#if 0
#define CDR_LOG_I SysPrintf
#else
-#define CDR_LOG_I(...)
+#define CDR_LOG_I log_unhandled
#endif
#if 0
#define CDR_LOG_IO SysPrintf
unsigned char ResultP;
unsigned char ResultReady;
unsigned char Cmd;
- unsigned char Readed;
+ unsigned char unused4;
unsigned char SetlocPending;
u32 Reading;
xa_decode_t Xa;
- u32 unused4;
+ u16 FifoOffset;
+ u16 FifoSize;
u16 CmdInProgress;
u8 Irq1Pending;
u8 AttenuatorLeftToLeftT, AttenuatorLeftToRightT;
u8 AttenuatorRightToRightT, AttenuatorRightToLeftT;
} cdr;
-static unsigned char *pTransfer;
static s16 read_buf[CD_FRAMESIZE_RAW/2];
/* CD-ROM magic numbers */
memcpy(cdr.Transfer, buf, DATA_SIZE);
CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
CDR_LOG("cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
- cdr.Readed = 0;
+ if (cdr.FifoOffset < 2048 + 12)
+ CDR_LOG("cdrom: FifoOffset(1) %d/%d\n", cdr.FifoOffset, cdr.FifoSize);
}
static void cdrReadInterrupt(void)
}
unsigned char cdrRead2(void) {
- unsigned char ret;
+ unsigned char ret = 0;
- if (cdr.Readed == 0) {
- ret = 0;
- } else {
- ret = *pTransfer++;
- }
+ if (cdr.FifoOffset < cdr.FifoSize)
+ ret = cdr.Transfer[cdr.FifoOffset++];
+ else
+ CDR_LOG_I("cdrom: read empty fifo (%d)\n", cdr.FifoSize);
CDR_LOG_IO("cdr r2.dat: %02x\n", ret);
return ret;
return;
}
- if ((rt & 0x80) && cdr.Readed == 0) {
- cdr.Readed = 1;
- pTransfer = cdr.Transfer;
-
+ // test: Viewpoint
+ if ((rt & 0x80) && cdr.FifoOffset < cdr.FifoSize) {
+ CDR_LOG("cdrom: FifoOffset(2) %d/%d\n", cdr.FifoOffset, cdr.FifoSize);
+ }
+ else if (rt & 0x80) {
switch (cdr.Mode & 0x30) {
case MODE_SIZE_2328:
case 0x00:
- pTransfer += 12;
+ cdr.FifoOffset = 12;
+ cdr.FifoSize = 2048 + 12;
break;
case MODE_SIZE_2340:
- pTransfer += 0;
- break;
-
default:
+ cdr.FifoOffset = 0;
+ cdr.FifoSize = 2340;
break;
}
}
+ else if (!(rt & 0xc0))
+ cdr.FifoOffset = DATA_SIZE; // fifo empty
}
void psxDma3(u32 madr, u32 bcr, u32 chcr) {
CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
- switch (chcr) {
+ switch (chcr & 0x71000000) {
case 0x11000000:
- case 0x11400100:
- if (cdr.Readed == 0) {
- CDR_LOG_I("psxDma3() Log: *** DMA 3 *** NOT READY\n");
- break;
- }
-
- cdsize = (bcr & 0xffff) * 4;
-
- // Ape Escape: bcr = 0001 / 0000
- // - fix boot
- if( cdsize == 0 )
- {
- switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
- case MODE_SIZE_2340: cdsize = 2340; break;
- case MODE_SIZE_2328: cdsize = 2328; break;
- default:
- case MODE_SIZE_2048: cdsize = 2048; break;
- }
- }
-
-
ptr = (u8 *)PSXM(madr);
if (ptr == NULL) {
- CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
+ CDR_LOG_I("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
break;
}
+ cdsize = (((bcr - 1) & 0xffff) + 1) * 4;
+
/*
GS CDX: Enhancement CD crash
- Setloc 0:0:0
- CdlPlay
- Spams DMA3 and gets buffer overrun
*/
- size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
+ size = DATA_SIZE - cdr.FifoOffset;
if (size > cdsize)
size = cdsize;
if (size > 0)
{
- memcpy(ptr, pTransfer, size);
+ memcpy(ptr, cdr.Transfer + cdr.FifoOffset, size);
+ cdr.FifoOffset += size;
+ psxCpu->Clear(madr, size / 4);
}
+ if (size < cdsize)
+ CDR_LOG_I("cdrom: dma3 %d/%d\n", size, cdsize);
- psxCpu->Clear(madr, cdsize / 4);
- pTransfer += cdsize;
+ CDRDMA_INT((cdsize/4) * 24);
- if( chcr == 0x11400100 ) {
+ HW_DMA3_CHCR &= SWAPu32(~0x10000000);
+ if (chcr & 0x100) {
HW_DMA3_MADR = SWAPu32(madr + cdsize);
- CDRDMA_INT( (cdsize/4) / 4 );
+ HW_DMA3_BCR &= SWAPu32(0xffff0000);
}
- else if( chcr == 0x11000000 ) {
- // CDRDMA_INT( (cdsize/4) * 1 );
+ else {
// halted
- psxRegs.cycle += (cdsize/4) * 24/2;
- CDRDMA_INT(16);
+ psxRegs.cycle += (cdsize/4) * 24 - 20;
}
return;
default:
- CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
+ CDR_LOG_I("psxDma3() Log: Unknown cddma %x\n", chcr);
break;
}
cdr.Stat = NoIntr;
cdr.DriveState = DRIVESTATE_STANDBY;
cdr.StatP = STATUS_ROTATING;
- pTransfer = cdr.Transfer;
+ cdr.FifoOffset = DATA_SIZE; // fifo empty
// BIOS player - default values
cdr.AttenuatorLeftToLeft = 0x80;
if (Mode == 1) {
cdr.ParamP = cdr.ParamC;
- tmp = pTransfer - cdr.Transfer;
+ tmp = cdr.FifoOffset;
}
gzfreeze(&tmp, sizeof(tmp));
if (Mode == 0) {
getCdInfo();
- pTransfer = cdr.Transfer + tmp;
+ cdr.FifoOffset = tmp;
+ cdr.FifoSize = (cdr.Mode & 0x20) ? 2340 : 2048 + 12;
// read right sub data
tmpp[0] = btoi(cdr.Prev[0]);