struct fs_mp;
+struct fs_ret;
+struct inode_prv;
+
+enum
+{
+    INODE_DIR = 1,
+    INODE_REGFILE = 1 << 1,
+    INODE_BLOCKDEV = 1 << 2,
+    INODE_MOUNTPOINT = 1 << 3,
+};
+
+struct inode
+{
+    char *name;
+    int flags;
+    ino_t ino;
+    mode_t mode;
+    uid_t uid;
+    gid_t gid;
+    struct timespec atim, mtim, ctim;
+    struct inode *parent, *child, *left, *right;
+    struct inode_prv *prv;
+};
+
+union inode_result
+{
+    struct inode cachei, *memi;
+};
+
+typedef int (*inode_search_done)(enum state state, const char *relpath,
+    const struct fs_mp *mp, const union inode_result *inode, void *args);
+
+struct inode_search
+{
+    const char *path;
+    inode_search_done done;
+    void *args;
+};
+
+struct inode_ops
+{
+    int (*search)(const char *path, const struct fs_mp *mp,
+        union inode_result *inode, struct fs_ret *r);
+    int (*reserve)(const struct inode *i, void *args, struct fs_ret *r);
+    int (*flags)(const union inode_result *i);
+};
+
+int inode_search(const struct inode_search *s, struct fs_ret *r);
+void inode_search_free(struct inode_search *s);
+void inode_free(struct inode *i);
+
+#endif
diff --git a/src/fs/iso9660/CMakeLists.txt b/src/fs/iso9660/CMakeLists.txt
new file mode 100644
index 0000000..67b56cf
--- /dev/null
+++ b/src/fs/iso9660/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(iso9660)
+add_subdirectory(src)
+target_include_directories(iso9660 PUBLIC include PRIVATE private_include)
+target_link_libraries(iso9660 PUBLIC c PRIVATE fs kprintf state)
diff --git a/src/fs/iso9660/include/iso9660.h b/src/fs/iso9660/include/iso9660.h
new file mode 100644
index 0000000..f5ee681
--- /dev/null
+++ b/src/fs/iso9660/include/iso9660.h
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ISO9660_H
+#define ISO9660_H
+
+int iso9660_register(void);
+
+#endif
diff --git a/src/fs/iso9660/private_include/iso9660/ops.h b/src/fs/iso9660/private_include/iso9660/ops.h
new file mode 100644
index 0000000..64cd798
--- /dev/null
+++ b/src/fs/iso9660/private_include/iso9660/ops.h
@@ -0,0 +1,39 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ISO9660_OPS_H
+#define ISO9660_OPS_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+
+int iso9660_mount(const struct fs_mount *m, struct fs_ret *r);
+int iso9660_mkdir(const struct fs_mkdir *m, const struct fs_mp *mp,
+    const union inode_result *i, struct fs_ret *r);
+int iso9660_open(const struct fs_open *o, const struct fs_mp *mp,
+    const union inode_result *i, struct fs_ret *r);
+int iso9660_read(const struct fs_read *r, struct fs_ret *ret);
+int iso9660_write(const struct fs_write *w, struct fs_ret *r);
+int iso9660_stat(const struct fs_stat *s, const struct fs_mp *mp,
+    const union inode_result *inode, struct fs_ret *r);
+int iso9660_seek(const struct fs_seek *s, struct fs_ret *r);
+int iso9660_close(const struct fs_close *c, struct fs_ret *r);
+int iso9660_search(const char *path, const struct fs_mp *prv,
+    union inode_result *inode, struct fs_ret *r);
+
+#endif
diff --git a/src/fs/iso9660/private_include/iso9660/types.h b/src/fs/iso9660/private_include/iso9660/types.h
new file mode 100644
index 0000000..89cd1d3
--- /dev/null
+++ b/src/fs/iso9660/private_include/iso9660/types.h
@@ -0,0 +1,34 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ISO9660_TYPES_H
+#define ISO9660_TYPES_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+
+struct fs_mp_prv
+{
+    int dummy;
+};
+
+enum {ISO9660_SECTOR_SZ = 2048};
+
+extern const struct fs iso9660;
+
+#endif
diff --git a/src/fs/iso9660/src/CMakeLists.txt b/src/fs/iso9660/src/CMakeLists.txt
new file mode 100644
index 0000000..97dd80b
--- /dev/null
+++ b/src/fs/iso9660/src/CMakeLists.txt
@@ -0,0 +1,28 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(iso9660 PRIVATE
+    close.c
+    mount.c
+    mkdir.c
+    open.c
+    stat.c
+    read.c
+    register.c
+    search.c
+    seek.c
+    write.c
+)
diff --git a/src/fs/iso9660/src/close.c b/src/fs/iso9660/src/close.c
new file mode 100644
index 0000000..dc80117
--- /dev/null
+++ b/src/fs/iso9660/src/close.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+
+int iso9660_close(const struct fs_close *const c, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/iso9660/src/mkdir.c b/src/fs/iso9660/src/mkdir.c
new file mode 100644
index 0000000..e3d91ce
--- /dev/null
+++ b/src/fs/iso9660/src/mkdir.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+
+int iso9660_mkdir(const struct fs_mkdir *const m, const struct fs_mp *const mp,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/iso9660/src/mount.c b/src/fs/iso9660/src/mount.c
new file mode 100644
index 0000000..aeddcc5
--- /dev/null
+++ b/src/fs/iso9660/src/mount.c
@@ -0,0 +1,196 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <iso9660/types.h>
+#include <fs/fs.h>
+#include <kprintf.h>
+#include <state.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct mount
+{
+    char *path, header[sizeof "CD001"];
+    struct fs_fd fd;
+    struct fs_ret *r;
+    struct fs_mount mount;
+    const struct fs_mp *mp;
+};
+
+static void free_mount(struct mount *const m)
+{
+    if (!m)
+        return;
+
+    const struct fs_close c = {.fd = &m->fd};
+
+    m->mp->fs->close(&c, m->r);
+    free(m->path);
+    free(m);
+}
+
+static enum state check_header(void *const args)
+{
+    struct mount *const m = args;
+    static const char header[] = {1, 'C', 'D', '0', '0', '1'};
+
+    if (memcmp(m->header, header, sizeof header))
+    {
+        kprintf("invalid header");
+        free_mount(m);
+        return STATE_FATAL;
+    }
+
+    free_mount(m);
+    return STATE_OK;
+}
+
+static enum state read_header(void *const args)
+{
+    struct mount *const m = args;
+    struct fs_fd *const fd = &m->fd;
+    const struct fs_read r =
+    {
+        .buf = m->header,
+        .n = sizeof m->header,
+        .fd = fd
+    };
+
+    if (fd->error)
+    {
+        errno = fd->error;
+        goto failure;
+    }
+
+    *m->r = (const struct fs_ret)
+    {
+        .f = check_header,
+        .args = m
+    };
+
+    if (m->mp->fs->read(&r, m->r))
+        goto failure;
+
+    return STATE_AGAIN;
+
+failure:
+    free_mount(m);
+    return STATE_FATAL;
+}
+
+static enum state seek_header(void *const args)
+{
+    struct mount *const m = args;
+    const struct fs_mp *const mp = m->mp;
+    const struct fs_seek s =
+    {
+        .fd = &m->fd,
+        .offset = 16 * ISO9660_SECTOR_SZ
+    };
+
+    *m->r = (const struct fs_ret)
+    {
+        .args = m,
+        .f = read_header
+    };
+
+    if (mp->fs->seek(&s, m->r))
+        goto failure;
+
+    return STATE_AGAIN;
+
+failure:
+    free_mount(m);
+    return STATE_FATAL;
+}
+
+static int search_done(const enum state state, const char *const relpath,
+    const struct fs_mp *const mp, const union inode_result *const inode,
+    void *const args)
+{
+    struct mount *const m = args;
+    const struct fs_mount *const fm = &m->mount;
+
+    if (!inode)
+    {
+        errno = ENOENT;
+        goto failure;
+    }
+
+    const struct fs_open o =
+    {
+        .fd = &m->fd,
+        .gid = fm->gid,
+        .uid = fm->uid,
+        .mode = fm->mode,
+        .path = relpath
+    };
+
+    *m->r = (const struct fs_ret)
+    {
+        .args = m,
+        .f = seek_header
+    };
+
+    if (mp->fs->open(&o, mp, inode, m->r))
+        goto failure;
+
+    m->mp = mp;
+    return 0;
+
+failure:
+    free_mount(m);
+    return -1;
+}
+
+int iso9660_mount(const struct fs_mount *const fm, struct fs_ret *const r)
+{
+    char *tgtdup = NULL;
+    struct mount *const m = malloc(sizeof *m);
+
+    if (!m || !(tgtdup = strdup(fm->tgt)))
+        goto failure;
+
+    *m = (const struct mount)
+    {
+        .path = tgtdup,
+        .mount = *fm,
+        .r = r
+    };
+
+    const struct inode_search s =
+    {
+        .args = m,
+        .path = fm->src,
+        .done = search_done
+    };
+
+    if (inode_search(&s, r))
+        goto failure;
+
+    return 0;
+
+failure:
+    free(tgtdup);
+    free(m);
+    return -1;
+}
diff --git a/src/fs/iso9660/src/open.c b/src/fs/iso9660/src/open.c
new file mode 100644
index 0000000..b7c78ef
--- /dev/null
+++ b/src/fs/iso9660/src/open.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+
+int iso9660_open(const struct fs_open *const o, const struct fs_mp *const mp,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/iso9660/src/read.c b/src/fs/iso9660/src/read.c
new file mode 100644
index 0000000..7a8569f
--- /dev/null
+++ b/src/fs/iso9660/src/read.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+#include <stddef.h>
+
+int iso9660_read(const struct fs_read *const r, struct fs_ret *const ret)
+{
+    return -1;
+}
diff --git a/src/fs/iso9660/src/register.c b/src/fs/iso9660/src/register.c
new file mode 100644
index 0000000..2b69651
--- /dev/null
+++ b/src/fs/iso9660/src/register.c
@@ -0,0 +1,44 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+
+const struct fs iso9660 =
+{
+    .type = "iso9660",
+    .flags = FS_DEV_REQUIRED,
+    .mount = iso9660_mount,
+    .stat = iso9660_stat,
+    .mkdir = iso9660_mkdir,
+    .open = iso9660_open,
+    .read = iso9660_read,
+    .write = iso9660_write,
+    .close = iso9660_close,
+    .seek = iso9660_seek,
+    .iops =
+    {
+        .search = iso9660_search
+    }
+};
+
+int iso9660_register(void)
+{
+    return fs_register(&iso9660);
+}
diff --git a/src/fs/iso9660/src/search.c b/src/fs/iso9660/src/search.c
new file mode 100644
index 0000000..c6d1208
--- /dev/null
+++ b/src/fs/iso9660/src/search.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+
+int iso9660_search(const char *const path, const struct fs_mp *const mp,
+    union inode_result *const inode, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/iso9660/src/seek.c b/src/fs/iso9660/src/seek.c
new file mode 100644
index 0000000..c78bb52
--- /dev/null
+++ b/src/fs/iso9660/src/seek.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <iso9660/types.h>
+#include <fs/fs.h>
+
+int iso9660_seek(const struct fs_seek *const s, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/iso9660/src/stat.c b/src/fs/iso9660/src/stat.c
new file mode 100644
index 0000000..e5905e4
--- /dev/null
+++ b/src/fs/iso9660/src/stat.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+#include <sys/stat.h>
+
+int iso9660_stat(const struct fs_stat *const s, const struct fs_mp *const mp,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/iso9660/src/write.c b/src/fs/iso9660/src/write.c
new file mode 100644
index 0000000..b7baa93
--- /dev/null
+++ b/src/fs/iso9660/src/write.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <iso9660.h>
+#include <iso9660/ops.h>
+#include <fs/fs.h>
+#include <errno.h>
+
+int iso9660_write(const struct fs_write *const w, struct fs_ret *const r)
+{
+    errno = EROFS;
+    return -1;
+}
diff --git a/src/fs/private_include/fs/private.h b/src/fs/private_include/fs/private.h
new file mode 100644
index 0000000..327ded3
--- /dev/null
+++ b/src/fs/private_include/fs/private.h
@@ -0,0 +1,63 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef FS_TYPES_H
+#define FS_TYPES_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <state.h>
+#include <sys/types.h>
+
+struct fs_fd_prv;
+
+struct fs_register
+{
+    const struct fs *fs;
+    struct fs_register *next;
+};
+
+struct fs_mountpoint
+{
+    char *src, *tgt;
+    const struct fs *fs;
+    struct fs_mp_prv *prv;
+    struct fs_mountpoint *next;
+    fs_update_fn update;
+};
+
+struct fs_add
+{
+    char *src, *tgt;
+    struct inode_search *search;
+    struct inode *inode;
+    mode_t mode;
+    const struct fs *fs;
+    enum state (*next)(struct fs_add *);
+};
+
+struct fs_fd
+{
+    long off;
+    struct fs_fd_prv *prv;
+};
+
+extern struct fs_register *fs_rhead, *fs_rtail;
+extern struct fs_mountpoint *fs_mphead, *fs_mptail;
+
+#endif
diff --git a/src/fs/private_include/fs/types.h b/src/fs/private_include/fs/types.h
new file mode 100644
index 0000000..fe1eb01
--- /dev/null
+++ b/src/fs/private_include/fs/types.h
@@ -0,0 +1,55 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef FS_TYPES_H
+#define FS_TYPES_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <state.h>
+#include <sys/types.h>
+
+struct fs_register
+{
+    const struct fs *fs;
+    struct fs_register *next;
+};
+
+struct fs_mountpoint
+{
+    char *src, *tgt;
+    const struct fs *fs;
+    struct fs_mp_prv *prv;
+    struct fs_mountpoint *next;
+    fs_update_fn update;
+};
+
+struct fs_add
+{
+    char *src, *tgt;
+    struct inode_search *search;
+    struct inode *inode;
+    mode_t mode;
+    const struct fs *fs;
+    enum state (*next)(struct fs_add *);
+};
+
+extern struct fs_register *fs_rhead, *fs_rtail;
+extern struct fs_mountpoint *fs_mphead, *fs_mptail;
+
+#endif
diff --git a/src/fs/ramfs/CMakeLists.txt b/src/fs/ramfs/CMakeLists.txt
new file mode 100644
index 0000000..9581c99
--- /dev/null
+++ b/src/fs/ramfs/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(ramfs)
+add_subdirectory(src)
+target_include_directories(ramfs PUBLIC include PRIVATE private_include)
+target_link_libraries(ramfs PUBLIC state c PRIVATE fs drv)
diff --git a/src/fs/ramfs/include/ramfs.h b/src/fs/ramfs/include/ramfs.h
new file mode 100644
index 0000000..36be39c
--- /dev/null
+++ b/src/fs/ramfs/include/ramfs.h
@@ -0,0 +1,43 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef RAMFS_H
+#define RAMFS_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stddef.h>
+
+struct ramfs *ramfs_mount(const struct fs_mount *m, struct fs_ret *r);
+int ramfs_mkdir(const struct fs_mkdir *m, struct ramfs *rfs,
+    const union inode_result *i, struct fs_ret *r);
+int ramfs_open(const struct fs_open *o, struct inode *i, struct fs_ret *r);
+int ramfs_read(const struct fs_read *r, struct fs_ret *ret);
+int ramfs_write(const struct fs_write *w, struct fs_ret *r);
+int ramfs_stat(const struct fs_stat *s, const struct ramfs *rfs,
+    const union inode_result *inode, struct fs_ret *r);
+int ramfs_close(const struct fs_close *c, struct fs_ret *r);
+int ramfs_search(const char *path, const struct ramfs *rfs,
+    union inode_result *inode, struct fs_ret *r);
+int ramfs_flags(const union inode_result *i);
+int ramfs_mknod(const char *node, mode_t mode, dev_t dev, struct ramfs *rfs);
+void ramfs_free(struct ramfs *rfs);
+
+#endif
diff --git a/src/fs/ramfs/private_include/ramfs/types.h b/src/fs/ramfs/private_include/ramfs/types.h
new file mode 100644
index 0000000..975ff9a
--- /dev/null
+++ b/src/fs/ramfs/private_include/ramfs/types.h
@@ -0,0 +1,31 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef RAMFS_TYPES_H
+#define RAMFS_TYPES_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+
+struct ramfs
+{
+    struct inode *root;
+    ino_t ino;
+};
+
+#endif
diff --git a/src/fs/ramfs/src/CMakeLists.txt b/src/fs/ramfs/src/CMakeLists.txt
new file mode 100644
index 0000000..904e22d
--- /dev/null
+++ b/src/fs/ramfs/src/CMakeLists.txt
@@ -0,0 +1,29 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(ramfs PRIVATE
+    close.c
+    free.c
+    flags.c
+    mount.c
+    mkdir.c
+    mknod.c
+    open.c
+    stat.c
+    read.c
+    search.c
+    write.c
+)
diff --git a/src/fs/ramfs/src/close.c b/src/fs/ramfs/src/close.c
new file mode 100644
index 0000000..9d85319
--- /dev/null
+++ b/src/fs/ramfs/src/close.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <fs/fs.h>
+
+int ramfs_close(const struct fs_close *const c, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/ramfs/src/flags.c b/src/fs/ramfs/src/flags.c
new file mode 100644
index 0000000..1453c5c
--- /dev/null
+++ b/src/fs/ramfs/src/flags.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <fs/inode.h>
+
+int ramfs_flags(const union inode_result *const i)
+{
+    return i->memi->flags;
+}
diff --git a/src/fs/ramfs/src/free.c b/src/fs/ramfs/src/free.c
new file mode 100644
index 0000000..39b9bc4
--- /dev/null
+++ b/src/fs/ramfs/src/free.c
@@ -0,0 +1,31 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <ramfs/types.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+void ramfs_free(struct ramfs *const r)
+{
+    if (!r)
+        return;
+
+    inode_free(r->root);
+    free(r);
+}
diff --git a/src/fs/ramfs/src/mkdir.c b/src/fs/ramfs/src/mkdir.c
new file mode 100644
index 0000000..fef39ef
--- /dev/null
+++ b/src/fs/ramfs/src/mkdir.c
@@ -0,0 +1,79 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <ramfs/types.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <state.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+static enum state done(void *const args)
+{
+    return STATE_OK;
+}
+
+int ramfs_mkdir(const struct fs_mkdir *const m, struct ramfs *const rfs,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    struct timespec ts;
+    struct inode *ni = NULL;
+    struct inode *const parent = inode->memi;
+    char *const name = strdup(m->path);
+
+    if (!name
+        || clock_gettime(CLOCK_REALTIME, &ts)
+        || !(ni = malloc(sizeof *ni)))
+        goto failure;
+
+    *ni = (const struct inode)
+    {
+        .name = name,
+        .mode = m->mode,
+        .uid = m->uid,
+        .gid = m->gid,
+        .flags = INODE_DIR,
+        .atim = ts,
+        .ctim = ts,
+        .mtim = ts,
+        .ino = rfs->ino++,
+        .parent = parent
+    };
+
+    if (!parent->child)
+        parent->child = ni;
+    else
+        for (struct inode *i = parent->child; i; i = i->right)
+            if (!i->right)
+            {
+                i->right = ni;
+                ni->left = i;
+                break;
+            }
+
+    parent->atim = parent->mtim = ts;
+    *r = (const struct fs_ret){.f = done};
+    return 0;
+
+failure:
+    free(ni);
+    free(name);
+    return -1;
+}
diff --git a/src/fs/ramfs/src/mknod.c b/src/fs/ramfs/src/mknod.c
new file mode 100644
index 0000000..2ad9fd7
--- /dev/null
+++ b/src/fs/ramfs/src/mknod.c
@@ -0,0 +1,87 @@
+
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <ramfs/types.h>
+#include <fs/inode.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+static struct inode *find(const char *const node, struct inode *const root)
+{
+    for (struct inode *c = root->child; c; c = c->right)
+        if (!strcmp(c->name, node))
+            return c;
+
+    return NULL;
+}
+
+int ramfs_mknod(const char *const node, const mode_t mode, const dev_t dev,
+    struct ramfs *const rfs)
+{
+    struct inode *const r = rfs->root,
+        *const inode = find(node, r),
+        *newinode = NULL;
+    char *nodedup = NULL;
+    struct timespec ts;
+
+    if (inode)
+    {
+        errno = EEXIST;
+        goto failure;
+    }
+    else if (clock_gettime(CLOCK_REALTIME, &ts)
+        || !(nodedup = strdup(node))
+        || !(newinode = malloc(sizeof *newinode)))
+        goto failure;
+
+    *newinode = (const struct inode)
+    {
+        .atim = ts,
+        .ctim = ts,
+        .mtim = ts,
+        .flags = INODE_BLOCKDEV,
+        .mode = mode,
+        .parent = rfs->root,
+        .name = nodedup
+    };
+
+    if (!r->child)
+        r->child = newinode;
+    else
+        for (struct inode *c = r->child; c; c = c->right)
+            if (!c->right)
+            {
+                c->right = newinode;
+                newinode->left = c;
+                break;
+            }
+
+    r->atim = r->mtim = ts;
+    return 0;
+
+failure:
+    free(nodedup);
+    free(newinode);
+    return -1;
+}
diff --git a/src/fs/ramfs/src/mount.c b/src/fs/ramfs/src/mount.c
new file mode 100644
index 0000000..09c4685
--- /dev/null
+++ b/src/fs/ramfs/src/mount.c
@@ -0,0 +1,69 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <ramfs/types.h>
+#include <fs/fs.h>
+#include <state.h>
+#include <sys/types.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+static enum state mount(void *const args)
+{
+    return STATE_OK;
+}
+
+struct ramfs *ramfs_mount(const struct fs_mount *const m,
+    struct fs_ret *const r)
+{
+    struct ramfs *ret = NULL;
+    struct timespec ts;
+    char *const name = strdup("/");
+    struct inode *root = NULL;
+
+    if (!name
+        || clock_gettime(CLOCK_REALTIME, &ts)
+        || !(root = malloc(sizeof *root))
+        || !(ret = malloc(sizeof *ret)))
+        goto failure;
+
+    *root = (const struct inode)
+    {
+        .name = name,
+        .mode = m->mode,
+        .uid = m->uid,
+        .gid = m->gid,
+        .atim = ts,
+        .mtim = ts,
+        .ctim = ts
+    };
+
+    *ret = (const struct ramfs){.root = root};
+    *r = (const struct fs_ret){.f = mount};
+    ret->ino++;
+    return ret;
+
+failure:
+    free(root);
+    free(ret);
+    free(name);
+    return NULL;
+}
diff --git a/src/fs/ramfs/src/open.c b/src/fs/ramfs/src/open.c
new file mode 100644
index 0000000..1140b58
--- /dev/null
+++ b/src/fs/ramfs/src/open.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <fs/fs.h>
+
+int ramfs_open(const struct fs_open *const o,struct inode *const i,
+    struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/ramfs/src/read.c b/src/fs/ramfs/src/read.c
new file mode 100644
index 0000000..77d6287
--- /dev/null
+++ b/src/fs/ramfs/src/read.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <fs/fs.h>
+#include <stddef.h>
+
+int ramfs_read(const struct fs_read *const r, struct fs_ret *const ret)
+{
+    return -1;
+}
diff --git a/src/fs/ramfs/src/search.c b/src/fs/ramfs/src/search.c
new file mode 100644
index 0000000..2c8f35a
--- /dev/null
+++ b/src/fs/ramfs/src/search.c
@@ -0,0 +1,150 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <ramfs/types.h>
+#include <fs/fs.h>
+#include <state.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct search
+{
+    union inode_result *inode;
+    const struct ramfs *rfs;
+    struct fs_ret r, *pr;
+    const char *path;
+};
+
+static void free_search(struct search *const s)
+{
+    free(s);
+}
+
+static int find_node(const char *const path, struct inode **const out,
+    size_t *const i)
+{
+    int ret = -1;
+    char *node;
+    struct inode *volatile const inode = *out;
+
+    if (fs_next(path, &node, i))
+        return -1;
+    else if (!strcmp(inode->name, node))
+    {
+        if (*i >= strlen(path))
+        {
+            free(node);
+            return 1;
+        }
+
+        *out = inode->child;
+    }
+    else
+    {
+        bool found = false;
+
+        for (struct inode *in = inode->right; in; in = in->right)
+            if (!strcmp(in->name, node))
+            {
+                if (*i >= strlen(path))
+                {
+                    *out = in;
+                    free(node);
+                    return 1;
+                }
+
+                *out = in->child;
+                found = true;
+                break;
+            }
+
+        if (!found)
+            goto end;
+    }
+
+    ret = 0;
+
+end:
+    if (ret == -1)
+    {
+        volatile int a = 0;
+
+        a++;
+    }
+
+    free(node);
+    return ret;
+}
+
+static enum state search(void *const args)
+{
+    enum state ret = STATE_FATAL;
+    struct search *const s = args;
+    struct inode *inode = s->rfs->root;
+    size_t i = 0;
+
+    for (;;)
+    {
+        const int n = find_node(s->path, &inode, &i);
+
+        if (n < 0)
+            goto end;
+        else if (n > 0)
+            break;
+    }
+
+    s->inode->memi = inode;
+    *s->pr = s->r;
+    ret = STATE_AGAIN;
+
+end:
+    free_search(s);
+    return ret;
+}
+
+int ramfs_search(const char *const path, const struct ramfs *const rfs,
+    union inode_result *const inode, struct fs_ret *const r)
+{
+    struct search *s = malloc(sizeof *s);
+
+    if (!s)
+        goto failure;
+
+    *s = (const struct search)
+    {
+        .inode = inode,
+        .path = path,
+        .rfs = rfs,
+        .r = *r,
+        .pr = r
+    };
+
+    *r = (const struct fs_ret)
+    {
+        .f = search,
+        .args = s
+    };
+
+    return 0;
+
+failure:
+    free(s);
+    return -1;
+}
diff --git a/src/fs/ramfs/src/stat.c b/src/fs/ramfs/src/stat.c
new file mode 100644
index 0000000..c5498d9
--- /dev/null
+++ b/src/fs/ramfs/src/stat.c
@@ -0,0 +1,52 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <fs/fs.h>
+#include <state.h>
+#include <sys/stat.h>
+
+static enum state done(void *const args)
+{
+    return STATE_OK;
+}
+
+int ramfs_stat(const struct fs_stat *const s, const struct ramfs *const rfs,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    const struct inode *const i = inode->memi;
+
+    *s->sb = (const struct stat)
+    {
+        .st_atim = i->atim,
+        .st_ctim = i->ctim,
+        .st_mtim = i->mtim,
+        .st_blksize = 1,
+        .st_ino = i->ino,
+        .st_uid = i->uid,
+        .st_gid = i->gid,
+        .st_mode = i->mode
+    };
+
+    *r = (const struct fs_ret)
+    {
+        .f = done
+    };
+
+    return 0;
+}
diff --git a/src/fs/ramfs/src/write.c b/src/fs/ramfs/src/write.c
