// also handles seek
void cdrPlayInterrupt()
{
if (cdr.Seeked == SEEK_PENDING) {
if (cdr.Stat) {
CDR_LOG_I("cdrom: seek stat hack\n");
CDRMISC_INT(0x1000);
return;
}
SetResultSize(1);
cdr.StatP |= STATUS_ROTATING;
cdr.StatP &= ~STATUS_SEEK;
cdr.Result[0] = cdr.StatP;
cdr.Seeked = SEEK_DONE;
if (cdr.Irq == 0) {
cdr.Stat = Complete;
setIrq();
}
if (cdr.SetlocPending) {
memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
cdr.SetlocPending = 0;
}
Find_CurTrack(cdr.SetSectorPlay);
ReadTrack(cdr.SetSectorPlay);
cdr.TrackChanged = FALSE;
}
if (!cdr.Play) return;
CDR_LOG( "CDDA - %d:%d:%d\n",
cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
StopCdda();
cdr.TrackChanged = TRUE;
}
if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
cdrPlayInterrupt_Autopause();
if (!cdr.Play) return;
cdr.SetSectorPlay[2]++;
if (cdr.SetSectorPlay[2] == 75) {
cdr.SetSectorPlay[2] = 0;
cdr.SetSectorPlay[1]++;
if (cdr.SetSectorPlay[1] == 60) {
cdr.SetSectorPlay[1] = 0;
cdr.SetSectorPlay[0]++;
}
}
CDRMISC_INT(cdReadTime);
// update for CdlGetlocP/autopause
generate_subq(cdr.SetSectorPlay);
}
static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
if (cdr.Irq != 0) {
if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
cdr.IrqRepeated = 1;
CDR_INT(ecycle);
return;
}
CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
}
cdr.Irq = irq;
cdr.eCycle = ecycle;
CDR_INT(ecycle);
}
static void ReadTrack(const u8 *time)
{
unsigned char tmp[3];
struct SubQ *subq;
u16 crc;
tmp[0] = itob(time[0]);
tmp[1] = itob(time[1]);
tmp[2] = itob(time[2]);
if (memcmp(cdr.Prev, tmp, 3) == 0)
return;
CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
cdr.RErr = CDR_readTrack(tmp);
memcpy(cdr.Prev, tmp, 3);
//senquack - PPF patch file support; not yet added (TODO?)
#if 0
if (CheckSBI(time))
return;
#endif
subq = (struct SubQ *)CDR_getBufferSub();
if (subq != NULL && cdr.CurTrack == 1) {
crc = calcCrc((u8 *)subq + 12, 10);
if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
cdr.subq.Track = subq->TrackNumber;
cdr.subq.Index = subq->IndexNumber;
memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
}
else {
CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
tmp[0], tmp[1], tmp[2]);
}
}
else {
generate_subq(time);
}
CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
cdr.subq.Track, cdr.subq.Index,
cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
}
void cdrInterrupt() {
u16 Irq = cdr.Irq;
int no_busy_error = 0;
int start_rotating = 0;
int error = 0;
int delay;
// Reschedule IRQ
if (cdr.Stat) {
CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
CDR_INT(0x1000);
return;
}
cdr.Ctrl &= ~0x80;
// default response
SetResultSize(1);
cdr.Result[0] = cdr.StatP;
cdr.Stat = Acknowledge;
if (cdr.IrqRepeated) {
cdr.IrqRepeated = 0;
if (cdr.eCycle > psxRegs.cycle) {
CDR_INT(cdr.eCycle);
goto finish;
}
}
cdr.Irq = 0;
switch (Irq) {
case CdlSync:
// TOOD: sometimes/always return error?
break;
case CdlNop:
if (cdr.DriveState != DRIVESTATE_LID_OPEN)
cdr.StatP &= ~STATUS_SHELLOPEN;
no_busy_error = 1;
break;
case CdlSetloc:
break;
do_CdlPlay:
case CdlPlay:
StopCdda();
if (cdr.Seeked == SEEK_PENDING) {
// XXX: wrong, should seek instead..
