Refactor libpsxcd, add new CD-ROM APIs, fix SPU DMA read

1 files changed, 7 insertions, 0 deletions

diff --git a/libpsn00b/psxspu/common.c b/libpsn00b/psxspu/common.c
index a340af6..5dae473 100644
--- a/libpsn00b/psxspu/common.c
+++ b/libpsn00b/psxspu/common.c
@@ -44,6 +44,11 @@ static size_t _dma_transfer(uint32_t *data, size_t length, int write) {
 		length += DMA_CHUNK_LENGTH - 1;
 	}
 
+	// Increase bus delay for DMA reads
+	SPU_DELAY_SIZE &= 0xf0ffffff;
+	if (!write)
+		SPU_DELAY_SIZE = 2 << 24;
+
 	SPU_CTRL &= 0xffcf; // Disable DMA request
 	_wait_status(0x0030, 0x0000);
 
@@ -102,6 +107,8 @@ static size_t _manual_write(const uint16_t *data, size_t length) {
 /* Public API */
 
 void SpuInit(void) {
+	SPU_DELAY_SIZE = 0x200931e1;
+
 	SPU_CTRL = 0x0000; // SPU disabled
 	_wait_status(0x001f, 0x0000);