new file mode 100644
index 0000000..94b18cc
--- /dev/null
+++ b/src/fs/ramfs/src/write.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ramfs.h>
+#include <fs/fs.h>
+#include <stddef.h>
+
+int ramfs_write(const struct fs_write *const w, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/rootfs/CMakeLists.txt b/src/fs/rootfs/CMakeLists.txt
new file mode 100644
index 0000000..b32fd82
--- /dev/null
+++ b/src/fs/rootfs/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(rootfs)
+add_subdirectory(src)
+target_include_directories(rootfs PUBLIC include PRIVATE private_include)
+target_link_libraries(rootfs PUBLIC state c PRIVATE fs ramfs)
diff --git a/src/fs/rootfs/include/rootfs.h b/src/fs/rootfs/include/rootfs.h
new file mode 100644
index 0000000..c218b1c
--- /dev/null
+++ b/src/fs/rootfs/include/rootfs.h
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ROOTFS_H
+#define ROOTFS_H
+
+int rootfs_register(void);
+
+#endif
diff --git a/src/fs/rootfs/private_include/rootfs/ops.h b/src/fs/rootfs/private_include/rootfs/ops.h
new file mode 100644
index 0000000..356e740
--- /dev/null
+++ b/src/fs/rootfs/private_include/rootfs/ops.h
@@ -0,0 +1,42 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ROOTFS_OPS_H
+#define ROOTFS_OPS_H
+
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stddef.h>
+
+int rootfs_mount(const struct fs_mount *m, struct fs_ret *r);
+int rootfs_mkdir(const struct fs_mkdir *m, const struct fs_mp *mp,
+    const union inode_result *i, struct fs_ret *r);
+int rootfs_open(const struct fs_open *o, const struct fs_mp *mp,
+    const union inode_result *i, struct fs_ret *r);
+int rootfs_read(const struct fs_read *r, struct fs_ret *ret);
+int rootfs_write(const struct fs_write *w, struct fs_ret *r);
+int rootfs_stat(const struct fs_stat *s, const struct fs_mp *mp,
+    const union inode_result *inode, struct fs_ret *r);
+int rootfs_close(const struct fs_close *c, struct fs_ret *r);
+int rootfs_search(const char *path, const struct fs_mp *mp,
+    union inode_result *inode, struct fs_ret *r);
+int rootfs_flags(const union inode_result *i);
+
+#endif
diff --git a/src/fs/rootfs/private_include/rootfs/types.h b/src/fs/rootfs/private_include/rootfs/types.h
new file mode 100644
index 0000000..1ce40aa
--- /dev/null
+++ b/src/fs/rootfs/private_include/rootfs/types.h
@@ -0,0 +1,32 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ROOTFS_TYPES_H
+#define ROOTFS_TYPES_H
+
+#include <fs/fs.h>
+#include <ramfs.h>
+
+struct fs_mp_prv
+{
+    struct ramfs *rfs;
+};
+
+extern const struct fs rootfs;
+
+#endif
diff --git a/src/fs/rootfs/src/CMakeLists.txt b/src/fs/rootfs/src/CMakeLists.txt
new file mode 100644
index 0000000..b7fdcdb
--- /dev/null
+++ b/src/fs/rootfs/src/CMakeLists.txt
@@ -0,0 +1,28 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(rootfs PRIVATE
+    close.c
+    flags.c
+    mount.c
+    mkdir.c
+    open.c
+    stat.c
+    read.c
+    register.c
+    search.c
+    write.c
+)
diff --git a/src/fs/rootfs/src/close.c b/src/fs/rootfs/src/close.c
new file mode 100644
index 0000000..51a7c45
--- /dev/null
+++ b/src/fs/rootfs/src/close.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <fs/fs.h>
+
+int rootfs_close(const struct fs_close *const c, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/rootfs/src/flags.c b/src/fs/rootfs/src/flags.c
new file mode 100644
index 0000000..06496bb
--- /dev/null
+++ b/src/fs/rootfs/src/flags.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <rootfs/ops.h>
+#include <fs/inode.h>
+
+int rootfs_flags(const union inode_result *const i)
+{
+    return i->memi->flags;
+}
diff --git a/src/fs/rootfs/src/mkdir.c b/src/fs/rootfs/src/mkdir.c
new file mode 100644
index 0000000..7136477
--- /dev/null
+++ b/src/fs/rootfs/src/mkdir.c
@@ -0,0 +1,30 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <rootfs/ops.h>
+#include <rootfs/types.h>
+#include <fs/fs.h>
+#include <fs/inode.h>
+#include <ramfs.h>
+
+int rootfs_mkdir(const struct fs_mkdir *const m, const struct fs_mp *const mp,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    return ramfs_mkdir(m, mp->prv->rfs, inode, r);
+}
diff --git a/src/fs/rootfs/src/mount.c b/src/fs/rootfs/src/mount.c
new file mode 100644
index 0000000..f421918
--- /dev/null
+++ b/src/fs/rootfs/src/mount.c
@@ -0,0 +1,42 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <rootfs/types.h>
+#include <ramfs.h>
+#include <fs/fs.h>
+#include <stdlib.h>
+
+int rootfs_mount(const struct fs_mount *const m, struct fs_ret *const r)
+{
+    struct ramfs *rfs = NULL;
+    struct fs_mp_prv *const p = malloc(sizeof *p);
+
+    if (!p
+        || !(rfs = ramfs_mount(m, r))
+        || fs_mountpoint(m->src, m->tgt, &rootfs, NULL, p))
+        goto failure;
+
+    *p = (const struct fs_mp_prv){.rfs = rfs};
+    return 0;
+
+failure:
+    ramfs_free(rfs);
+    free(p);
+    return -1;
+}
diff --git a/src/fs/rootfs/src/open.c b/src/fs/rootfs/src/open.c
new file mode 100644
index 0000000..6fea301
--- /dev/null
+++ b/src/fs/rootfs/src/open.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <rootfs/ops.h>
+#include <fs/fs.h>
+
+int rootfs_open(const struct fs_open *const o, const struct fs_mp *const mp,
+    const union inode_result *const i, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/rootfs/src/read.c b/src/fs/rootfs/src/read.c
new file mode 100644
index 0000000..d2cb757
--- /dev/null
+++ b/src/fs/rootfs/src/read.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <fs/fs.h>
+#include <stddef.h>
+
+int rootfs_read(const struct fs_read *const r, struct fs_ret *const ret)
+{
+    return -1;
+}
diff --git a/src/fs/rootfs/src/register.c b/src/fs/rootfs/src/register.c
new file mode 100644
index 0000000..e578cf7
--- /dev/null
+++ b/src/fs/rootfs/src/register.c
@@ -0,0 +1,43 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <rootfs/ops.h>
+#include <fs/fs.h>
+
+const struct fs rootfs =
+{
+    .type = "rootfs",
+    .mount = rootfs_mount,
+    .stat = rootfs_stat,
+    .mkdir = rootfs_mkdir,
+    .open = rootfs_open,
+    .read = rootfs_read,
+    .write = rootfs_write,
+    .close = rootfs_close,
+    .iops =
+    {
+        .search = rootfs_search,
+        .flags = rootfs_flags
+    }
+};
+
+int rootfs_register(void)
+{
+    return fs_register(&rootfs);
+}
diff --git a/src/fs/rootfs/src/search.c b/src/fs/rootfs/src/search.c
new file mode 100644
index 0000000..3675f0a
--- /dev/null
+++ b/src/fs/rootfs/src/search.c
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <rootfs/ops.h>
+#include <rootfs/types.h>
+#include <fs/fs.h>
+#include <ramfs.h>
+
+int rootfs_search(const char *const path, const struct fs_mp *const mp,
+    union inode_result *const inode, struct fs_ret *const r)
+{
+    return ramfs_search(path, mp->prv->rfs, inode, r);
+}
diff --git a/src/fs/rootfs/src/stat.c b/src/fs/rootfs/src/stat.c
new file mode 100644
index 0000000..2eff55c
--- /dev/null
+++ b/src/fs/rootfs/src/stat.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <rootfs/ops.h>
+#include <fs/fs.h>
+#include <sys/stat.h>
+
+int rootfs_stat(const struct fs_stat *const s, const struct fs_mp *const mp,
+    const union inode_result *const inode, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/rootfs/src/write.c b/src/fs/rootfs/src/write.c
new file mode 100644
index 0000000..53b9704
--- /dev/null
+++ b/src/fs/rootfs/src/write.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <rootfs.h>
+#include <fs/fs.h>
+#include <stddef.h>
+
+int rootfs_write(const struct fs_write *const w, struct fs_ret *const r)
+{
+    return -1;
+}
diff --git a/src/fs/src/CMakeLists.txt b/src/fs/src/CMakeLists.txt
new file mode 100644
index 0000000..7f2c7a5
--- /dev/null
+++ b/src/fs/src/CMakeLists.txt
@@ -0,0 +1,30 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(fs PRIVATE
+    from_type.c
+    headtail.c
+    mountpoint.c
+    mp_from_path.c
+    mps_from_path.c
+    parent.c
+    register.c
+    relpath.c
+    update.c
+    next.c
+)
+
+add_subdirectory(inode)
diff --git a/src/fs/src/from_type.c b/src/fs/src/from_type.c
new file mode 100644
index 0000000..b836cdd
--- /dev/null
+++ b/src/fs/src/from_type.c
@@ -0,0 +1,36 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+const struct fs *fs_from_type(const char *const type)
+{
+    for (const struct fs_register *r = fs_rhead; r; r = r->next)
+    {
+        const struct fs *const fs = r->fs;
+
+        if (!strcmp(type, fs->type))
+            return fs;
+    }
+
+    return NULL;
+}
diff --git a/src/fs/src/headtail.c b/src/fs/src/headtail.c
new file mode 100644
index 0000000..f5eaf79
--- /dev/null
+++ b/src/fs/src/headtail.c
@@ -0,0 +1,22 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/types.h>
+
+struct fs_register *fs_rhead, *fs_rtail;
+struct fs_mountpoint *fs_mphead, *fs_mptail;
diff --git a/src/fs/src/inode/CMakeLists.txt b/src/fs/src/inode/CMakeLists.txt
new file mode 100644
index 0000000..1b0e0fd
--- /dev/null
+++ b/src/fs/src/inode/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(fs PRIVATE
+    free.c
+    search.c
+)
diff --git a/src/fs/src/inode/free.c b/src/fs/src/inode/free.c
new file mode 100644
index 0000000..0ff18f2
--- /dev/null
+++ b/src/fs/src/inode/free.c
@@ -0,0 +1,31 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/inode.h>
+#include <stdlib.h>
+
+void inode_free(struct inode *const i)
+{
+    if (i)
+    {
+        inode_free(i->child);
+        free(i->name);
+    }
+
+    free(i);
+}
diff --git a/src/fs/src/inode/search.c b/src/fs/src/inode/search.c
new file mode 100644
index 0000000..09b38a1
--- /dev/null
+++ b/src/fs/src/inode/search.c
@@ -0,0 +1,121 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/inode.h>
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <state.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct search
+{
+    struct fs_mp *mp;
+    size_t n, mp_i;
+    struct fs_ret *r;
+    union inode_result inode;
+    struct inode_search search;
+};
+
+static void free_search(struct search *const s)
+{
+    free(s);
+}
+
+static enum state search_mp(struct search *const s)
+{
+    const struct inode_search *const is = &s->search;
+    const struct fs_mp *const cur = &s->mp[s->mp_i],
+        *const next = s->mp_i + 1 < s->n ?
+            &s->mp[s->mp_i + 1] : NULL;
+    const struct fs *const fs = cur->fs;
+    const char *relpath = next ? next->tgt : is->path;
+
+    for (size_t i = 0; i < s->mp_i; i++)
+        relpath += strlen(s->mp[s->mp_i].tgt);
+
+    if (fs && fs->iops.search(relpath, cur, &s->inode, s->r))
+        return STATE_FATAL;
+
+    s->mp_i++;
+    return STATE_AGAIN;
+}
+
+static enum state search(void *const args)
+{
+    struct search *const s = args;
+    const struct inode_search *const is = &s->search;
+
+    if (!s->mp)
+    {
+        const int ret = is->done(STATE_FATAL, NULL, NULL, NULL, is->args);
+
+        free_search(s);
+        return ret ? STATE_FATAL : STATE_AGAIN;
+    }
+    else if (s->mp_i < s->n)
+        return search_mp(s);
+    else
+    {
+        const char *relpath = is->path;
+
+        for (size_t i = 0; i < s->n; i++)
+            relpath += strlen(s->mp[i].tgt);
+
+        const int ret = is->done(STATE_OK, relpath, &s->mp[s->n - 1],
+            &s->inode, is->args);
+
+        free_search(s);
+        return ret ? STATE_FATAL : STATE_AGAIN;
+    }
+
+    return STATE_FATAL;
+}
+
+int inode_search(const struct inode_search *const is, struct fs_ret *const r)
+{
+    struct search *s = NULL;
+    size_t n;
+    /* Do not check for errors yet. */
+    struct fs_mp *const mp = fs_mps_from_path(is->path, &n);
+
+    if (!(s = malloc(sizeof *s)))
+        goto failure;
+
+    *s = (const struct search)
+    {
+        .search = *is,
+        .mp = mp,
+        .n = n,
+        .r = r
+    };
+
+    *r = (const struct fs_ret)
+    {
+        .f = search,
+        .args = s
+    };
+
+    return 0;
+
+failure:
+    free(s);
+    free(mp);
+    return -1;
+}
diff --git a/src/fs/src/mountpoint.c b/src/fs/src/mountpoint.c
new file mode 100644
index 0000000..6ae5a0e
--- /dev/null
+++ b/src/fs/src/mountpoint.c
@@ -0,0 +1,60 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <stdlib.h>
+#include <string.h>
+
+int fs_mountpoint(const char *const src, const char *const tgt,
+    const struct fs *const fs, const fs_update_fn fn,
+    struct fs_mp_prv *const pr)
+{
+    struct fs_mountpoint *m = NULL;
+    char *srcdup = NULL, *const tgtdup = strdup(tgt);
+
+    if (!tgtdup)
+        goto failure;
+    else if (src && !(srcdup = strdup(src)))
+        goto failure;
+    else if (!(m = malloc(sizeof *m)))
+        goto failure;
+
+    *m = (const struct fs_mountpoint)
+    {
+        .src = srcdup,
+        .tgt = tgtdup,
+        .update = fn,
+        .fs = fs,
+        .prv = pr
+    };
+
+    if (!fs_mphead)
+        fs_mphead = m;
+    else if (fs_mptail)
+        fs_mptail->next = m;
+
+    fs_mptail = m;
+    return 0;
+
+failure:
+    free(srcdup);
+    free(tgtdup);
+    free(m);
+    return -1;
+}
diff --git a/src/fs/src/mp_from_path.c b/src/fs/src/mp_from_path.c
new file mode 100644
index 0000000..5e69ea6
--- /dev/null
+++ b/src/fs/src/mp_from_path.c
@@ -0,0 +1,40 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <string.h>
+
+int fs_mp_from_path(const char *const path, struct fs_mp *const mp)
+{
+    for (const struct fs_mountpoint *p = fs_mphead; p; p = p->next)
+        if (!strcmp(path, p->tgt))
+        {
+            *mp = (const struct fs_mp)
+            {
+                .fs = p->fs,
+                .prv = p->prv,
+                .src = p->src,
+                .tgt= p->tgt
+            };
+
+            return 0;
+        }
+
+    return -1;
+}
diff --git a/src/fs/src/mps_from_path.c b/src/fs/src/mps_from_path.c
new file mode 100644
index 0000000..a3d5510
--- /dev/null
+++ b/src/fs/src/mps_from_path.c
@@ -0,0 +1,89 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+static struct fs_mp *find(const char *const path, size_t *const out)
+{
+    struct fs_mp *ret = NULL;
+    size_t n = 0;
+
+    for (const struct fs_mountpoint *p = fs_mphead; p; p = p->next)
+    {
+        const size_t len = strlen(p->tgt);
+
+        if (!strncmp(p->tgt, path, len))
+        {
+            const size_t sz = n + 1;
+            struct fs_mp *const m = realloc(ret, sz * sizeof *m);
+
+            if (!m)
+                goto failure;
+
+            m[n++] = (const struct fs_mp)
+            {
+                .fs = p->fs,
+                .prv = p->prv,
+                .src = p->src,
+                .tgt = p->tgt
+            };
+
+            ret = m;
+        }
+    }
+
+    *out = n;
+    return ret;
+
+failure:
+    free(ret);
+    return NULL;
+}
+
+static void sort(struct fs_mp *const m, const size_t n)
+{
+    for (size_t i = 1; i < n; i++)
+    {
+        struct fs_mp am = m[i];
+        const size_t len = strlen(am.tgt);
+        size_t j = i;
+
+        while (j && len < strlen(m[j - 1].tgt))
+        {
+            m[j] = m [j - 1];
+            j--;
+        }
+
+        m[j] = am;
+    }
+}
+
+struct fs_mp *fs_mps_from_path(const char *const path, size_t *const n)
+{
+    struct fs_mp *const ret = find(path, n);
+
+    if (!ret)
+        return NULL;
+
+    sort(ret, *n);
+    return ret;
+}
diff --git a/src/fs/src/next.c b/src/fs/src/next.c
new file mode 100644
index 0000000..dac2352
--- /dev/null
+++ b/src/fs/src/next.c
@@ -0,0 +1,59 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+int fs_next(const char *const path, char **const out, size_t *const i)
+{
+    char *next = NULL;
+
+    if (*i >= strlen(path))
+        goto failure;
+
+    const char *const s = &path[*i];
+
+    if (*s == '/')
+    {
+        if (!(next = strdup("/")))
+            goto failure;
+
+        (*i)++;
+        *out = next;
+        return 0;
+    }
+
+    const char *sep = strchr(s, '/');
+    next = sep ? strndup(s, sep - s) : strdup(s);
+
+    if (!next)
+        goto failure;
+    else if (sep)
+        while (*sep && *sep == '/')
+            sep++;
+
+    *i += sep ? sep - s : strlen(s);
+    *out = next;
+    return 0;
+
+failure:
+    free(next);
+    return -1;
+}
diff --git a/src/fs/src/parent.c b/src/fs/src/parent.c
new file mode 100644
index 0000000..34ed0ab
--- /dev/null
+++ b/src/fs/src/parent.c
@@ -0,0 +1,33 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *fs_parent(const char *const path)
+{
+    char *ret = NULL;
+    const char *const sep = strrchr(path, '/');
+
+    if (!sep || !(ret = strndup(path, sep - path + 1)))
+        return NULL;
+
+    return ret;
+}
diff --git a/src/fs/src/register.c b/src/fs/src/register.c
new file mode 100644
index 0000000..a503d2a
--- /dev/null
+++ b/src/fs/src/register.c
@@ -0,0 +1,42 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <stdlib.h>
+
+int fs_register(const struct fs *const fs)
+{
+    struct fs_register *const r = malloc(sizeof *r);
+
+    if (!r)
+        return -1;
+    else if (!fs_rhead)
+        fs_rhead = r;
+    else if (fs_rtail)
+        fs_rtail->next = r;
+
+    fs_rtail = r;
+
+    *r = (const struct fs_register)
+    {
+        .fs = fs
+    };
+
+    return 0;
+}
diff --git a/src/fs/src/relpath.c b/src/fs/src/relpath.c
new file mode 100644
index 0000000..e7414c2
--- /dev/null
+++ b/src/fs/src/relpath.c
@@ -0,0 +1,43 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <string.h>
+
+const char *fs_relpath(const char *const path)
+{
+    size_t lastn = 0;
+    const struct fs_mountpoint *mp = NULL;
+
+    for (const struct fs_mountpoint *m = fs_mphead; m; m = m->next)
+    {
+        const size_t n = strlen(m->tgt);
+
+        if (!strncmp(m->tgt, path, n) && lastn < n)
+        {
+            lastn = n;
+            mp = m;
+        }
+    }
+
+    if (!mp)
+        return NULL;
+
+    return path + strlen(mp->tgt);
+}
diff --git a/src/fs/src/update.c b/src/fs/src/update.c
new file mode 100644
index 0000000..5f47eb3
--- /dev/null
+++ b/src/fs/src/update.c
@@ -0,0 +1,30 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <fs/fs.h>
+#include <fs/types.h>
+#include <stddef.h>
+
+int fs_update(void)
+{
+    for (const struct fs_mountpoint *m = fs_mphead; m; m = m->next)
+        if (m->update && m->update(m->prv))
+            return -1;
+
+    return 0;
+}
diff --git a/src/gfx/CMakeLists.txt b/src/gfx/CMakeLists.txt
new file mode 100644
index 0000000..acb07d2
--- /dev/null
+++ b/src/gfx/CMakeLists.txt
@@ -0,0 +1,25 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(gfx)
+add_subdirectory(src)
+target_include_directories(gfx PUBLIC include)
+
+if(PS1_BUILD)
+    add_subdirectory(ps1)
+elseif(SDL1_2_BUILD)
+    add_subdirectory(sdl-1.2)
+endif()
diff --git a/src/gfx/include/gfx/gfx.h b/src/gfx/include/gfx/gfx.h
new file mode 100644
index 0000000..95c602a
--- /dev/null
+++ b/src/gfx/include/gfx/gfx.h
@@ -0,0 +1,48 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef GFX_H
+#define GFX_H
+
+#include <gfx/port.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+int gfx_init(void);
+int gfx_draw(void);
+bool gfx_ready(void);
+int gfx_toggle_fullscreen(void);
+int gfx_set_fullscreen(short w, short h);
+bool gfx_fullscreen_available(void);
+bool gfx_fullscreen(void);
+int gfx_display_size(short *w, short *h);
+
+void gfx_rect_init(struct gfx_rect *r);
+void semitrans_rect_init(struct gfx_rect *r);
+void stp_4line_init(struct stp_4line *l);
+void quad_sort(struct quad *q);
+void gfx_rect_sort(struct gfx_rect *r);
+void stp_4line_sort(struct stp_4line *l);
+int sprite_from_fp(struct gfx_sprite *s, FILE *f);
+int quad_from_sprite(const struct gfx_sprite *s, struct quad *q);
+bool gfx_inside_drawenv(short x, short y, short w, short h);
+void gfx_deinit(void);
+
+extern int screen_w, screen_h;
+
+#endif /* GFX_H */
diff --git a/src/gfx/include/gfx/sprite.h b/src/gfx/include/gfx/sprite.h
new file mode 100644
index 0000000..9746524
--- /dev/null
+++ b/src/gfx/include/gfx/sprite.h
@@ -0,0 +1,32 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef GFX_SPRITE_H
+#define GFX_SPRITE_H
+
+#include <gfx/port.h>
+#include <stddef.h>
+
+typedef int (*gfx_read)(void *buf, size_t n, void *args);
+
+int gfx_sprite_load(struct gfx_sprite *s, gfx_read r, void *args);
+int gfx_sprite_sort(struct gfx_sprite *s);
+int gfx_sprite_clone(const struct gfx_sprite *src, struct gfx_sprite *dst);
+void gfx_sprite_free(struct gfx_sprite *s);
+
+#endif
diff --git a/src/gfx/ps1/CMakeLists.txt b/src/gfx/ps1/CMakeLists.txt
new file mode 100644
index 0000000..1de20a7
--- /dev/null
+++ b/src/gfx/ps1/CMakeLists.txt
@@ -0,0 +1,40 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_subdirectory(src)
+target_include_directories(gfx PUBLIC include PRIVATE private_include)
+target_link_libraries(gfx PRIVATE
+    drv_ps1_bios
+    drv_ps1_dma
+    drv_ps1_interrupt
+    drv_ps1_gpu
+)
+
+set(modes VMODE_PAL VMODE_NTSC)
+
+if(VIDEO_MODE)
+    if(NOT "${VIDEO_MODE}" IN_LIST modes)
+        message(FATAL_ERROR "Invalid video mode ${VIDEO_MODE}. Available options:\n"
+            "${modes}\n"
+            "Run CMake again using one of the available video modes e.g.: cmake .. -DVIDEO_MODE=VMODE_PAL")
+    endif()
+
+    target_compile_definitions(gfx PRIVATE VIDEO_MODE=${VIDEO_MODE})
+else()
+    message(FATAL_ERROR "Please define video mode. Available options:\n"
+        "${modes}\n"
+        "Run CMake again using one of the available video modes e.g.: cmake .. -DVIDEO_MODE=VMODE_PAL")
+endif()
diff --git a/src/gfx/ps1/include/gfx/port.h b/src/gfx/ps1/include/gfx/port.h
new file mode 100644
index 0000000..2e609d1
--- /dev/null
+++ b/src/gfx/ps1/include/gfx/port.h
@@ -0,0 +1,126 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef GFX_PS1_H
+#define GFX_PS1_H
+
+#include <stdint.h>
+
+union gfx_common
+{
+    struct
+    {
+        uint32_t tpagex :4, tpagey :1, stp :2, bpp :2, dither :1,
+            draw_to_disp :1, disable :1, xflip :1, yflip :1, :10;
+        uint8_t cmd;
+    } f;
+
+    uint32_t mask;
+};
+
+union gfx_sznext
+{
+    struct
+    {
+        uint32_t next :24, sz :8;
+    } f;
+
+    uint32_t cmd_next;
+};
+
+struct gfx_sprite
+{
+    union gfx_sznext sznext;
+    union gfx_common common;
+    uint8_t r, g, b;
+    uint8_t cmd;
+    int16_t x, y;
+    uint8_t u, v;
+    uint16_t clutid;
+    uint16_t w, h;
+};
+
+struct quad
+{
+    union gfx_sznext sznext;
+    uint8_t r, g, b;
+    uint8_t cmd;
+    int16_t x0, y0;
+    uint8_t u0, v0;
+    uint16_t clutid;
+    int16_t x1, y1;
+    uint8_t u1, v1;
+
+    union
+    {
+        struct
+        {
+            /* 0-8 Same as GP0(E1h).Bit0-8. */
+            uint16_t lb :9;
+            uint16_t :2;
+            /* 11 Same as GP0(E1h).Bit11. */
+            uint16_t hb :1;
+            uint16_t :4;
+        } bit;
+
+        uint16_t mask;
+    } tpage;
+
+    int16_t x2, y2;
+    uint8_t u2, v2;
+    uint16_t :16;
+    int16_t x3, y3;
+    uint8_t u3, v3;
+    uint16_t :16;
+};
+
+struct gfx_rect
+{
+    union gfx_sznext sznext;
+    union gfx_common common;
+    uint8_t r, g, b;
+    uint8_t cmd;
+    int16_t x, y;
+    uint16_t w, h;
+};
+
+struct stp_4line
+{
+    union gfx_sznext sznext;
+    union gfx_common common;
+    uint8_t r, g, b;
+    uint8_t cmd;
+    int16_t x, y;
+
+    struct stp_4line_vtx
+    {
+        uint32_t r :8, g :8, b :8, :8;
+        int16_t x, y;
+    } vertices[4];
+
+    uint32_t end;
+};
+
+void gfx_add_to_list(union gfx_sznext *p);
+void *gfx_heap_top(void);
+struct gfx_sprite *gfx_sprite_get(void);
+struct quad *quad_get(void);
+struct gfx_rect *rect_get(void);
+struct stp_4line *stp_4line_get(void);
+
+#endif
diff --git a/src/gfx/ps1/private_include/gfx/private.h b/src/gfx/ps1/private_include/gfx/private.h
new file mode 100644
index 0000000..72d8f39
--- /dev/null
+++ b/src/gfx/ps1/private_include/gfx/private.h
@@ -0,0 +1,19 @@
+#ifndef GFX_PS1_PRIVATE_H
+#define GFX_PS1_PRIVATE_H
+
+#include <gfx/gfx.h>
+
+enum
+{
+    SCREEN_W = 640,
+    SCREEN_H = 480
+};
+
+void gfx_swapheap(void);
+void gfx_initenvs(void);
+void gfx_swapbuffers(void);
+void gfx_swapenvs(void);
+
+extern int gfx_vblank_ev;
+
+#endif
diff --git a/src/gfx/ps1/src/4line.c b/src/gfx/ps1/src/4line.c
new file mode 100644
index 0000000..766eb2d
--- /dev/null
+++ b/src/gfx/ps1/src/4line.c
@@ -0,0 +1,15 @@
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <psxgpu.h>
+#include <stdint.h>
+#include <string.h>
+
+void stp_4line_init(struct stp_4line *const l)
+{
+    memset(l, 0, sizeof *l);
+    l->sznext.f.sz = (sizeof *l - sizeof l->sznext) / sizeof (uint32_t);
+    l->common.f.cmd = DRAW_MODE;
+    l->cmd = 0x5A;
+    enum {TERMINATION_CODE = 0x55555555};
+    l->end = TERMINATION_CODE;
+}
diff --git a/src/gfx/ps1/src/CMakeLists.txt b/src/gfx/ps1/src/CMakeLists.txt
new file mode 100644
index 0000000..418bd3b
--- /dev/null
+++ b/src/gfx/ps1/src/CMakeLists.txt
@@ -0,0 +1,32 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(gfx PRIVATE