cdr.Seeked = SEEK_DONE;
}
if (cdr.SetlocPending) {
memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
cdr.SetlocPending = 0;
}
// BIOS CD Player
// - Pause player, hit Track 01/02/../xx (Setloc issued!!)
if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
CDR_LOG("PLAY Resume @ %d:%d:%d\n",
cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
}
else
{
int track = btoi( cdr.Param[0] );
if (track <= cdr.ResultTN[1])
cdr.CurTrack = track;
CDR_LOG("PLAY track %d\n", cdr.CurTrack);
if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
cdr.SetSectorPlay[0] = cdr.ResultTD[2];
cdr.SetSectorPlay[1] = cdr.ResultTD[1];
cdr.SetSectorPlay[2] = cdr.ResultTD[0];
}
}
/*
Rayman: detect track changes
- fixes logo freeze
Twisted Metal 2: skip PREGAP + starting accurate SubQ
- plays tracks without retry play
Wild 9: skip PREGAP + starting accurate SubQ
- plays tracks without retry play
*/
Find_CurTrack(cdr.SetSectorPlay);
ReadTrack(cdr.SetSectorPlay);
cdr.TrackChanged = FALSE;
if (!Config.Cdda)
CDR_play(cdr.SetSectorPlay);
// Vib Ribbon: gameplay checks flag
cdr.StatP &= ~STATUS_SEEK;
cdr.Result[0] = cdr.StatP;
cdr.StatP |= STATUS_PLAY;
// BIOS player - set flag again
cdr.Play = TRUE;
CDRMISC_INT( cdReadTime );
start_rotating = 1;
break;
case CdlForward:
// TODO: error 80 if stopped
cdr.Stat = Complete;
// GameShark CD Player: Calls 2x + Play 2x
if( cdr.FastForward == 0 ) cdr.FastForward = 2;
else cdr.FastForward++;
cdr.FastBackward = 0;
break;
case CdlBackward:
cdr.Stat = Complete;
// GameShark CD Player: Calls 2x + Play 2x
if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
else cdr.FastBackward++;
cdr.FastForward = 0;
break;
case CdlStandby:
if (cdr.DriveState != DRIVESTATE_STOPPED) {
error = ERROR_INVALIDARG;
goto set_error;
}
AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
start_rotating = 1;
break;
case CdlStandby + 0x100:
cdr.Stat = Complete;
break;
case CdlStop:
if (cdr.Play) {
// grab time for current track
CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
cdr.SetSectorPlay[0] = cdr.ResultTD[2];
cdr.SetSectorPlay[1] = cdr.ResultTD[1];
cdr.SetSectorPlay[2] = cdr.ResultTD[0];
}
StopCdda();
StopReading();
delay = 0x800;
if (cdr.DriveState == DRIVESTATE_STANDBY)
delay = cdReadTime * 30 / 2;
cdr.DriveState = DRIVESTATE_STOPPED;
AddIrqQueue(CdlStop + 0x100, delay);
break;
case CdlStop + 0x100:
cdr.StatP &= ~STATUS_ROTATING;
cdr.Result[0] = cdr.StatP;
cdr.Stat = Complete;
break;
case CdlPause:
/*
Gundam Battle Assault 2: much slower (*)
- Fixes boot, gameplay
Hokuto no Ken 2: slower
- Fixes intro + subtitles
InuYasha - Feudal Fairy Tale: slower
- Fixes battles
*/
AddIrqQueue(CdlPause + 0x100, cdReadTime * 3);
cdr.Ctrl |= 0x80;
break;
case CdlPause + 0x100:
cdr.StatP &= ~STATUS_READ;
cdr.Result[0] = cdr.StatP;
cdr.Stat = Complete;
break;
case CdlInit:
AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
no_busy_error = 1;
start_rotating = 1;
break;
case CdlInit + 0x100:
cdr.Stat = Complete;
break;
case CdlMute:
cdr.Muted = TRUE;
break;
case CdlDemute:
cdr.Muted = FALSE;
break;
case CdlSetfilter:
cdr.File = cdr.Param[0];
cdr.Channel = cdr.Param[1];
break;
case CdlSetmode:
no_busy_error = 1;
break;
case CdlGetmode:
SetResultSize(6);
cdr.Result[1] = cdr.Mode;
cdr.Result[2] = cdr.File;
cdr.Result[3] = cdr.Channel;
cdr.Result[4] = 0;
cdr.Result[5] = 0;
no_busy_error = 1;
break;
case CdlGetlocL:
SetResultSize(8);
memcpy(cdr.Result, cdr.Transfer, 8);
break;
case CdlGetlocP:
SetResultSize(8);
memcpy(&cdr.Result, &cdr.subq, 8);
if (!cdr.Play && !cdr.Reading)
cdr.Result[1] = 0; // HACK?
