diff options
Diffstat (limited to 'libpcsxcore')
| -rw-r--r-- | libpcsxcore/cdrom.c | 69 | ||||
| -rw-r--r-- | libpcsxcore/cdrom.h | 2 |
2 files changed, 70 insertions, 1 deletions
diff --git a/libpcsxcore/cdrom.c b/libpcsxcore/cdrom.c index 9771a60c..dd40bbf1 100644 --- a/libpcsxcore/cdrom.c +++ b/libpcsxcore/cdrom.c @@ -1081,6 +1081,75 @@ void cdrWrite3(unsigned char rt) { break; } } +
+ /*
+ GameShark CDX 3.3
+
+ TODO: Can we relax the rules?
+ */
+ if (rt == 0 && cdr.Ctrl == 0xd8 && cdr.Readed == 1) {
+ u32 i;
+
+
+ // low-level status access
+ SetResultSize(15);
+
+
+ i = stat.Status;
+ if (CDR_getStatus(&stat) != -1) {
+ // Hack: Fake CDROM seek / spin time
+ static int seek_time = 0;
+
+ if (stat.Type == 0xff) {
+ }
+ else if (stat.Status & 0x10) {
+ // unknown #1 - status?
+ // unknown #2 - case open?
+
+ cdr.Result[0] = 0x11;
+ cdr.Result[1] = 0x80;
+ }
+ else if ( i & 0x10 ) {
+ cdr.Result[0] = 0x13;
+ cdr.Result[1] = 0x80;
+
+ // minimum 50 tries for GS CDX 3.3
+ seek_time = 50;
+ }
+ else if ( seek_time ) {
+ cdr.Result[0] = 0x13;
+ cdr.Result[1] = 0x80;
+
+ seek_time--;
+ }
+ else
+ {
+ cdr.Result[0] = 0x01;
+ cdr.Result[1] = 0x00;
+ }
+
+ // unknown #3
+ cdr.Result[2] = 0;
+
+ // unknown #4 - error?
+ cdr.Result[3] = 0;
+
+ // unknown #5-14
+ cdr.Result[4] = 0;
+ cdr.Result[5] = 0;
+ cdr.Result[6] = 0;
+ cdr.Result[7] = 0;
+ cdr.Result[8] = 0;
+ cdr.Result[9] = 0;
+ cdr.Result[10] = 0;
+ cdr.Result[11] = 0;
+ cdr.Result[12] = 0;
+ cdr.Result[13] = 0;
+
+ // unknown #15 - error?
+ cdr.Result[14] = 0;
+ }
+ }
} void psxDma3(u32 madr, u32 bcr, u32 chcr) { diff --git a/libpcsxcore/cdrom.h b/libpcsxcore/cdrom.h index c5d448cd..07b62924 100644 --- a/libpcsxcore/cdrom.h +++ b/libpcsxcore/cdrom.h @@ -56,7 +56,7 @@ typedef struct { unsigned char Prev[4]; unsigned char Param[8]; - unsigned char Result[8]; + unsigned char Result[15]; unsigned char ParamC; unsigned char ParamP; |