+    # 4line.c
+    # env.c
+    draw.c
+    heap.c
+    init.c
+    ready.c
+    swapenvs.c
+    # quad.c
+    # rect.c
+    # sort.c
+    # sprite.c
+    vblank.c
+)
+
+add_subdirectory(sprite)
diff --git a/src/gfx/ps1/src/add_to_list.c b/src/gfx/ps1/src/add_to_list.c
new file mode 100644
index 0000000..dff4910
--- /dev/null
+++ b/src/gfx/ps1/src/add_to_list.c
@@ -0,0 +1,39 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <stddef.h>
+#include <stdint.h>
+
+static union gfx_sznext *first, *last;
+
+void gfx_add_to_list(union gfx_sznext *const p)
+{
+    if (!first)
+        first = p;
+    else if (last)
+        last->f.next = (uint32_t)p;
+
+    last = p;
+}
+
+void *gfx_heap_top(void)
+{
+    return first;
+}
diff --git a/src/gfx/ps1/src/deinit.c b/src/gfx/ps1/src/deinit.c
new file mode 100644
index 0000000..ccf6c2d
--- /dev/null
+++ b/src/gfx/ps1/src/deinit.c
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+
+void gfx_deinit(void)
+{
+}
diff --git a/src/gfx/ps1/src/draw.c b/src/gfx/ps1/src/draw.c
new file mode 100644
index 0000000..40abdf7
--- /dev/null
+++ b/src/gfx/ps1/src/draw.c
@@ -0,0 +1,70 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <drv/ps1/dma.h>
+#include <drv/ps1/gpu.h>
+
+static union gfx_sznext *first, *last;
+
+void gfx_add_to_list(union gfx_sznext *const p)
+{
+    if (!first)
+        first = p;
+    else if (last)
+        last->f.next = (uint32_t)p;
+
+    last = p;
+}
+
+int gfx_draw(void)
+{
+    static union gfx_sznext term = {.cmd_next = 0xffffff};
+
+    gfx_add_to_list(&term);
+
+    if (SCREEN_W != 640)
+        gfx_swapenvs();
+
+    gfx_swapheap();
+
+    GP1->mask = (const union drv_ps1_gpu_gp1)
+    {
+        .dma =
+        {
+            .cmd = GP1_DMA_DIR,
+            .dir = GP1_DMA_DIR_CPU_TO_GP0
+        }
+    }.mask;
+
+    D2_MADR->mask = (uint32_t)first;
+    D2_BCR->syncmode_2.reserved = 0;
+    D2_CHCR->mask = (const union chcr)
+    {
+        .bits =
+        {
+            .sync_mode = CHCR_SYNC_MODE_LINKED_LIST,
+            .dir = CHCR_DIR_FROM_RAM,
+            .start_busy = 1
+        }
+    }.mask;
+
+    first = NULL;
+    return 0;
+}
diff --git a/src/gfx/ps1/src/env.c b/src/gfx/ps1/src/env.c
new file mode 100644
index 0000000..100f366
--- /dev/null
+++ b/src/gfx/ps1/src/env.c
@@ -0,0 +1,71 @@
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <psxgpu.h>
+#include <errno.h>
+#include <stdbool.h>
+
+static GsDispEnv dispenv;
+enum {ENV_Y = SCREEN_H + 16};
+
+static GsDrawEnv drawenv =
+{
+    .y = ENV_Y,
+    .w = SCREEN_W,
+    .h = SCREEN_H
+};
+
+int screen_w = SCREEN_W, screen_h = SCREEN_H;
+
+void gfx_swapbuffers(void)
+{
+    const short y = drawenv.y;
+
+    drawenv.y = dispenv.y;
+    dispenv.y = y;
+    GsSetDrawEnv(&drawenv);
+    GsSetDispEnv(&dispenv);
+}
+
+void gfx_initenvs(void)
+{
+    GsSetDrawEnv(&drawenv);
+    GsSetDispEnv(&dispenv);
+}
+
+int gfx_toggle_fullscreen(void)
+{
+    errno = ENOTSUP;
+    return -1;
+}
+
+int gfx_set_fullscreen(const short w, const short h)
+{
+    errno = ENOTSUP;
+    return -1;
+}
+
+bool gfx_fullscreen_available(void)
+{
+    return false;
+}
+
+bool gfx_fullscreen(void)
+{
+    return true;
+}
+
+int gfx_display_size(short *const w, short *const h)
+{
+    *w = SCREEN_W;
+    *h = SCREEN_H;
+    return 0;
+}
+
+bool gfx_inside_drawenv(const short x, const short y, const short w,
+    const short h)
+{
+    return (x + w >= 0)
+        && x < drawenv.w
+        && (y + h >= 0)
+		&& y < drawenv.h;
+}
diff --git a/src/gfx/ps1/src/heap.c b/src/gfx/ps1/src/heap.c
new file mode 100644
index 0000000..feb95c9
--- /dev/null
+++ b/src/gfx/ps1/src/heap.c
@@ -0,0 +1,73 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <stddef.h>
+
+static unsigned int sel;
+static size_t heap_i;
+
+void gfx_swapheap(void)
+{
+    sel ^= 1;
+    heap_i = 0;
+}
+
+static void *get_element(const size_t sz)
+{
+    enum {HEAP_SZ = 49152, N_HEAPS = 2};
+    static char heaps[N_HEAPS][HEAP_SZ];
+    const size_t new_sz = heap_i + sz;
+    void *ret = NULL;
+
+    if (new_sz < sizeof *heaps / sizeof **heaps)
+    {
+        ret = &heaps[sel][heap_i];
+        heap_i += sz;
+    }
+    else
+    {
+        static volatile int a;
+
+        a++;
+        return NULL;
+    }
+
+    return ret;
+}
+
+struct gfx_sprite *gfx_sprite_get(void)
+{
+    return get_element(sizeof (struct gfx_sprite));
+}
+
+struct quad *quad_get(void)
+{
+    return get_element(sizeof (struct quad));
+}
+
+struct gfx_rect *rect_get(void)
+{
+    return get_element(sizeof (struct gfx_rect));
+}
+
+struct stp_4line *stp_4line_get(void)
+{
+    return get_element(sizeof (struct stp_4line));
+}
diff --git a/src/gfx/ps1/src/init.c b/src/gfx/ps1/src/init.c
new file mode 100644
index 0000000..3a94f32
--- /dev/null
+++ b/src/gfx/ps1/src/init.c
@@ -0,0 +1,153 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <drv/ps1/bios.h>
+#include <drv/ps1/dma.h>
+#include <drv/ps1/gpu.h>
+#include <drv/ps1/interrupt.h>
+#include <stddef.h>
+
+struct res
+{
+    int hres, hres2, vres, interlace;
+};
+
+static void getres(const short w, struct res *const r)
+{
+    *r = (const struct res){0};
+
+    switch (w)
+    {
+        case 320:
+            r->hres = 1;
+            break;
+        case 368:
+            r->hres2 = 1;
+            break;
+        case 512:
+            r->hres = 2;
+            break;
+        case 640:
+            r->hres = 3;
+            r->vres = 1;
+            r->interlace = 1;
+            break;
+    }
+}
+
+int gfx_init(void)
+{
+    const union dpcr dpcr = {.bits.gpu_en = 1};
+    const int event = OpenEvent(CLASS_VBLANK, SPEC_INTERRUPTED, MODE_READY,
+        NULL);
+
+    if (event == -1)
+        return -1;
+
+    DPCR->mask |= dpcr.mask;
+    GP1->mask = (const union drv_ps1_gpu_gp1)
+    {
+        .dma =
+        {
+            .cmd = GP1_DMA_DIR,
+            .dir = GP1_DMA_DIR_CPU_TO_GP0
+        }
+    }.mask;
+
+    GP1->mask = (const union drv_ps1_gpu_gp1)
+    {
+        .display =
+        {
+            .cmd = GP1_DISPLAY_ENABLE,
+        }
+    }.mask;
+
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+        {.draw_mode.cmd = GP0_DRAW_MODE}.mask;
+
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+        {.tex_window.cmd = GP0_TEX_WINDOW}.mask;
+
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+        {.draw_area_tl.cmd = GP0_DRAW_AREA_TOP_LEFT}.mask;
+
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+    {
+        .draw_area_br =
+        {
+            .cmd = GP0_DRAW_AREA_BOTTOM_RIGHT,
+            .x = SCREEN_W - 1,
+            .y = SCREEN_H - 1,
+        }
+    }.mask;
+
+    GP1->mask = (const union drv_ps1_gpu_gp1)
+    {
+        .h_display_range =
+        {
+            .cmd = GP1_H_DISPLAY_RANGE,
+            .x1 = 0x260,
+            .x2 = 0x260 + 320 * 8
+        }
+    }.mask;
+
+#if 0
+    GP1->mask = (const union drv_ps1_gpu_gp1)
+    {
+        .v_display_range =
+        {
+            .cmd = GP1_V_DISPLAY_RANGE,
+#if VIDEO_MODE == VMODE_PAL
+            .y1 = 0xa3,
+            .y2 = 0xa3 + (SCREEN_H / 2)
+#elif VIDEO_MODE == VMODE_NTSC
+            .y1 = 0x88 - (224 / 2),
+            .y2 = 0x88 + (224 / 2)
+#endif
+        }
+    }.mask;
+#else
+    GP1->mask = 0x06C4E24E;
+    GP1->mask = 0x07040010;
+#endif
+
+    struct res r;
+
+    getres(SCREEN_W, &r);
+
+    GP1->mask = (const union drv_ps1_gpu_gp1)
+    {
+        .display_mode =
+        {
+            .cmd = GP1_DISPLAY_MODE,
+            .hres = r.hres,
+            .hres2 = r.hres2,
+            .vres = r.vres,
+            .vinterlace = r.interlace,
+#if VIDEO_MODE == VMODE_PAL
+            .vmode = 1
+#endif
+        }
+    }.mask;
+
+    I_MASK->bits.vblank = 1;
+    EnableEvent(gfx_vblank_ev = event);
+    return 0;
+}
diff --git a/src/gfx/ps1/src/quad.c b/src/gfx/ps1/src/quad.c
new file mode 100644
index 0000000..bfabee2
--- /dev/null
+++ b/src/gfx/ps1/src/quad.c
@@ -0,0 +1,24 @@
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <gfx/port.h>
+#include <stdint.h>
+#include <string.h>
+
+static void quad_init(struct quad *const q)
+{
+    memset(q, 0, sizeof *q);
+    q->sznext.f.sz = (sizeof *q - sizeof q->sznext) / sizeof (uint32_t);
+    q->cmd = 0x2d;
+}
+
+int quad_from_sprite(const struct gfx_sprite *const s, struct quad *const q)
+{
+    quad_init(q);
+    q->tpage.mask = s->common.mask;
+    q->clutid = s->clutid;
+    q->u0 = q->u2 = s->u;
+    q->v0 = q->v1 = s->v;
+    q->u1 = q->u3 = s->u + s->w - 1;
+    q->v2 = q->v3 = s->v + s->h - 1;
+    return 0;
+}
diff --git a/src/gfx/ps1/src/ready.c b/src/gfx/ps1/src/ready.c
new file mode 100644
index 0000000..0e17cdb
--- /dev/null
+++ b/src/gfx/ps1/src/ready.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <drv/ps1/bios.h>
+#include <stdbool.h>
+
+bool gfx_ready(void)
+{
+    return TestEvent(gfx_vblank_ev);
+}
diff --git a/src/gfx/ps1/src/rect.c b/src/gfx/ps1/src/rect.c
new file mode 100644
index 0000000..57b1b2a
--- /dev/null
+++ b/src/gfx/ps1/src/rect.c
@@ -0,0 +1,25 @@
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <psxgpu.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+static void common_init(struct gfx_rect *const r)
+{
+    memset(r, 0, sizeof *r);
+    r->sznext.f.sz = (sizeof *r - sizeof r->sznext) / sizeof (uint32_t);
+    r->common.f.cmd = DRAW_MODE;
+}
+
+void gfx_rect_init(struct gfx_rect *const r)
+{
+    common_init(r);
+    r->cmd = 0x60;
+}
+
+void semitrans_rect_init(struct gfx_rect *const r)
+{
+    common_init(r);
+    r->cmd = 0x62;
+}
diff --git a/src/gfx/ps1/src/sort.c b/src/gfx/ps1/src/sort.c
new file mode 100644
index 0000000..5c1c278
--- /dev/null
+++ b/src/gfx/ps1/src/sort.c
@@ -0,0 +1,73 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <drv/ps1/bios.h>
+#include <stddef.h>
+#include <stdint.h>
+
+static union gfx_sznext *first, *last;
+
+static void add_to_list(union gfx_sznext *const p)
+{
+    if (!first)
+        first = p;
+    else if (last)
+        last->f.next = (uint32_t)p;
+
+    last = p;
+}
+
+void sprite_sort(struct gfx_sprite *const s)
+{
+    add_to_list(&s->sznext);
+}
+
+void quad_sort(struct quad *const q)
+{
+    add_to_list(&q->sznext);
+}
+
+void gfx_rect_sort(struct gfx_rect *const r)
+{
+    add_to_list(&r->sznext);
+}
+
+void stp_4line_sort(struct stp_4line *const l)
+{
+    add_to_list(&l->sznext);
+}
+
+int gfx_draw(void)
+{
+    static union gfx_sznext term = {.cmd_next = 0xffffff};
+
+    add_to_list(&term);
+
+    void gpu_ctrl(unsigned int command, unsigned int param);
+
+    gfx_swapbuffers();
+    gfx_swapheap();
+    gpu_ctrl(4, 2);
+    D2_MADR = (uint32_t)first;
+	D2_BCR = 0;
+	D2_CHCR = (1 << 0xa) | 1 | (1 << 0x18);
+    first = NULL;
+    return 0;
+}
diff --git a/src/gfx/ps1/src/sprite/CMakeLists.txt b/src/gfx/ps1/src/sprite/CMakeLists.txt
new file mode 100644
index 0000000..b42d699
--- /dev/null
+++ b/src/gfx/ps1/src/sprite/CMakeLists.txt
@@ -0,0 +1,22 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(gfx PRIVATE
+    clone.c
+    free.c
+    load.c
+    sort.c
+)
diff --git a/src/gfx/ps1/src/sprite/clone.c b/src/gfx/ps1/src/sprite/clone.c
new file mode 100644
index 0000000..30d0d32
--- /dev/null
+++ b/src/gfx/ps1/src/sprite/clone.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+
+int gfx_sprite_clone(const struct gfx_sprite *const src,
+    struct gfx_sprite *const dst)
+{
+    *dst = *src;
+    return 0;
+}
diff --git a/src/gfx/ps1/src/sprite/free.c b/src/gfx/ps1/src/sprite/free.c
new file mode 100644
index 0000000..3b3d984
--- /dev/null
+++ b/src/gfx/ps1/src/sprite/free.c
@@ -0,0 +1,23 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+
+void sprite_free(struct gfx_sprite *const src)
+{
+}
diff --git a/src/gfx/ps1/src/sprite/load.c b/src/gfx/ps1/src/sprite/load.c
new file mode 100644
index 0000000..7664017
--- /dev/null
+++ b/src/gfx/ps1/src/sprite/load.c
@@ -0,0 +1,191 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/sprite.h>
+#include <gfx/private.h>
+#include <drv/ps1/gpu.h>
+#include <stdint.h>
+
+static void init(struct gfx_sprite *const s)
+{
+    *s = (const struct gfx_sprite){0};
+    s->sznext.f.sz = (sizeof *s - sizeof s->sznext) / sizeof (uint32_t);
+    s->common.f.cmd = GP0_DRAW_MODE;
+    s->cmd = GP0_TEXTRECT_VARSZ_OPAQ_RAW;
+}
+
+struct tim_pos
+{
+    uint16_t x, y, w, h;
+};
+
+static void transfer_init(const struct tim_pos *const p)
+{
+	while (!GPUSTAT->bits.ready_cmd)
+        ;
+
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+        {.copy_rect.cmd = GP0_COPY_RECT_CPU_VRAM}.mask;
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+        {.coord = {.x = p->x, .y = p->y}}.mask;
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+        {.size = {.w = p->w, .h = p->h}}.mask;
+}
+
+static int transfer(const size_t sz, const gfx_read r, void *const args)
+{
+    const size_t rem = sz % sizeof (uint32_t);
+
+    if (sz >= sizeof (uint32_t))
+    {
+        for (size_t i = 0; i < sz / sizeof (uint32_t); i++)
+        {
+            uint32_t pix;
+
+            if (r(&pix, sizeof pix, args))
+                return -1;
+
+            GP0->mask = pix;
+        }
+    }
+
+    if (rem)
+    {
+        uint32_t pix = 0;
+
+        if (r(&pix, rem, args))
+            return -1;
+
+        GP0->mask = pix;
+    }
+
+    return 0;
+}
+
+struct header
+{
+    uint32_t sz;
+    struct tim_pos pos;
+};
+
+static short get_clutid(const short x, const short y)
+{
+    return (x & 0x3ff) >> 4 | (y & 0x1ff) << 6;
+}
+
+static int upload_clut(struct gfx_sprite *const s, const gfx_read r,
+    void *const args)
+{
+    struct header clut;
+
+    if (r(&clut, sizeof clut, args))
+        return -1;
+
+    transfer_init(&clut.pos);
+
+    const size_t sz = clut.sz - sizeof clut;
+
+    if (transfer(sz, r, args))
+        return -1;
+
+    s->clutid = get_clutid(clut.pos.x, clut.pos.y);
+    return 0;
+}
+
+enum bpp
+{
+    BPP_4 = 0,
+    BPP_8 = 1,
+    BPP_16 = 2,
+    BPP_24 = 4
+};
+
+static int upload_img(struct gfx_sprite *const s, const enum bpp bpp,
+    const gfx_read r, void *const args)
+{
+    struct header img;
+
+    if (r(&img, sizeof img, args))
+        return -1;
+
+    transfer_init(&img.pos);
+
+    const size_t sz = img.sz - sizeof img;
+
+    if (transfer(sz, r, args))
+        return -1;
+
+    enum
+    {
+        VRAM_X = 1024,
+        VRAM_Y = 512,
+        TPAGE_WIDTH = 64
+    };
+
+    s->common.f.tpagex = img.pos.x / TPAGE_WIDTH;
+    s->common.f.tpagey = img.pos.y / (VRAM_Y / 2);
+    s->u = img.pos.x % TPAGE_WIDTH;
+    s->v = img.pos.y % (VRAM_Y / 2);
+
+    switch (bpp)
+    {
+        case BPP_4:
+            s->w = img.pos.w * 4;
+            s->u <<= 2;
+            break;
+
+        case BPP_8:
+            s->w = img.pos.w * 2;
+            s->u <<= 1;
+            break;
+
+        case BPP_16:
+            s->w = img.pos.w;
+            break;
+
+        case BPP_24:
+            s->w = img.pos.w + (img.pos.w / 2);
+            break;
+    }
+
+    s->h = img.pos.h;
+    return 0;
+}
+
+int gfx_sprite_load(struct gfx_sprite *s, const gfx_read r, void *const args)
+{
+    init(s);
+
+    struct
+    {
+        uint32_t version, bpp :3, has_clut :1, :28;
+    } h;
+
+    enum {VERSION_ID = 0x10};
+
+    if (r(&h, sizeof h, args)
+        || h.version != VERSION_ID
+        || h.bpp == BPP_24
+        || (h.has_clut && upload_clut(s, r, args))
+        || upload_img(s, h.bpp, r, args))
+        return -1;
+
+    s->common.f.bpp = h.bpp ? __builtin_ctz(h.bpp) + 1 : 0;
+    return 0;
+}
diff --git a/src/gfx/ps1/src/sprite/sort.c b/src/gfx/ps1/src/sprite/sort.c
new file mode 100644
index 0000000..76fc214
--- /dev/null
+++ b/src/gfx/ps1/src/sprite/sort.c
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/port.h>
+
+int gfx_sprite_sort(struct gfx_sprite *const s)
+{
+    gfx_add_to_list(&s->sznext);
+    return 0;
+}
diff --git a/src/gfx/ps1/src/swapenvs.c b/src/gfx/ps1/src/swapenvs.c
new file mode 100644
index 0000000..9e120ad
--- /dev/null
+++ b/src/gfx/ps1/src/swapenvs.c
@@ -0,0 +1,58 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <drv/ps1/gpu.h>
+
+void gfx_swapenvs(void)
+{
+    static short dispenv, drawenv = 256;
+    const short y = dispenv;
+
+    dispenv = drawenv;
+    drawenv = y;
+
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+    {
+        .draw_area_tl =
+        {
+            .cmd = GP0_DRAW_AREA_TOP_LEFT,
+            .y = drawenv
+        }
+    }.mask;
+
+    GP0->mask = (const union drv_ps1_gpu_gp0)
+    {
+        .draw_area_br =
+        {
+            .cmd = GP0_DRAW_AREA_BOTTOM_RIGHT,
+            .x = SCREEN_W - 1,
+            .y = drawenv + SCREEN_H - 1,
+        }
+    }.mask;
+
+    GP1->mask = (const union drv_ps1_gpu_gp1)
+    {
+        .disparea =
+        {
+            .cmd = GP1_START_DISPLAY_AREA,
+            .y = dispenv
+        }
+    }.mask;
+}
diff --git a/src/gfx/ps1/src/vblank.c b/src/gfx/ps1/src/vblank.c
new file mode 100644
index 0000000..cc445c7
--- /dev/null
+++ b/src/gfx/ps1/src/vblank.c
@@ -0,0 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/private.h>
+
+int gfx_vblank_ev;
diff --git a/src/gfx/sdl-1.2/CMakeLists.txt b/src/gfx/sdl-1.2/CMakeLists.txt
new file mode 100644
index 0000000..11d2245
--- /dev/null
+++ b/src/gfx/sdl-1.2/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_subdirectory(src)
+target_include_directories(gfx PUBLIC include PRIVATE private_include)
+target_link_libraries(gfx PUBLIC SDL::SDL PRIVATE SDL::SDL_gfx)
diff --git a/src/gfx/sdl-1.2/include/gfx/port.h b/src/gfx/sdl-1.2/include/gfx/port.h
new file mode 100644
index 0000000..bf94a38
--- /dev/null
+++ b/src/gfx/sdl-1.2/include/gfx/port.h
@@ -0,0 +1,58 @@
+#ifndef GFX_SDL_H
+#define GFX_SDL_H
+
+#include <SDL.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+struct gfx_sprite
+{
+    SDL_Surface *s, *s_x;
+    short x, y, w, h;
+    unsigned char u, v;
+    bool transparent;
+};
+
+struct quad
+{
+    unsigned char r, g, b;
+    short x0, x1, x2, x3;
+    short y0, y1, y2, y3;
+    unsigned char u0, u1, u2, u3;
+    unsigned char v0, v1, v2, v3;
+    short w, h;
+    bool transparent;
+    SDL_Surface *s, *s_x;
+};
+
+struct gfx_rect
+{
+    unsigned char r, g, b;
+    short x, y, w, h;
+    bool stp;
+};
+
+struct stp_4line
+{
+    short x, y;
+    unsigned char r, g, b;
+
+    struct stp_4line_vtx
+    {
+        unsigned char r, g, b;
+        short x, y;
+    } vertices[4];
+};
+
+#define common_get_or_ret(t, x, ret) \
+    struct t x##__, *const x = &x##__
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GFX_SDL_H */
diff --git a/src/gfx/sdl-1.2/private_include/gfx/private.h b/src/gfx/sdl-1.2/private_include/gfx/private.h
new file mode 100644
index 0000000..e1af764
--- /dev/null
+++ b/src/gfx/sdl-1.2/private_include/gfx/private.h
@@ -0,0 +1,26 @@
+#ifndef GFX_SDL_12_PRIVATE_H
+#define GFX_SDL_12_PRIVATE_H
+
+#include <gfx/gfx.h>
+#include <SDL.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+enum
+{
+    SCREEN_W = 320,
+    SCREEN_H = 240
+};
+
+int sprite_screen_resize_ev(struct gfx_sprite *s);
+void gfx_register_sprite(struct gfx_sprite *s);
+SDL_Surface *gfx_screen(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GFX_SDL_12_PRIVATE_H */
diff --git a/src/gfx/sdl-1.2/src/CMakeLists.txt b/src/gfx/sdl-1.2/src/CMakeLists.txt
new file mode 100644
index 0000000..4cef50b
--- /dev/null
+++ b/src/gfx/sdl-1.2/src/CMakeLists.txt
@@ -0,0 +1,23 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(gfx PRIVATE
+    env.c
+    line.c
+    quad.c
+    rect.c
+    sprite.c
+)
diff --git a/src/gfx/sdl-1.2/src/env.c b/src/gfx/sdl-1.2/src/env.c
new file mode 100644
index 0000000..2a51b97
--- /dev/null
+++ b/src/gfx/sdl-1.2/src/env.c
@@ -0,0 +1,204 @@
+#include <gfx/gfx.h>
+#include <gfx/private.h>
+#include <sdl-1.2/gfx/private.h>
+#include <SDL.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int screen_w = SCREEN_W, screen_h = SCREEN_H;
+static bool fullscreen;
+static SDL_Surface *screen;
+static struct gfx_sprite **list;
+static size_t list_len;
+
+void gfx_deinit(void)
+{
+    /* screen should be already freed by SDL_Quit. */
+    free(list);
+    SDL_QuitSubSystem(SDL_INIT_VIDEO);
+}
+
+static struct
+{
+    int w, h;
+} display, windowed;
+
+void gfx_register_sprite(struct gfx_sprite *const s)
+{
+    list = realloc(list, (list_len + 1) * sizeof *list);
+
+    if (list)
+        list[list_len++] = s;
+}
+
+static int resize_screen(int w, int h, const bool full_screen)
+{
+    Uint32 flags = SDL_HWSURFACE | SDL_RESIZABLE | SDL_ANYFORMAT | SDL_DOUBLEBUF;
+
+    const SDL_VideoInfo *const info = SDL_GetVideoInfo();
+
+    if (!info)
+    {
+        fprintf(stderr, "SDL_GetVideoInfo: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    static bool init;
+
+    if (!init)
+    {
+        display.w = info->current_w;
+        display.h = info->current_h;
+        init = true;
+    }
+
+    if (fullscreen)
+    {
+        flags |= SDL_FULLSCREEN;
+        w = display.w;
+        h = display.h;
+    }
+    else
+    {
+        windowed.w = w;
+        windowed.h = h;
+    }
+
+    int bpp = info->vfmt->BitsPerPixel;
+
+    if (screen)
+        SDL_FreeSurface(screen);
+
+    const int max_bpp = SDL_VideoModeOK(w, h, 0, flags);
+
+    if (max_bpp < 0)
+    {
+        fprintf(stderr, "SDL_VideoModeOK: %s\n", SDL_GetError());
+        return -1;
+    }
+    else if (bpp > max_bpp)
+        bpp = max_bpp;
+
+    if (!(screen = SDL_SetVideoMode(w, h, 0, flags)))
+    {
+        fprintf(stderr, "SDL_SetVideoMode: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    for (size_t i = 0; i < list_len; i++)
+        if (sprite_screen_resize_ev(list[i]))
+            return -1;
+
+    screen_w = w;
+    screen_h = h;
+    fullscreen = full_screen;
+    return 0;
+}
+
+SDL_Surface *gfx_screen(void)
+{
+    return screen;
+}
+
+int gfx_display_size(short *const w, short *const h)
+{
+    *w = display.w;
+    *h = display.h;
+    return 0;
+}
+
+int gfx_init(void)
+{
+    if (SDL_InitSubSystem(SDL_INIT_VIDEO))
+    {
+        fprintf(stderr, "%s: SDL_InitSubSystem: %s\n",
+            __func__, SDL_GetError());
+        return -1;
+    }
+
+    return resize_screen(screen_w, screen_h, fullscreen);
+}
+
+bool gfx_inside_drawenv(const short x, const short y, const short w,
+    const short h)
+{
+    return (x + w >= 0)
+        && x < screen_w
+        && (y + h >= 0)
+		&& y < screen_h;
+}
+
+static int get_resize_events(void)
+{
+    int n;
+    SDL_Event ev;
+
+    while ((n = SDL_PeepEvents(&ev, 1, SDL_GETEVENT,
+                SDL_VIDEORESIZEMASK)) > 0)
+    {
+        if (ev.type == SDL_VIDEORESIZE)
+        {
+            const SDL_ResizeEvent *const res = &ev.resize;
+
+            if (resize_screen(res->w, res->h, false))
+                return -1;
+        }
+    }
+
+    if (n < 0)
+    {
+        fprintf(stderr, "%s: SDL_PeepEvents: %s\n",
+            __func__, SDL_GetError());
+        return -1;
+    }
+
+    return 0;
+}
+
+int gfx_toggle_fullscreen(void)
+{
+    fullscreen ^= true;
+
+    const int w = fullscreen ? display.w : windowed.w;
+    const int h = fullscreen ? display.h : windowed.h;
+
+    return resize_screen(w, h, fullscreen);
+}
+
+int gfx_set_fullscreen(const short w, const short h)
+{
+    return resize_screen(display.w = w, display.h = h, fullscreen = true);
+}
+
+bool gfx_fullscreen_available(void)
+{
+    return true;
+}
+
+bool gfx_fullscreen(void)
+{
+    return fullscreen;
+}
+
+int gfx_draw(void)
+{
+    enum {FPS = 50, REFRESH_MS = 1000 / FPS};
+    static Uint32 prev;
+    const Uint32 cur = SDL_GetTicks();
+
+    if (cur - prev < REFRESH_MS)
+        SDL_Delay(REFRESH_MS - (cur - prev));
+
+    prev = SDL_GetTicks();
+
+    if (SDL_Flip(screen))
+    {
+        fprintf(stderr, "SDL_Flip: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    get_resize_events();
+    return 0;
+}
diff --git a/src/gfx/sdl-1.2/src/line.c b/src/gfx/sdl-1.2/src/line.c
new file mode 100644
index 0000000..b06a414
--- /dev/null
+++ b/src/gfx/sdl-1.2/src/line.c
@@ -0,0 +1,16 @@
+#include <gfx/gfx.h>
+#include <gfx/port.h>
+#include <sdl-1.2/gfx/private.h>
+#include <stddef.h>
+
+void stp_4line_init(struct stp_4line *const l)
+{
+}
+
+void semitrans_stp_4line_init(struct stp_4line *r)
+{
+}
+
+void stp_4line_sort(struct stp_4line *const r)
+{
+}
diff --git a/src/gfx/sdl-1.2/src/quad.c b/src/gfx/sdl-1.2/src/quad.c
new file mode 100644
index 0000000..1617a8b
--- /dev/null
+++ b/src/gfx/sdl-1.2/src/quad.c
@@ -0,0 +1,44 @@
+#include <gfx/gfx.h>
+#include <gfx/port.h>
+#include <sdl-1.2/gfx/private.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+int quad_from_sprite(const struct gfx_sprite *const s, struct quad *const q)
+{
+    q->s = s->s;
+    q->s_x = s->s_x;
+    q->u0 = q->u2 = s->u;
+    q->v0 = q->v1 = s->v;
+    q->u1 = q->u3 = s->u + s->w - 1;