break;
case CdlReadT: // SetSession?
// really long
AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
start_rotating = 1;
break;
case CdlReadT + 0x100:
cdr.Stat = Complete;
break;
case CdlGetTN:
SetResultSize(3);
if (CDR_getTN(cdr.ResultTN) == -1) {
cdr.Stat = DiskError;
cdr.Result[0] |= STATUS_ERROR;
} else {
cdr.Stat = Acknowledge;
cdr.Result[1] = itob(cdr.ResultTN[0]);
cdr.Result[2] = itob(cdr.ResultTN[1]);
}
break;
case CdlGetTD:
cdr.Track = btoi(cdr.Param[0]);
SetResultSize(4);
if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
cdr.Stat = DiskError;
cdr.Result[0] |= STATUS_ERROR;
} else {
cdr.Stat = Acknowledge;
cdr.Result[0] = cdr.StatP;
cdr.Result[1] = itob(cdr.ResultTD[2]);
cdr.Result[2] = itob(cdr.ResultTD[1]);
cdr.Result[3] = itob(cdr.ResultTD[0]);
}
break;
case CdlSeekL:
case CdlSeekP:
StopCdda();
StopReading();
cdr.StatP |= STATUS_SEEK;
/*
Crusaders of Might and Magic = 0.5x-4x
- fix cutscene speech start
Eggs of Steel = 2x-?
- fix new game
Medievil = ?-4x
- fix cutscene speech
Rockman X5 = 0.5-4x
- fix capcom logo
*/
CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
cdr.Seeked = SEEK_PENDING;
start_rotating = 1;
break;
case CdlTest:
switch (cdr.Param[0]) {
case 0x20: // System Controller ROM Version
SetResultSize(4);
memcpy(cdr.Result, Test20, 4);
break;
case 0x22:
SetResultSize(8);
memcpy(cdr.Result, Test22, 4);
break;
case 0x23: case 0x24:
SetResultSize(8);
memcpy(cdr.Result, Test23, 4);
break;
}
no_busy_error = 1;
break;
case CdlID:
AddIrqQueue(CdlID + 0x100, 20480);
break;
case CdlID + 0x100:
SetResultSize(8);
cdr.Result[0] = cdr.StatP;
cdr.Result[1] = 0;
cdr.Result[2] = 0;
cdr.Result[3] = 0;
// 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
cdr.Result[1] = 0xc0;
}
else {
if (stat.Type == 2)
cdr.Result[1] |= 0x10;
if (CdromId[0] == '\0')
cdr.Result[1] |= 0x80;
}
cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
strncpy((char *)&cdr.Result[4], "PCSX", 4);
cdr.Stat = Complete;
break;
case CdlReset:
// yes, it really sets STATUS_SHELLOPEN
cdr.StatP |= STATUS_SHELLOPEN;
cdr.DriveState = DRIVESTATE_RESCAN_CD;
CDRLID_INT(20480);
no_busy_error = 1;
start_rotating = 1;
break;
case CdlGetQ:
// TODO?
