cdrom: partially emulate the fifo

[pcsx_rearmed.git] / libpcsxcore / psxdma.c

diff --git a/libpcsxcore/psxdma.c b/libpcsxcore/psxdma.c
index cb84fbc..e6f68fc 100644 (file)
--- a/libpcsxcore/psxdma.c
+++ b/libpcsxcore/psxdma.c
@@ -54,7 +54,7 @@ void psxDma4(u32 madr, u32 bcr, u32 chcr) { // SPU
                        words = (bcr >> 16) * (bcr & 0xffff);
                        SPU_writeDMAMem(ptr, words * 2, psxRegs.cycle);
                        HW_DMA4_MADR = SWAPu32(madr + words * 4);
-                       SPUDMA_INT(words / 2);
+                       SPUDMA_INT(words * 4);
                        return;
 
                case 0x01000200: //spu to cpu transfer
@@ -73,7 +73,7 @@ void psxDma4(u32 madr, u32 bcr, u32 chcr) { // SPU
                        psxCpu->Clear(madr, words);
 
                        HW_DMA4_MADR = SWAPu32(madr + words * 4);
-                       SPUDMA_INT(words / 2);
+                       SPUDMA_INT(words * 4);
                        return;
 
 #ifdef PSXDMA_LOG
@@ -185,7 +185,7 @@ void psxDma2(u32 madr, u32 bcr, u32 chcr) { // GPU
                        size = GPU_dmaChain((u32 *)psxM, madr & 0x1fffff);
                        if ((int)size <= 0)
                                size = gpuDmaChainSize(madr);
-                       HW_GPU_STATUS &= ~PSXGPU_nBUSY;
+                       HW_GPU_STATUS &= SWAP32(~PSXGPU_nBUSY);
 
                        // we don't emulate progress, just busy flag and end irq,
                        // so pretend we're already at the last block
@@ -217,7 +217,7 @@ void gpuInterrupt() {
                HW_DMA2_CHCR &= SWAP32(~0x01000000);
                DMA_INTERRUPT(2);
        }
-       HW_GPU_STATUS |= PSXGPU_nBUSY; // GPU no longer busy
+       HW_GPU_STATUS |= SWAP32(PSXGPU_nBUSY); // GPU no longer busy
 }
 
 void psxDma6(u32 madr, u32 bcr, u32 chcr) {
@@ -245,7 +245,7 @@ void psxDma6(u32 madr, u32 bcr, u32 chcr) {
                        *mem-- = SWAP32((madr - 4) & 0xffffff);
                        madr -= 4;
                }
-               mem++; *mem = 0xffffff;
+               *++mem = SWAP32(0xffffff);
 
                //GPUOTCDMA_INT(size);
                // halted