+    q->v2 = q->v3 = s->v + s->h - 1;
+    q->w = s->w;
+    q->h = s->h;
+    return 0;
+}
+
+void quad_sort(struct quad *const q)
+{
+    const bool xflip = q->x0 > q->x1;
+
+    SDL_Rect r =
+    {
+        .x = xflip ? q->x1 : q->x0,
+        .y = q->y0
+    };
+
+    const short w = q->u1 - q->u0 + 1, h = q->v2 - q->v0 + 1;
+
+    SDL_Rect clip =
+    {
+        .x = xflip ? q->w - q->u0 - w: q->u0,
+        .y = q->v0,
+        .w = w,
+        .h = h
+    };
+
+    SDL_Surface *const s = xflip ? q->s_x : q->s;
+
+    if (SDL_BlitSurface(s, &clip, gfx_screen(), &r))
+        fprintf(stderr, "SDL_BlitSurface: %s\n", SDL_GetError());
+}
diff --git a/src/gfx/sdl-1.2/src/rect.c b/src/gfx/sdl-1.2/src/rect.c
new file mode 100644
index 0000000..57a2ab3
--- /dev/null
+++ b/src/gfx/sdl-1.2/src/rect.c
@@ -0,0 +1,35 @@
+#include <gfx/gfx.h>
+#include <gfx/port.h>
+#include <sdl-1.2/gfx/private.h>
+#include <SDL.h>
+
+void gfx_rect_sort(struct gfx_rect *const r)
+{
+    SDL_Rect rct =
+    {
+        .x = r->x,
+        .y = r->y,
+        .w = r->w,
+        .h = r->h
+    };
+
+    SDL_Surface *const screen = gfx_screen();
+    const Uint32 map = SDL_MapRGB(screen->format, r->r, r->g, r->b);
+
+    if (SDL_FillRect(screen, &rct, map))
+    {
+        fprintf(stderr, "SDL_FillRect: %s\n", SDL_GetError());
+        return;
+    }
+}
+
+void gfx_rect_init(struct gfx_rect *const r)
+{
+    *r = (const struct gfx_rect){0};
+}
+
+void semitrans_rect_init(struct gfx_rect *const r)
+{
+    gfx_rect_init(r);
+    r->stp = true;
+}
diff --git a/src/gfx/sdl-1.2/src/sprite.c b/src/gfx/sdl-1.2/src/sprite.c
new file mode 100644
index 0000000..086e2b5
--- /dev/null
+++ b/src/gfx/sdl-1.2/src/sprite.c
@@ -0,0 +1,143 @@
+#include <gfx/gfx.h>
+#include <gfx/port.h>
+#include <header.h>
+#include <sdl-1.2/gfx/private.h>
+#include <SDL.h>
+#include <SDL_rotozoom.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+void sprite_free(struct gfx_sprite *const s)
+{
+    if (s && s->s)
+        SDL_FreeSurface(s->s);
+}
+
+int sprite_clone(const struct gfx_sprite *const src, struct gfx_sprite *const dst)
+{
+    *dst = *src;
+    return 0;
+}
+
+static int set_transparent(SDL_Surface *const s)
+{
+    /* Magenta as transparent. */
+    const Uint32 map = SDL_MapRGB(s->format, 255, 0, 255);
+    const int ret = SDL_SetColorKey(s, SDL_SRCCOLORKEY | SDL_RLEACCEL, map);
+
+    if (ret)
+        fprintf(stderr, "SDL_SetColorKey: %s\n", SDL_GetError());
+
+    return ret;
+}
+
+int sprite_screen_resize_ev(struct gfx_sprite *const s)
+{
+    int ret = -1;
+    SDL_Surface *const old = s->s, *const old_x = s->s_x;
+
+    if (s->transparent && (set_transparent(old) || set_transparent(old_x)))
+        goto end;
+    else if (!(s->s = SDL_DisplayFormat(old)))
+    {
+        fprintf(stderr, "SDL_DisplayFormat: %s\n", SDL_GetError());
+        goto end;
+    }
+    else if (!(s->s_x = SDL_DisplayFormat(old_x)))
+    {
+        fprintf(stderr, "SDL_DisplayFormat: %s\n", SDL_GetError());
+        goto end;
+    }
+
+    ret = 0;
+
+end:
+    SDL_FreeSurface(old);
+    SDL_FreeSurface(old_x);
+    return ret;
+}
+
+static int load_header(struct gfx_sprite *const s, FILE *const f)
+{
+    if (header_load_bool(f, "transparent", &s->transparent))
+        return -1;
+
+    return 0;
+}
+
+static int load_bitmap(struct gfx_sprite *const s, FILE *const f)
+{
+    int ret = -1;
+    SDL_RWops *ops = NULL;
+    SDL_Surface *ts = NULL, *zs = NULL;
+
+    if (!(ops = SDL_RWFromFP(f, 0)))
+    {
+        fprintf(stderr, "SDL_RWFromFP: %s\n", SDL_GetError());
+        goto end;
+    }
+    else if (!(ts = SDL_LoadBMP_RW(ops, 0)))
+    {
+        fprintf(stderr, "SDL_LoadBMP_RW: %s\n", SDL_GetError());
+        goto end;
+    }
+    else if (!(zs = zoomSurface(ts, -1, 1, 0)))
+    {
+        fprintf(stderr, "zoomSurface: %s\n", SDL_GetError());
+        goto end;
+    }
+    else if (s->transparent && (set_transparent(ts) || set_transparent(zs)))
+        goto end;
+    else if (!(s->s = SDL_DisplayFormat(ts)))
+    {
+        fprintf(stderr, "SDL_DisplayFormat: %s\n", SDL_GetError());
+        goto end;
+    }
+    else if (!(s->s_x = SDL_DisplayFormat(zs)))
+    {
+        fprintf(stderr, "SDL_DisplayFormat: %s\n", SDL_GetError());
+        goto end;
+    }
+
+    gfx_register_sprite(s);
+    s->w = ts->w;
+    s->h = ts->h;
+    ret = 0;
+
+end:
+    SDL_FreeRW(ops);
+    SDL_FreeSurface(ts);
+    SDL_FreeSurface(zs);
+    return ret;
+}
+
+int sprite_from_fp(struct gfx_sprite *const s, FILE *const f)
+{
+    *s = (const struct gfx_sprite){0};
+
+    if (load_header(s, f) || load_bitmap(s, f))
+        return -1;
+
+    return 0;
+}
+
+void sprite_sort(struct gfx_sprite *const s)
+{
+    SDL_Rect r =
+    {
+        .x = s->x,
+        .y = s->y
+    };
+
+    SDL_Rect clip =
+    {
+        .x = s->u,
+        .y = s->v,
+        .w = s->w,
+        .h = s->h
+    };
+
+    if (SDL_BlitSurface(s->s, &clip, gfx_screen(), &r))
+        fprintf(stderr, "SDL_BlitSurface: %s\n", SDL_GetError());
+}
diff --git a/src/gfx/src/CMakeLists.txt b/src/gfx/src/CMakeLists.txt
new file mode 100644
index 0000000..3b3cac2
--- /dev/null
+++ b/src/gfx/src/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(gfx PRIVATE
+    dim.c
+)
diff --git a/src/gfx/src/dim.c b/src/gfx/src/dim.c
new file mode 100644
index 0000000..674da9c
--- /dev/null
+++ b/src/gfx/src/dim.c
@@ -0,0 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <gfx/private.h>
+
+int screen_w = SCREEN_W, screen_h = SCREEN_H;
diff --git a/src/init/CMakeLists.txt b/src/init/CMakeLists.txt
new file mode 100644
index 0000000..5cac77d
--- /dev/null
+++ b/src/init/CMakeLists.txt
@@ -0,0 +1,34 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(init)
+add_subdirectory(src)
+target_include_directories(init PUBLIC include PRIVATE private_include)
+target_link_libraries(init PRIVATE
+    aio
+    devfs
+    drv
+    io
+    kprintf
+    loop
+    rootfs
+    iso9660
+)
+
+if(PS1_BUILD)
+    add_subdirectory(ps1)
+    target_link_libraries(init PRIVATE init_ps1)
+endif()
diff --git a/src/init/include/init.h b/src/init/include/init.h
new file mode 100644
index 0000000..510245d
--- /dev/null
+++ b/src/init/include/init.h
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef INIT_H
+#define INIT_H
+
+int init_time(void);
+int init_boot(void);
+int init_vfs(void);
+int init_run(void);
+
+#endif
diff --git a/src/init/private_include/init/port.h b/src/init/private_include/init/port.h
new file mode 100644
index 0000000..f36ae5d
--- /dev/null
+++ b/src/init/private_include/init/port.h
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef INIT_PORT_H
+#define INIT_PORT_H
+
+int init_port_boot(void);
+int init_port_run(void);
+
+#endif
diff --git a/src/init/private_include/init/types.h b/src/init/private_include/init/types.h
new file mode 100644
index 0000000..f875caf
--- /dev/null
+++ b/src/init/private_include/init/types.h
@@ -0,0 +1,37 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef INIT_TYPES_H
+#define INIT_TYPES_H
+
+#include <aio.h>
+#include <sys/stat.h>
+#include <time.h>
+
+struct init
+{
+    struct aio *aio;
+    struct stat sb;
+    unsigned retries;
+    struct timespec last_retry;
+    int (*next)(struct init *);
+};
+
+extern struct init init_vars;
+
+#endif
diff --git a/src/init/ps1/CMakeLists.txt b/src/init/ps1/CMakeLists.txt
new file mode 100644
index 0000000..2cdc2de
--- /dev/null
+++ b/src/init/ps1/CMakeLists.txt
@@ -0,0 +1,33 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(init_ps1)
+add_subdirectory(src)
+target_include_directories(init_ps1 PRIVATE private_include)
+target_link_libraries(init_ps1
+    PUBLIC
+        c
+        init
+    PRIVATE
+        aio
+        drv_ps1_bios
+        drv_ps1_rcnt
+        drv_ps1_time
+        iso9660
+        kprintf
+        loop
+        state
+)
diff --git a/src/init/ps1/private_include/init/ps1/types.h b/src/init/ps1/private_include/init/ps1/types.h
new file mode 100644
index 0000000..118f37b
--- /dev/null
+++ b/src/init/ps1/private_include/init/ps1/types.h
@@ -0,0 +1,37 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef INIT_PS1_TYPES_H
+#define INIT_PS1_TYPES_H
+
+#include <aio.h>
+#include <sys/stat.h>
+#include <time.h>
+
+struct init_ps1
+{
+    struct aio *aio;
+    struct stat *sb;
+    unsigned retries;
+    struct timespec last_retry;
+    int (*next)(struct init_ps1 *);
+};
+
+extern struct init_ps1 init_ps1;
+
+#endif
diff --git a/src/init/ps1/src/CMakeLists.txt b/src/init/ps1/src/CMakeLists.txt
new file mode 100644
index 0000000..5a4af14
--- /dev/null
+++ b/src/init/ps1/src/CMakeLists.txt
@@ -0,0 +1,22 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(init_ps1 PRIVATE
+    boot.c
+    globalvars.c
+    run.c
+    time.c
+)
diff --git a/src/init/ps1/src/boot.c b/src/init/ps1/src/boot.c
new file mode 100644
index 0000000..9b42d47
--- /dev/null
+++ b/src/init/ps1/src/boot.c
@@ -0,0 +1,188 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init.h>
+#include <init/ps1/types.h>
+#include <aio.h>
+#include <iso9660.h>
+#include <kprintf.h>
+#include <loop.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <state.h>
+#include <time.h>
+
+struct mount
+{
+    struct aio *aio;
+};
+
+enum {RETRIES = 5};
+
+static int retry(struct init_ps1 *);
+
+static int mount_done(const enum state state, void *const args)
+{
+    struct mount *const m = args;
+
+    loop_rm_aio(m->aio);
+    aio_free(m->aio);
+    free(m);
+
+    if (state)
+        kprintf("Failed to mount ISO9660 filesystem\n");
+    else
+        kprintf("ISO996 filesystem mounted successfully\n");
+
+    return 0;
+}
+
+static int mount_cd(struct init_ps1 *const p)
+{
+    struct aio *aio = NULL;
+    struct mount *const m = malloc(sizeof *m);
+
+    if (!m)
+        goto failure;
+
+    const struct aio_mount fm =
+    {
+        .mount =
+        {
+            .src = "/dev/cd0",
+            .tgt = "/mnt/cdrom",
+            .mode = 0755
+        },
+
+        .type = "iso9660"
+    };
+
+    const struct aio_done d =
+    {
+        .args = m,
+        .f = mount_done
+    };
+
+    if (!(aio = aio_mount(&fm, &d)) || loop_add_aio(aio))
+        goto failure;
+
+    *m = (const struct mount){.aio = aio};
+    p->next = NULL;
+    kprintf("Mounting ISO996 filesystem from %s to %s\n",
+        fm.mount.src, fm.mount.tgt);
+    return 0;
+
+failure:
+    aio_free(aio);
+    free(m);
+    kprintf("Failed to mount ISO996 filesystem from %s to %s\n",
+        fm.mount.src, fm.mount.tgt);
+    return -1;
+}
+
+static int wait_retry(struct init_ps1 *const p)
+{
+    struct timespec ts;
+    const time_t last = p->last_retry.tv_sec, timeout = 5;
+
+    if (clock_gettime(CLOCK_REALTIME, &ts))
+        return -1;
+    else if (ts.tv_sec - last >= timeout)
+        p->next = retry;
+
+    return 0;
+}
+
+static int stat_done(const enum state s, void *const args)
+{
+    int ret = 0;
+    struct init_ps1 *const p = args;
+
+    if (s)
+    {
+        struct timespec ts;
+
+        if (!--p->retries || clock_gettime(CLOCK_REALTIME, &ts))
+        {
+            ret = -1;
+            goto end;
+        }
+
+        p->last_retry = ts;
+        p->next = wait_retry;
+    }
+    else
+    {
+        p->next = mount_cd;
+        kprintf("Successfully initialized CD-ROM (took %u attempts)\n",
+            RETRIES - p->retries + 1);
+    }
+
+end:
+    loop_rm_aio(p->aio);
+    aio_free(p->aio);
+    free(p->sb);
+    return ret;
+}
+
+static int retry(struct init_ps1 *const p)
+{
+    struct aio *aio = NULL;
+    struct stat *const sb = malloc(sizeof *sb);
+
+    if (!sb)
+        goto failure;
+
+    const struct fs_stat s = {.path = "/dev/cd0", .sb = sb};
+    const struct aio_done d = {.f = stat_done, .args = p};
+    const unsigned retries = p->retries;
+
+    if (!(aio = aio_stat(&s, &d)) || loop_add_aio(aio))
+        goto failure;
+
+    *p = (const struct init_ps1)
+    {
+        .aio = aio,
+        .sb = sb,
+        .retries = retries,
+        .last_retry = {.tv_sec = (time_t)-1}
+    };
+
+    kprintf("Initializing CD-ROM to %s (attempt %u)\n", s.path,
+        RETRIES - p->retries + 1);
+    return 0;
+
+failure:
+    free(aio);
+    free(sb);
+    return -1;
+}
+
+int init_port_boot(void)
+{
+    if (iso9660_register())
+        return -1;
+
+    init_ps1 = (const struct init_ps1)
+    {
+        .retries = RETRIES,
+        .next = retry
+    };
+
+    return 0;
+}
diff --git a/src/init/ps1/src/globalvars.c b/src/init/ps1/src/globalvars.c
new file mode 100644
index 0000000..6d4d2aa
--- /dev/null
+++ b/src/init/ps1/src/globalvars.c
@@ -0,0 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init/ps1/types.h>
+
+struct init_ps1 init_ps1;
diff --git a/src/init/ps1/src/run.c b/src/init/ps1/src/run.c
new file mode 100644
index 0000000..a0d022f
--- /dev/null
+++ b/src/init/ps1/src/run.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init.h>
+#include <init/ps1/types.h>
+
+int init_port_run(void)
+{
+    struct init_ps1 *const p = &init_ps1;
+
+    return p->next ? p->next(p) : 0;
+}
diff --git a/src/init/ps1/src/time.c b/src/init/ps1/src/time.c
new file mode 100644
index 0000000..72183c0
--- /dev/null
+++ b/src/init/ps1/src/time.c
@@ -0,0 +1,47 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init.h>
+#include <init/ps1/types.h>
+#include <drv/ps1/bios.h>
+#include <drv/ps1/rcnt.h>
+#include <drv/ps1/time.h>
+#include <time.h>
+
+int init_time(void)
+{
+    struct timespec ts;
+    const union drv_ps1_rcnt_cfg cfg =
+    {
+        .bits =
+        {
+            .reset = 1,
+            .repeat = 1,
+            .irq_tgt = 1,
+            .clocksrc = 3
+        }
+    };
+
+    if (clock_getres(CLOCK_REALTIME, &ts))
+        return -1;
+
+    const unsigned fcpu = 33000000;
+    const uint16_t target = (fcpu / 8) / (ts.tv_nsec / 1000);
+
+    return drv_ps1_rcnt_init(DRV_PS1_RCNT2, target, &cfg, drv_ps1_time_tick);
+}
diff --git a/src/init/src/CMakeLists.txt b/src/init/src/CMakeLists.txt
new file mode 100644
index 0000000..fd1c1e7
--- /dev/null
+++ b/src/init/src/CMakeLists.txt
@@ -0,0 +1,22 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(init PRIVATE
+    boot.c
+    run.c
+    vars.c
+    vfs.c
+)
diff --git a/src/init/src/boot.c b/src/init/src/boot.c
new file mode 100644
index 0000000..98352c2
--- /dev/null
+++ b/src/init/src/boot.c
@@ -0,0 +1,121 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init.h>
+#include <init/port.h>
+#include <init/types.h>
+#include <aio.h>
+#include <kprintf.h>
+#include <loop.h>
+#include <stdlib.h>
+#include <time.h>
+
+static int retry(struct init *);
+enum {RETRIES = 5};
+
+static int run(struct init *const init)
+{
+    return init_port_run();
+}
+
+static int init_port(struct init *const init)
+{
+    kprintf("tty initilization successful (took %u attempts)\n",
+        RETRIES - init->retries + 1);
+
+    if (init_port_boot())
+        return -1;
+
+    init->next = run;
+    return 0;
+}
+
+static int wait_retry(struct init *const init)
+{
+    struct timespec ts;
+    const time_t last = init->last_retry.tv_sec, timeout = 5;
+
+    if (clock_gettime(CLOCK_REALTIME, &ts))
+        return -1;
+    else if (ts.tv_sec - last >= timeout)
+        init->next = retry;
+
+    return 0;
+}
+
+static int stat_done(const enum state s, void *const args)
+{
+    int ret = 0;
+    struct init *const init = args;
+
+    if (s)
+    {
+        struct timespec ts;
+
+        if (!--init->retries || clock_gettime(CLOCK_REALTIME, &ts))
+        {
+            ret = -1;
+            goto end;
+        }
+
+        init->last_retry = ts;
+        init->next = wait_retry;
+    }
+    else
+        init->next = init_port;
+
+end:
+    loop_rm_aio(init->aio);
+    aio_free(init->aio);
+    return ret;
+}
+
+static int retry(struct init *const init)
+{
+    struct aio *aio = NULL;
+    const struct fs_stat s = {.path = "/dev/tty", .sb = &init->sb};
+    const struct aio_done d = {.f = stat_done, .args = init};
+    const unsigned retries = init->retries;
+
+    if (!(aio = aio_stat(&s, &d)) || loop_add_aio(aio))
+        goto failure;
+
+    *init = (const struct init)
+    {
+        .aio = aio,
+        .retries = retries,
+        .last_retry = {.tv_sec = (time_t)-1}
+    };
+
+    return 0;
+
+failure:
+    free(aio);
+    return -1;
+}
+
+int init_boot(void)
+{
+    init_vars = (const struct init)
+    {
+        .retries = RETRIES,
+        .next = retry
+    };
+
+    return 0;
+}
diff --git a/src/init/src/run.c b/src/init/src/run.c
new file mode 100644
index 0000000..835efd3
--- /dev/null
+++ b/src/init/src/run.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init.h>
+#include <init/types.h>
+
+int init_run(void)
+{
+    struct init *const p = &init_vars;
+
+    return p->next ? p->next(p) : 0;
+}
diff --git a/src/init/src/vars.c b/src/init/src/vars.c
new file mode 100644
index 0000000..ca5ff01
--- /dev/null
+++ b/src/init/src/vars.c
@@ -0,0 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init/types.h>
+
+struct init init_vars;
diff --git a/src/init/src/vfs.c b/src/init/src/vfs.c
new file mode 100644
index 0000000..cf7dd3d
--- /dev/null
+++ b/src/init/src/vfs.c
@@ -0,0 +1,86 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <init.h>
+#include <aio.h>
+#include <drv/drv.h>
+#include <io.h>
+#include <devfs.h>
+#include <rootfs.h>
+#include <iso9660.h>
+#include <sys/stat.h>
+#include <stddef.h>
+
+int init_vfs(void)
+{
+    const struct aio_mount m[] =
+    {
+        {
+            .mount =
+            {
+                .tgt = "/",
+                .mode = 0755
+            },
+
+            .type = "rootfs"
+        },
+
+        {
+            .mount =
+            {
+                .tgt = "/dev",
+                .mode = 0755
+            },
+
+            .type = "devfs"
+        }
+    };
+
+    const struct fs_mkdir mk[] =
+    {
+        {
+            .path = "/dev",
+            .mode = 0755
+        },
+
+        {
+            .path = "/mnt",
+            .mode = 0755
+        },
+
+        {
+            .path = "/mnt/cdrom",
+            .mode = 0755
+        }
+    };
+
+    if (rootfs_register()
+        || devfs_register()
+        || io_mount(m))
+        return -1;
+
+    for (size_t i = 0; i < sizeof mk / sizeof *mk; i++)
+        if (io_mkdir(&mk[i]))
+            return -1;
+
+    for (size_t i = 1; i < sizeof m / sizeof *m; i++)
+        if (io_mount(&m[i]))
+            return -1;
+
+    return 0;
+}
diff --git a/src/io/CMakeLists.txt b/src/io/CMakeLists.txt
new file mode 100644
index 0000000..62a5e13
--- /dev/null
+++ b/src/io/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(io)
+add_subdirectory(src)
+target_include_directories(io PUBLIC include)
+target_link_libraries(io PUBLIC aio)
diff --git a/src/io/include/io.h b/src/io/include/io.h
new file mode 100644
index 0000000..498ae03
--- /dev/null
+++ b/src/io/include/io.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef IO_H
+#define IO_H
+
+#include <aio.h>
+#include <sys/types.h>
+
+int io_mkdir(const struct fs_mkdir *m);
+int io_mount(const struct aio_mount *m);
+
+#endif
diff --git a/src/io/src/CMakeLists.txt b/src/io/src/CMakeLists.txt
new file mode 100644
index 0000000..63fd031
--- /dev/null
+++ b/src/io/src/CMakeLists.txt
@@ -0,0 +1,5 @@
+target_sources(io PRIVATE
+    mkdir.c
+    mount.c
+    write.c
+)
diff --git a/src/io/src/mkdir.c b/src/io/src/mkdir.c
new file mode 100644
index 0000000..4f97031
--- /dev/null
+++ b/src/io/src/mkdir.c
@@ -0,0 +1,40 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <io.h>
+#include <aio.h>
+#include <fs/fs.h>
+#include <errno.h>
+
+int io_mkdir(const struct fs_mkdir *const m)
+{
+    int ret = 0;
+    struct aio *const aio = aio_mkdir(m, NULL);
+    struct aio_poll p = {.aio = aio};
+
+    if (!aio || aio_poll(&p, -1) < 0 || p.error)
+    {
+        ret = -1;
+
+        if (p.error)
+            errno = p.error;
+    }
+
+    aio_free(aio);
+    return ret;
+}
diff --git a/src/io/src/mount.c b/src/io/src/mount.c
new file mode 100644
index 0000000..b885ac7
--- /dev/null
+++ b/src/io/src/mount.c
@@ -0,0 +1,35 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <io.h>
+#include <aio.h>
+#include <fs/fs.h>
+#include <stddef.h>
+
+int io_mount(const struct aio_mount *const m)
+{
+    int ret = 0;
+    struct aio *const aio = aio_mount(m, NULL);
+    struct aio_poll p = {.aio = aio};
+
+    if (!aio || aio_poll(&p, -1) < 0 || p.error)
+        ret = -1;
+
+    aio_free(aio);
+    return ret;
+}
diff --git a/src/io/src/write.c b/src/io/src/write.c
new file mode 100644
index 0000000..82bafe0
--- /dev/null
+++ b/src/io/src/write.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <io.h>
+#include <aio.h>
+#include <fs/fs.h>
+#include <stddef.h>
+
+int io_write(const char *const path, const void *const buf, const size_t n)
+{
+    return -1;
+}
diff --git a/src/kprintf/CMakeLists.txt b/src/kprintf/CMakeLists.txt
new file mode 100644
index 0000000..b847938
--- /dev/null
+++ b/src/kprintf/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(kprintf ${src})
+add_subdirectory(src)
+target_include_directories(kprintf PUBLIC include PRIVATE private_include)
+target_link_libraries(kprintf PUBLIC c PRIVATE aio)
diff --git a/src/kprintf/include/kprintf.h b/src/kprintf/include/kprintf.h
new file mode 100644
index 0000000..606adc1
--- /dev/null
+++ b/src/kprintf/include/kprintf.h
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef KPRINTF_H
+#define KPRINTF_H
+
+int kprintf(const char *fmt, ...);
+
+#endif
diff --git a/src/kprintf/src/CMakeLists.txt b/src/kprintf/src/CMakeLists.txt
new file mode 100644
index 0000000..abd972e
--- /dev/null
+++ b/src/kprintf/src/CMakeLists.txt
@@ -0,0 +1,17 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(kprintf PRIVATE kprintf.c)
diff --git a/src/kprintf/src/kprintf.c b/src/kprintf/src/kprintf.c
new file mode 100644
index 0000000..d5504fe
--- /dev/null
+++ b/src/kprintf/src/kprintf.c
@@ -0,0 +1,96 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <kprintf.h>
+#include <aio.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+static void writechar(const char c, void *const args)
+{
+    static char buf[128];
+    static size_t bufi;
+    struct fs_fd *fd = args;
+    struct aio *aio = NULL;
+
+    buf[bufi++] = c;
+
+    if (c == '\n' || bufi >= sizeof buf - 1)
+    {
+        const struct fs_write w =
+        {
+            .buf = buf,
+            .fd = fd,
+            .n = bufi
+        };
+
+        if (!(aio = aio_write(&w, NULL)))
+            goto end;
+
+        struct aio_poll p = (const struct aio_poll){.aio = aio};
+
+        aio_poll(&p, -1);
+        bufi = 0;
+    }
+
+end:
+    aio_free(aio);
+}
+
+int kprintf(const char *const fmt, ...)
+{
+    va_list ap;
+    struct fs_fd fd;
+    struct timespec ts;
+    const struct fs_open o =
+    {
+        .fd = &fd,
+        .path = "/dev/tty",
+        .mode = O_WRONLY
+    };
+
+    struct aio *aio_op = NULL;
+
+    va_start(ap, fmt);
+
+    if (clock_gettime(CLOCK_REALTIME, &ts))
+        goto failure;
+
+    if (!(aio_op = aio_open(&o, NULL)))
+        goto failure;
+
+    struct aio_poll p = {.aio = aio_op};
+
+    if (aio_poll(&p, -1) < 0
+        || p.error
+        || fctprintf(writechar, &fd, "[%lld.%03ld] ", ts.tv_sec,
+            ts.tv_nsec / 1000000) < 0
+        || fctvprintf(writechar, &fd, fmt, ap) < 0)
+        goto failure;
+
+    va_end(ap);
+    return 0;
+
+failure:
+    aio_free(aio_op);
+    va_end(ap);
+    return -1;
+}
diff --git a/src/libc/CMakeLists.txt b/src/libc/CMakeLists.txt
index 952df35..e0663cf 100644
--- a/src/libc/CMakeLists.txt
+++ b/src/libc/CMakeLists.txt
@@ -1,4 +1,4 @@
-# wanix, a Unix-like operating system for WebAssembly
+# wanix, a Unix-like operating system for WebAssembly applications.
 # Copyright (C) 2025  Xavier Del Campo Romero
 #
 # This program is free software: you can redistribute it and/or modify
@@ -15,16 +15,15 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 set(src
-    "src/errno.c"
-    "src/free.c"
-    "src/malloc.c"
-    "src/memcmp.c"
-    "src/memcpy.c"
-    "src/memset.c"
-    "src/strchr.c"
-    "src/streams.c"
-    "src/strerror.c"
-    "src/strlen.c"
+    printf/printf.c
+    tinyalloc/tinyalloc.c
 )
 add_library(c ${src})
-target_include_directories(c PUBLIC "include" PRIVATE "private_include")
+add_subdirectory(src)
+target_include_directories(c PUBLIC include printf
+    PRIVATE private_include tinyalloc)
+target_link_libraries(c PRIVATE aio fs drv)
+
+if(PS1_BUILD)
+    add_subdirectory(src/ps1)
+endif()
diff --git a/src/libc/include/errno.h b/src/libc/include/errno.h
index 0456645..60037ef 100644
--- a/src/libc/include/errno.h
+++ b/src/libc/include/errno.h
@@ -1,3 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef _ERRNO_H
 #define _ERRNO_H
 