CDR_LOG_I("got CdlGetQ\n");
break;
case CdlReadToc:
AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
no_busy_error = 1;
start_rotating = 1;
break;
case CdlReadToc + 0x100:
cdr.Stat = Complete;
no_busy_error = 1;
break;
case CdlReadN:
case CdlReadS:
if (cdr.SetlocPending) {
memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
cdr.SetlocPending = 0;
}
Find_CurTrack(cdr.SetSectorPlay);
if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
// Read* acts as play for cdda tracks in cdda mode
goto do_CdlPlay;
cdr.Reading = 1;
cdr.FirstSector = 1;
// Fighting Force 2 - update subq time immediately
// - fixes new game
ReadTrack(cdr.SetSectorPlay);
// Crusaders of Might and Magic - update getlocl now
// - fixes cutscene speech
{
u8 *buf = CDR_getBuffer();
if (buf != NULL)
memcpy(cdr.Transfer, buf, 8);
}
/*
Duke Nukem: Land of the Babes - seek then delay read for one frame
- fixes cutscenes
C-12 - Final Resistance - doesn't like seek
*/
if (cdr.Seeked != SEEK_DONE) {
cdr.StatP |= STATUS_SEEK;
cdr.StatP &= ~STATUS_READ;
// Crusaders of Might and Magic - use short time
// - fix cutscene speech (startup)
// ??? - use more accurate seek time later
CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
} else {
cdr.StatP |= STATUS_READ;
cdr.StatP &= ~STATUS_SEEK;
CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
}
cdr.Result[0] = cdr.StatP;
start_rotating = 1;
break;
default:
CDR_LOG_I("Invalid command: %02x\n", Irq);
error = ERROR_INVALIDCMD;
// FALLTHROUGH
set_error:
SetResultSize(2);
cdr.Result[0] = cdr.StatP | STATUS_ERROR;
cdr.Result[1] = error;
cdr.Stat = DiskError;
break;
}
if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
cdr.DriveState = DRIVESTATE_STANDBY;
cdr.StatP |= STATUS_ROTATING;
}
if (!no_busy_error) {
switch (cdr.DriveState) {
case DRIVESTATE_LID_OPEN:
case DRIVESTATE_RESCAN_CD:
case DRIVESTATE_PREPARE_CD:
SetResultSize(2);
cdr.Result[0] = cdr.StatP | STATUS_ERROR;
cdr.Result[1] = ERROR_NOT_READY;
cdr.Stat = DiskError;
break;
}
}
finish:
setIrq();
cdr.ParamC = 0;
#ifdef CDR_LOG_CMD_IRQ
{
int i;
SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
!!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
for (i = 0; i < cdr.ResultC; i++)
SysPrintf("%02x ", cdr.Result[i]);
SysPrintf("\n");
}
#endif
}
// also handles seek
void cdrPlayInterrupt()
{
if (cdr.Seeked == SEEK_PENDING) {
if (cdr.Stat) {
CDR_LOG_I("cdrom: seek stat hack\n");
CDRMISC_INT(0x1000);
return;
}
SetResultSize(1);
cdr.StatP |= STATUS_ROTATING;
cdr.StatP &= ~STATUS_SEEK;
cdr.Result[0] = cdr.StatP;
cdr.Seeked = SEEK_DONE;
if (cdr.Irq == 0) {
cdr.Stat = Complete;
setIrq();
}
if (cdr.SetlocPending) {
memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
cdr.SetlocPending = 0;
}
Find_CurTrack(cdr.SetSectorPlay);
ReadTrack(cdr.SetSectorPlay);
cdr.TrackChanged = FALSE;
}
if (!cdr.Play) return;
CDR_LOG( "CDDA - %d:%d:%d\n",
cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
StopCdda();
cdr.TrackChanged = TRUE;
}
if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
cdrPlayInterrupt_Autopause();
if (!cdr.Play) return;
cdr.SetSectorPlay[2]++;
if (cdr.SetSectorPlay[2] == 75) {
cdr.SetSectorPlay[2] = 0;
cdr.SetSectorPlay[1]++;
if (cdr.SetSectorPlay[1] == 60) {
cdr.SetSectorPlay[1] = 0;
cdr.SetSectorPlay[0]++;
}
}
CDRMISC_INT(cdReadTime);
// update for CdlGetlocP/autopause
generate_subq(cdr.SetSectorPlay);
//senquack - Copy/pasted CHUI's ResetIoCycle() call into this new function
// TODO: Are these really beneficial/necessary?
// CHUI: Añado ResetIoCycle para permite que en el proximo salto entre en psxBranchTest
ResetIoCycle();
}