@@ -5,7 +23,7 @@ extern int errno;
 
 enum
 {
-    OK,
+    SUCCESS,
     EPERM,
     ENOENT,
     ESRCH,
@@ -38,6 +56,105 @@ enum
     EROFS,
     EMLINK,
     EPIPE,
+    EDOM,
+    ERANGE,
+    EDEADLK,
+    ENAMETOOLONG,
+    ENOLCK,
+    ENOSYS,
+    ENOTEMPTY,
+    ELOOP,
+    ENOMSG,
+    EIDRM,
+    ECHRNG,
+    EL2NSYNC,
+    EL3HLT,
+    EL3RST,
+    ELNRNG,
+    EUNATCH,
+    ENOCSI,
+    EL2HLT,
+    EBADE,
+    EBADR,
+    EXFULL,
+    ENOANO,
+    EBADRQC,
+    EBADSLT,
+    EBFONT,
+    ENOSTR,
+    ENODATA,
+    ETIME,
+    ENOSR,
+    ENONET,
+    ENOPKG,
+    EREMOTE,
+    ENOLINK,
+    EADV,
+    ESRMNT,
+    ECOMM,
+    EPROTO,
+    EMULTIHOP,
+    EDOTDOT,
+    EBADMSG,
+    EOVERFLOW,
+    ENOTUNIQ,
+    EBADFD,
+    EREMCHG,
+    ELIBACC,
+    ELIBBAD,
+    ELIBSCN,
+    ELIBMAX,
+    ELIBEXEC,
+    EILSEQ,
+    ERESTART,
+    ESTRPIPE,
+    EUSERS,
+    ENOTSOCK,
+    EDESTADDRREQ,
+    EMSGSIZE,
+    EPROTOTYPE,
+    ENOPROTOOPT,
+    EPROTONOSUPPORT,
+    ESOCKTNOSUPPORT,
+    ENOTSUP,
+    EPFNOSUPPORT,
+    EAFNOSUPPORT,
+    EADDRINUSE,
+    EADDRNOTAVAIL,
+    ENETDOWN,
+    ENETUNREACH,
+    ENETRESET,
+    ECONNABORTED,
+    ECONNRESET,
+    ENOBUFS,
+    EISCONN,
+    ENOTCONN,
+    ESHUTDOWN,
+    ETOOMANYREFS,
+    ETIMEDOUT,
+    ECONNREFUSED,
+    EHOSTDOWN,
+    EHOSTUNREACH,
+    EALREADY,
+    EINPROGRESS,
+    ESTALE,
+    EUCLEAN,
+    ENOTNAM,
+    ENAVAIL,
+    EISNAM,
+    EREMOTEIO,
+    EDQUOT,
+    ENOMEDIUM,
+    EMEDIUMTYPE,
+    ECANCELED,
+    ENOKEY,
+    EKEYEXPIRED,
+    EKEYREVOKED,
+    EKEYREJECTED,
+    EOWNERDEAD,
+    ENOTRECOVERABLE,
+    ERFKILL,
+    EHWPOISON
 };
 
 #endif
diff --git a/src/libc/include/fcntl.h b/src/libc/include/fcntl.h
new file mode 100644
index 0000000..9713a9f
--- /dev/null
+++ b/src/libc/include/fcntl.h
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef _FCNTL_H
+#define _FCNTL_H
+
+enum
+{
+    O_RDONLY = 1,
+    O_WRONLY = 1 << 1,
+    O_RDWR = O_RDONLY | O_WRONLY
+};
+
+#endif
diff --git a/src/libc/include/inttypes.h b/src/libc/include/inttypes.h
new file mode 100644
index 0000000..f07e94b
--- /dev/null
+++ b/src/libc/include/inttypes.h
@@ -0,0 +1,34 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#ifndef _INTTYPES_H
+#define _INTTYPES_H
+
+#define PRIu8 "hhu"
+#define PRIu16 "hu"
+#define PRIu32 "lu"
+#define PRIu64 "llu"
+#define PRIi8 "hhd"
+#define PRIi16 "hd"
+#define PRIi32 "ld"
+#define PRIi64 "lld"
+#define PRIx8 "hhx"
+#define PRIx16 "hx"
+#define PRIx32 "lx"
+#define PRIx64 "llx"
+
+#endif
diff --git a/src/libc/include/stdint.h b/src/libc/include/stdint.h
new file mode 100644
index 0000000..d2701b1
--- /dev/null
+++ b/src/libc/include/stdint.h
@@ -0,0 +1,33 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef _STDINT_H
+#define _STDINT_H
+
+typedef unsigned char uint8_t, uint_least8_t;
+typedef signed char int8_t, int_least8_t;
+typedef unsigned short uint16_t, uint_least16_t;
+typedef short int16_t, int_least16_t;
+typedef unsigned uintptr_t, uint32_t, uint_least32_t, uint_fast8_t,
+    uint_fast16_t, uint_fast32_t;
+typedef int intptr_t, int32_t, int_least32_t, int_fast8_t, int_fast16_t,
+    int_fast32_t;
+typedef unsigned long long uint64_t, uint_least64_t, uint_fast64_t, uintmax_t;
+typedef long long int64_t, int_least64_t, int_fast64_t, intmax_t;
+
+#endif
diff --git a/src/libc/include/stdio.h b/src/libc/include/stdio.h
index 1d0e27c..7c6504a 100644
--- a/src/libc/include/stdio.h
+++ b/src/libc/include/stdio.h
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -19,17 +19,14 @@
 #ifndef _STDIO_H
 #define _STDIO_H
 
-enum
-{
-    EOF = -1
-};
-
+enum {EOF = -1};
 typedef struct __file FILE;
 
-FILE *fopen(const char *__path, const char *__mode);
-int printf(const char *__fmt, ...);
-int fprintf(FILE *__stream, const char *__fmt, ...);
+int puts(const char *__s);
+int putchar(int __c);
 
 extern FILE *stdin, *stdout, *stderr;
 
+#include <printf.h>
+
 #endif
diff --git a/src/libc/include/stdlib.h b/src/libc/include/stdlib.h
index 4065f1c..0d2fee7 100644
--- a/src/libc/include/stdlib.h
+++ b/src/libc/include/stdlib.h
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -24,8 +24,12 @@
 #define EXIT_SUCCESS 0
 #define EXIT_FAILURE 1
 
+#define abort() __abort(__FILE__, __LINE__)
+
 void *malloc(size_t __n);
 void *calloc(size_t __nemb, size_t __size);
+void *realloc(void *__ptr, size_t __size);
 void free(void *__p);
+void __abort(const char *__file, int __lineno);
 
 #endif
diff --git a/src/libc/include/string.h b/src/libc/include/string.h
index 20c9cf3..0a7b7f2 100644
--- a/src/libc/include/string.h
+++ b/src/libc/include/string.h
@@ -1,3 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef _STRING_H
 #define _STRING_H
 
@@ -7,7 +25,12 @@ int memcmp(const void *__s1, const void *__s2, size_t __n);
 void *memcpy(void *__dst, const void *__src, size_t __n);
 void *memset(void *__dst, int __c, size_t __n);
 char *strchr(const char *__s, int __n);
+int strcmp(const char *__a, const char *__b);
+char *strdup(const char *__s);
+int strncmp(const char *__a, const char *__b, size_t __n);
+char *strndup(const char *__s, size_t __n);
 char *strerror(int errnum);
 size_t strlen(const char *__s);
+char *strrchr(const char *__s, int __c);
 
 #endif
diff --git a/src/libc/include/sys/stat.h b/src/libc/include/sys/stat.h
new file mode 100644
index 0000000..0a5dd23
--- /dev/null
+++ b/src/libc/include/sys/stat.h
@@ -0,0 +1,40 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SYS_STAT_H
+#define _SYS_STAT_H
+
+#include <sys/types.h>
+#include <time.h>
+
+struct stat
+{
+    dev_t st_dev;
+    ino_t st_ino;
+    mode_t st_mode;
+    nlink_t st_nlink;
+    uid_t st_uid;
+    gid_t st_gid;
+    dev_t st_rdev;
+    off_t st_size;
+    struct timespec st_atim, st_mtim, st_ctim;
+    blksize_t st_blksize;
+    blkcnt_t st_blocks;
+};
+
+#endif
diff --git a/src/libc/include/sys/types.h b/src/libc/include/sys/types.h
new file mode 100644
index 0000000..3175740
--- /dev/null
+++ b/src/libc/include/sys/types.h
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SYS_TYPES_H
+#define _SYS_TYPES_H
+
+typedef unsigned dev_t, mode_t, nlink_t, uid_t, gid_t, blksize_t, blkcnt_t;
+typedef unsigned long ino_t, off_t;
+
+#endif
diff --git a/src/libc/include/time.h b/src/libc/include/time.h
new file mode 100644
index 0000000..99a8e6c
--- /dev/null
+++ b/src/libc/include/time.h
@@ -0,0 +1,39 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TIME_H
+#define _TIME_H
+
+typedef enum
+{
+    CLOCK_REALTIME
+} clockid_t;
+
+typedef long long time_t;
+
+struct timespec
+{
+    time_t tv_sec;
+    long tv_nsec;
+};
+
+int clock_getres(clockid_t __id, struct timespec *__ts);
+int clock_gettime(clockid_t __id, struct timespec *__ts);
+int clock_settime(clockid_t __id, const struct timespec *__ts);
+
+#endif
diff --git a/src/libc/private_include/libc/file.h b/src/libc/private_include/libc/file.h
index 3ba554c..2a55ced 100644
--- a/src/libc/private_include/libc/file.h
+++ b/src/libc/private_include/libc/file.h
@@ -1,6 +1,8 @@
 #ifndef LIBC_FILE_H
 #define LIBC_FILE_H
 
+#include <aio.h>
+
 enum
 {
     STDIN_FILENO,
@@ -10,6 +12,7 @@ enum
 
 struct __file
 {
+    struct aio *aio;
 };
 
 #endif
diff --git a/src/libc/private_include/libc/malloc.h b/src/libc/private_include/libc/malloc.h
new file mode 100644
index 0000000..3662496
--- /dev/null
+++ b/src/libc/private_include/libc/malloc.h
@@ -0,0 +1,24 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBC_MALLOC_H
+#define LIBC_MALLOC_H
+
+extern int __malloc_ta_init;
+
+#endif
diff --git a/src/libc/src/CMakeLists.txt b/src/libc/src/CMakeLists.txt
new file mode 100644
index 0000000..8fa0428
--- /dev/null
+++ b/src/libc/src/CMakeLists.txt
@@ -0,0 +1,40 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(c PRIVATE
+    abort.c
+    calloc.c
+    clock_getres.c
+    clock_gettime.c
+    clock_settime.c
+    errno.c
+    free.c
+    malloc.c
+    memcmp.c
+    memcpy.c
+    memset.c
+    realloc.c
+    strchr.c
+    strcmp.c
+    strdup.c
+    streams.c
+    strerror.c
+    strlen.c
+    strncmp.c
+    strndup.c
+    strrchr.c
+    ta_init.c
+)
diff --git a/src/libc/src/abort.c b/src/libc/src/abort.c
new file mode 100644
index 0000000..9dc31a8
--- /dev/null
+++ b/src/libc/src/abort.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+void __abort(const char *const filename, const int lineno)
+{
+    printf("%s:%d: aborted\n", filename, lineno);
+
+    for (;;)
+        ;
+}
diff --git a/src/libc/src/calloc.c b/src/libc/src/calloc.c
new file mode 100644
index 0000000..5d1c24f
--- /dev/null
+++ b/src/libc/src/calloc.c
@@ -0,0 +1,32 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+
+void *calloc(const size_t nemb, const size_t size)
+{
+    const size_t n = nemb * size;
+    void *const ret = malloc(n);
+
+    if (ret)
+        memset(ret, 0, n);
+
+    return ret;
+}
diff --git a/src/libc/src/clock_getres.c b/src/libc/src/clock_getres.c
new file mode 100644
index 0000000..bbd719e
--- /dev/null
+++ b/src/libc/src/clock_getres.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <time.h>
+#include <drv/time.h>
+
+int clock_getres(const clockid_t id, struct timespec *const ts)
+{
+    return drv_time_getres(id, ts);
+}
diff --git a/src/libc/src/clock_gettime.c b/src/libc/src/clock_gettime.c
new file mode 100644
index 0000000..8e38f01
--- /dev/null
+++ b/src/libc/src/clock_gettime.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <time.h>
+#include <drv/time.h>
+
+int clock_gettime(const clockid_t id, struct timespec *const ts)
+{
+    return drv_time_gettime(id, ts);
+}
diff --git a/src/libc/src/clock_settime.c b/src/libc/src/clock_settime.c
new file mode 100644
index 0000000..17a64bc
--- /dev/null
+++ b/src/libc/src/clock_settime.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <time.h>
+#include <drv/time.h>
+
+int clock_settime(const clockid_t id, const struct timespec *const ts)
+{
+    return drv_time_settime(id, ts);
+}
diff --git a/src/libc/src/free.c b/src/libc/src/free.c
index d89a80a..1aa9f4d 100644
--- a/src/libc/src/free.c
+++ b/src/libc/src/free.c
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -16,8 +16,14 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+#include <tinyalloc.h>
+#include <libc/malloc.h>
 #include <stdlib.h>
 
 void free(void *const ptr)
 {
+    if (!ptr)
+        return;
+    else if (!__malloc_ta_init || !ta_free(ptr))
+        abort();
 }
diff --git a/src/libc/src/malloc.c b/src/libc/src/malloc.c
index aa5ff31..4955af5 100644
--- a/src/libc/src/malloc.c
+++ b/src/libc/src/malloc.c
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -17,9 +17,32 @@
  */
 
 #include <stdlib.h>
+#include <libc/malloc.h>
+#include <errno.h>
+#include <tinyalloc.h>
+#include <stdint.h>
 #include <stddef.h>
 
-void *malloc(const size_t __n)
+void *malloc(const size_t n)
 {
-    return NULL;
+    extern char __bss_end[], __ram_end[];
+
+    if (!__malloc_ta_init)
+    {
+        enum {BLOCKSZ = 256};
+        const size_t blocks = (__ram_end - __bss_end + 1) / BLOCKSZ;
+
+        /* README.md states 16 is a "good default value". */
+        if (!ta_init(__bss_end, __ram_end, blocks, 16, sizeof (intmax_t)))
+            abort();
+
+        __malloc_ta_init = 1;
+    }
+
+    void *const ret = ta_alloc(n);
+
+    if (!ret)
+        errno = ENOMEM;
+
+    return ret;
 }
diff --git a/src/libc/src/memset.c b/src/libc/src/memset.c
index 90eb611..653eb76 100644
--- a/src/libc/src/memset.c
+++ b/src/libc/src/memset.c
@@ -1,3 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <string.h>
 #include <stddef.h>
 
diff --git a/src/libc/src/mkdir.c b/src/libc/src/mkdir.c
new file mode 100644
index 0000000..8e9209a
--- /dev/null
+++ b/src/libc/src/mkdir.c
@@ -0,0 +1,37 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <sys/stat.h>
+#include <aio.h>
+
+int mkdir(const char *const path, const mode_t m)
+{
+    const struct aio_mkdir mk =
+    {
+        .path = path,
+        .mode = m
+    };
+
+    struct aio *const aio = aio_mkdir(&mk);
+    const struct aio_poll p = {.aio = aio};
+
+    if (!aio || aio_poll(&p, 1, -1) < 0)
+        return -1;
+
+    return 0;
+}
diff --git a/src/libc/src/ps1/CMakeLists.txt b/src/libc/src/ps1/CMakeLists.txt
new file mode 100644
index 0000000..1cf3d2d
--- /dev/null
+++ b/src/libc/src/ps1/CMakeLists.txt
@@ -0,0 +1,17 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(c PRIVATE "putchar.c")
diff --git a/src/libc/src/ps1/putchar.c b/src/libc/src/ps1/putchar.c
new file mode 100644
index 0000000..085a37e
--- /dev/null
+++ b/src/libc/src/ps1/putchar.c
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+int putchar(const int c)
+{
+    return EOF;
+}
+
+void _putchar(const char c)
+{
+    putchar(c);
+}
diff --git a/src/libc/src/puts.c b/src/libc/src/puts.c
new file mode 100644
index 0000000..0c22ed7
--- /dev/null
+++ b/src/libc/src/puts.c
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+int puts(const char *s)
+{
+    for (; *s; s++)
+        if (putchar(*s) < 0)
+            return -1;
+
+    return putchar('\n');
+}
diff --git a/src/libc/src/realloc.c b/src/libc/src/realloc.c
new file mode 100644
index 0000000..2d830ab
--- /dev/null
+++ b/src/libc/src/realloc.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <tinyalloc.h>
+#include <stdlib.h>
+
+void *realloc(void *const ptr, const size_t size)
+{
+    return ta_realloc(ptr, size);
+}
diff --git a/src/libc/src/strcmp.c b/src/libc/src/strcmp.c
new file mode 100644
index 0000000..dfd66b2
--- /dev/null
+++ b/src/libc/src/strcmp.c
@@ -0,0 +1,27 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+
+int strcmp(const char *a, const char *b)
+{
+    while (*a && *b && *a++ == *b++)
+        ;
+
+    return !!*a || !!*b;
+}
diff --git a/src/libc/src/strdup.c b/src/libc/src/strdup.c
new file mode 100644
index 0000000..71993de
--- /dev/null
+++ b/src/libc/src/strdup.c
@@ -0,0 +1,32 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+char *strdup(const char *const s)
+{
+    const size_t n = strlen(s) + 1;
+    char *const ret = malloc(n);
+
+    if (!ret)
+        return NULL;
+
+    memcpy(ret, s, n);
+    return ret;
+}
diff --git a/src/libc/src/strerror.c b/src/libc/src/strerror.c
index 6444e98..4ccd924 100644
--- a/src/libc/src/strerror.c
+++ b/src/libc/src/strerror.c
@@ -5,6 +5,7 @@ char *strerror(const int errnum)
 {
     static const char *const s[] =
     {
+        [0] = "Success",
         [EPERM] = "Operation not permitted",
         [ENOENT] = "No such file or directory",
         [ESRCH] = "No such process",
@@ -37,6 +38,105 @@ char *strerror(const int errnum)
         [EROFS] = "Read-only file system",
         [EMLINK] = "Too many links",
         [EPIPE] = "Broken pipe",
+        [EDOM] = "Numerical argument out of domain",
+        [ERANGE] = "Numerical result out of range",
+        [EDEADLK] = "Resource deadlock avoided",
+        [ENAMETOOLONG] = "File name too long",
+        [ENOLCK] = "No locks available",
+        [ENOSYS] = "Function not implemented",
+        [ENOTEMPTY] = "Directory not empty",
+        [ELOOP] = "Too many levels of symbolic links",
+        [ENOMSG] = "No message of desired type",
+        [EIDRM] = "Identifier removed",
+        [ECHRNG] = "Channel number out of range",
+        [EL2NSYNC] = "Level 2 not synchronized",
+        [EL3HLT] = "Level 3 halted",
+        [EL3RST] = "Level 3 reset",
+        [ELNRNG] = "Link number out of range",
+        [EUNATCH] = "Protocol driver not attached",
+        [ENOCSI] = "No CSI structure available",
+        [EL2HLT] = "Level 2 halted",
+        [EBADE] = "Invalid exchange",
+        [EBADR] = "Invalid request descriptor",
+        [EXFULL] = "Exchange full",
+        [ENOANO] = "No anode",
+        [EBADRQC] = "Invalid request code",
+        [EBADSLT] = "Invalid slot",
+        [EBFONT] = "Bad font file format",
+        [ENOSTR] = "Device not a stream",
+        [ENODATA] = "No data available",
+        [ETIME] = "Timer expired",
+        [ENOSR] = "Out of streams resources",
+        [ENONET] = "Machine is not on the network",
+        [ENOPKG] = "Package not installed",
+        [EREMOTE] = "Object is remote",
+        [ENOLINK] = "Link has been severed",
+        [EADV] = "Advertise error",
+        [ESRMNT] = "Srmount error",
+        [ECOMM] = "Communication error on send",
+        [EPROTO] = "Protocol error",
+        [EMULTIHOP] = "Multihop attempted",
+        [EDOTDOT] = "RFS specific error",
+        [EBADMSG] = "Bad message",
+        [EOVERFLOW] = "Value too large for defined data type",
+        [ENOTUNIQ] = "Name not unique on network",
+        [EBADFD] = "File descriptor in bad state",
+        [EREMCHG] = "Remote address changed",
+        [ELIBACC] = "Can not access a needed shared library",
+        [ELIBBAD] = "Accessing a corrupted shared library",
+        [ELIBSCN] = ".lib section in a.out corrupted",
+        [ELIBMAX] = "Attempting to link in too many shared libraries",
+        [ELIBEXEC] = "Cannot exec a shared library directly",
+        [EILSEQ] = "Invalid or incomplete multibyte or wide character",
+        [ERESTART] = "Interrupted system call should be restarted",
+        [ESTRPIPE] = "Streams pipe error",
+        [EUSERS] = "Too many users",
+        [ENOTSOCK] = "Socket operation on non-socket",
+        [EDESTADDRREQ] = "Destination address required",
+        [EMSGSIZE] = "Message too long",
+        [EPROTOTYPE] = "Protocol wrong type for socket",
+        [ENOPROTOOPT] = "Protocol not available",
+        [EPROTONOSUPPORT] = "Protocol not supported",
+        [ESOCKTNOSUPPORT] = "Socket type not supported",
+        [ENOTSUP] = "Operation not supported",
+        [EPFNOSUPPORT] = "Protocol family not supported",
+        [EAFNOSUPPORT] = "Address family not supported by protocol",
+        [EADDRINUSE] = "Address already in use",
+        [EADDRNOTAVAIL] = "Cannot assign requested address",
+        [ENETDOWN] = "Network is down",
+        [ENETUNREACH] = "Network is unreachable",
+        [ENETRESET] = "Network dropped connection on reset",
+        [ECONNABORTED] = "Software caused connection abort",
+        [ECONNRESET] = "Connection reset by peer",
+        [ENOBUFS] = "No buffer space available",
+        [EISCONN] = "Transport endpoint is already connected",
+        [ENOTCONN] = "Transport endpoint is not connected",
+        [ESHUTDOWN] = "Cannot send after transport endpoint shutdown",
+        [ETOOMANYREFS] = "Too many references: cannot splice",
+        [ETIMEDOUT] = "Connection timed out",
+        [ECONNREFUSED] = "Connection refused",
+        [EHOSTDOWN] = "Host is down",
+        [EHOSTUNREACH] = "No route to host",
+        [EALREADY] = "Operation already in progress",
+        [EINPROGRESS] = "Operation now in progress",
+        [ESTALE] = "Stale file handle",
+        [EUCLEAN] = "Structure needs cleaning",
+        [ENOTNAM] = "Not a XENIX named type file",
+        [ENAVAIL] = "No XENIX semaphores available",
+        [EISNAM] = "Is a named type file",
+        [EREMOTEIO] = "Remote I/O error",
+        [EDQUOT] = "Disk quota exceeded",
+        [ENOMEDIUM] = "No medium found",
+        [EMEDIUMTYPE] = "Wrong medium type",
+        [ECANCELED] = "Operation canceled",
+        [ENOKEY] = "Required key not available",
+        [EKEYEXPIRED] = "Key has expired",
+        [EKEYREVOKED] = "Key has been revoked",
+        [EKEYREJECTED] = "Key was rejected by service",
+        [EOWNERDEAD] = "Owner died",
+        [ENOTRECOVERABLE] = "State not recoverable",
+        [ERFKILL] = "Operation not possible due to RF-kill",
+        [EHWPOISON] = "Memory page has hardware error",
     };
 
     if (errnum < 0 || errnum >= sizeof s / sizeof *s)
diff --git a/src/libc/src/strncmp.c b/src/libc/src/strncmp.c
new file mode 100644
index 0000000..c7ba771
--- /dev/null
+++ b/src/libc/src/strncmp.c
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stddef.h>
+
+int strncmp(const char *a, const char *b, const size_t n)
+{
+    for (size_t i = 0; i < n; i++)
+        if (*a && *b && *a++ != *b++)
+            return -1;
+
+    return 0;
+}
diff --git a/src/libc/src/strndup.c b/src/libc/src/strndup.c
new file mode 100644
index 0000000..d35a42e
--- /dev/null
+++ b/src/libc/src/strndup.c
@@ -0,0 +1,32 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+char *strndup(const char *const s, const size_t n)
+{
+    char *const ret = malloc(n + 1);
+
+    if (!ret)
+        return NULL;
+
+    memcpy(ret, s, n);
+    ret[n] = '\0';
+    return ret;
+}
diff --git a/src/libc/src/strrchr.c b/src/libc/src/strrchr.c
new file mode 100644
index 0000000..e18a4c0
--- /dev/null
+++ b/src/libc/src/strrchr.c
@@ -0,0 +1,31 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stddef.h>
+
+char *strrchr(const char *s, const int c)
+{
+    const size_t len = strlen(s);
+
+    for (size_t i = len; i <= len; i--)
+        if (s[i] == c)
+            return (char *)&s[i];
+
+    return NULL;
+}
diff --git a/src/libc/src/ta_init.c b/src/libc/src/ta_init.c
new file mode 100644
index 0000000..b38e45e
--- /dev/null
+++ b/src/libc/src/ta_init.c
@@ -0,0 +1,21 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <libc/malloc.h>
+
+int __malloc_ta_init;
diff --git a/src/loop/CMakeLists.txt b/src/loop/CMakeLists.txt
new file mode 100644
index 0000000..4645d01
--- /dev/null
+++ b/src/loop/CMakeLists.txt
@@ -0,0 +1,20 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(loop)
+add_subdirectory(src)
+target_include_directories(loop PUBLIC include PRIVATE private_include)
+target_link_libraries(loop PUBLIC aio PRIVATE fs init)
diff --git a/src/loop/include/loop.h b/src/loop/include/loop.h
new file mode 100644
index 0000000..dd833d1
--- /dev/null
+++ b/src/loop/include/loop.h
@@ -0,0 +1,28 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LOOP_H
+#define LOOP_H
+
+#include <aio.h>
+
+int loop_run(void);
+int loop_add_aio(struct aio *a);
+int loop_rm_aio(struct aio *a);
+
+#endif
diff --git a/src/loop/private_include/loop/types.h b/src/loop/private_include/loop/types.h
new file mode 100644
index 0000000..d42a042
--- /dev/null
+++ b/src/loop/private_include/loop/types.h
@@ -0,0 +1,26 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LOOP_TYPES_H
+#define LOOP_TYPES_H
+
+#include <aio.h>
+
+struct aio_poll *loop_aio_head, *loop_aio_tail;
+
+#endif
diff --git a/src/loop/src/CMakeLists.txt b/src/loop/src/CMakeLists.txt
new file mode 100644
index 0000000..ab55275
--- /dev/null
+++ b/src/loop/src/CMakeLists.txt
@@ -0,0 +1,21 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(loop PRIVATE
+    add_aio.c
+    rm_aio.c
+    run.c
+)
diff --git a/src/loop/src/add_aio.c b/src/loop/src/add_aio.c
new file mode 100644
index 0000000..8174acc
--- /dev/null
+++ b/src/loop/src/add_aio.c
@@ -0,0 +1,43 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <loop.h>
+#include <loop/types.h>
+#include <aio.h>
+#include <stdlib.h>
+
+int loop_add_aio(struct aio *const a)
+{
+    struct aio_poll *const p = malloc(sizeof *p);
+
+    if (!p)
+        return -1;
+
+    *p = (const struct aio_poll){.aio = a};
+
+    if (!loop_aio_head)
+        loop_aio_head = p;
+    else if (loop_aio_tail)
+    {
+        loop_aio_tail->next = p;
+        p->prev = loop_aio_tail;
+    }
+
+    loop_aio_tail = p;
+    return 0;
+}
diff --git a/src/loop/src/rm_aio.c b/src/loop/src/rm_aio.c
new file mode 100644
index 0000000..b6c678a
--- /dev/null
+++ b/src/loop/src/rm_aio.c
@@ -0,0 +1,48 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <loop.h>
+#include <loop/types.h>
+#include <aio.h>
+#include <stdlib.h>
+
+int loop_rm_aio(struct aio *const aio)
+{
+    for (struct aio_poll *p = loop_aio_head; p; p = p->next)
+        if (p->aio == aio)
+        {
+            struct aio_poll *const prev = p->prev, *const next = p->next;
+
+            if (!prev)
+            {
+                loop_aio_head = next;
+
+                if (next)
+                    next->prev = NULL;
+            }
+            else if ((prev->next = next))
+                next->prev = prev;
+            else
+                loop_aio_tail = prev;
+
+            free(p);
+            return 0;
+        }
+
+    return -1;
+}
diff --git a/src/loop/src/run.c b/src/loop/src/run.c
new file mode 100644
index 0000000..666aa33
--- /dev/null
+++ b/src/loop/src/run.c
@@ -0,0 +1,33 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <loop.h>
+#include <loop/types.h>
+#include <aio.h>
+#include <fs/fs.h>
+#include <init.h>
+
+int loop_run(void)
+{
+    if (fs_update()
+        || aio_poll(loop_aio_head, 0) < 0
+        || init_run())
+        return -1;
+
+    return 0;
+}
diff --git a/src/main.c b/src/main.c
index 99d4c95..0d38aba 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,5 @@
 /*
- * wanix, a Unix-like operating system for WebAssembly
+ * wanix, a Unix-like operating system for WebAssembly applications.
  * Copyright (C) 2025  Xavier Del Campo Romero
  *
  * This program is free software: you can redistribute it and/or modify
@@ -16,31 +16,19 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-#include <aio.h>
-#include <errno.h>
-#include <stdio.h>
+#include <init.h>
+#include <gfx/gfx.h>
+#include <loop.h>
 #include <stdlib.h>
-#include <string.h>
 
 int main(void)
 {
-    int ret = EXIT_FAILURE;
-    struct aio *aio = aio_open("/media/cdrom/", "rb");
+    if (init_time() || gfx_init() || init_boot() || init_vfs())
+        return EXIT_FAILURE;
 
-    if (!aio)
-    {
-        fprintf(stderr, "%s: aio_open failed: %s\n", __func__, strerror(errno));
-        goto end;
-    }
+    for (;;)
+        if (loop_run())
+            return EXIT_FAILURE;
 
-    ret = EXIT_SUCCESS;
-
-end:
-    if (aio && aio_close(aio))
-    {
-        fprintf(stderr, "%s: aio_close failed: %s\n", __func__, strerror(errno));
-        ret = EXIT_FAILURE;
-    }
-
-    return ret;
+    return EXIT_SUCCESS;
 }
diff --git a/src/ps1/CMakeLists.txt b/src/ps1/CMakeLists.txt
index 6ba4543..c455ef3 100644
--- a/src/ps1/CMakeLists.txt
+++ b/src/ps1/CMakeLists.txt
@@ -1,5 +1,27 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 target_link_libraries(${PROJECT_NAME} PRIVATE c)
 target_link_libraries(nanowasm PRIVATE c)
+target_link_libraries(dynstr PRIVATE c)
 target_sources(${PROJECT_NAME} PRIVATE start.c)
 target_link_options(${PROJECT_NAME} PRIVATE
         -T${CMAKE_CURRENT_LIST_DIR}/playstation.x)
+add_custom_target(system_cnf ALL
+    ${CMAKE_COMMAND} -E copy_if_different
+        ${CMAKE_CURRENT_LIST_DIR}/system.cnf ${cdroot}
+)
+add_dependencies(iso system_cnf)
diff --git a/src/ps1/playstation.x b/src/ps1/playstation.x
index 00a1a74..71a4c34 100644
--- a/src/ps1/playstation.x
+++ b/src/ps1/playstation.x
@@ -68,5 +68,7 @@ SECTIONS
 	__bss_start = ADDR(.bss);
 	__bss_end = ADDR(.bss) + SIZEOF(.bss);
 
+	__ram_end = 0x8020FFFF;
+
 	__scratchpad = 0x1f800000;
 }
diff --git a/src/ps1/start.c b/src/ps1/start.c
index 09ca6c9..c5558fe 100644
--- a/src/ps1/start.c
+++ b/src/ps1/start.c
@@ -1,7 +1,7 @@
 __attribute__((__section__(".text.startup"))) void _start(void)
 {
     int main(void);
-    extern char *__bss_start, *__bss_end;
+    extern char __bss_start[], __bss_end[];
 
     for (char *s = __bss_start; s < __bss_end;  s++)
         *s = 0;
diff --git a/src/ps1/system.cnf b/src/ps1/system.cnf
index 1c3aebe..8f875bf 100644
--- a/src/ps1/system.cnf
+++ b/src/ps1/system.cnf
@@ -1,4 +1,4 @@
-BOOT = cdrom:\wanix.exe;1
-TCB = 1
-EVENT = 8
-STACK = 801FF800
+BOOT = cdrom:\wanix.exe;1

+TCB = 1

+EVENT = 16

+STACK = 801FF800

diff --git a/src/state/CMakeLists.txt b/src/state/CMakeLists.txt
new file mode 100644
index 0000000..a208361
--- /dev/null
+++ b/src/state/CMakeLists.txt
@@ -0,0 +1,18 @@
+# wanix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(state INTERFACE)
+target_include_directories(state INTERFACE include)
diff --git a/src/state/include/state.h b/src/state/include/state.h
new file mode 100644
index 0000000..8b93a65
--- /dev/null
+++ b/src/state/include/state.h
@@ -0,0 +1,29 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef STATE_H
+#define STATE_H
+
+enum state
+{
+    STATE_OK,
+    STATE_AGAIN,
+    STATE_FATAL
+};
+
+#endif