Exemplo n.º 1
0
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
}
Exemplo n.º 2
0
void cdrWrite1(unsigned char rt) {
	int i;

#ifdef CDR_LOG
	CDR_LOG("cdrWrite1() Log: CD1 write: %x (%s)\n", rt, CmdName[rt]);
#endif
//	psxHu8(0x1801) = rt;
    cdr.Cmd = rt;
	cdr.OCUP = 0;

#ifdef CDRCMD_DEBUG
	SysPrintf("cdrWrite1() Log: CD1 write: %x (%s)", rt, CmdName[rt]);
	if (cdr.ParamC) {
		SysPrintf(" Param[%d] = {", cdr.ParamC);
		for (i=0;i<cdr.ParamC;i++) SysPrintf(" %x,", cdr.Param[i]);
		SysPrintf("}\n");
	} else SysPrintf("\n");
#endif

	if (cdr.Ctrl & 0x1) return;

    switch(cdr.Cmd) {
    	case CdlSync:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlNop:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlSetloc:
			StopReading();
			cdr.Seeked = 0;
        	for (i=0; i<3; i++) cdr.SetSector[i] = btoi(cdr.Param[i]);
        	cdr.SetSector[3] = 0;
/*        	if ((cdr.SetSector[0] | cdr.SetSector[1] | cdr.SetSector[2]) == 0) {
				*(u32 *)cdr.SetSector = *(u32 *)cdr.SetSectorSeek;
			}*/
			cdr.Ctrl|= 0x80;
        	cdr.Stat = NoIntr;
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlPlay:
        	if (!cdr.SetSector[0] && !cdr.SetSector[1] && !cdr.SetSector[2]) {
            	if (CDR_getTN(cdr.ResultTN) != -1) {
	                if (cdr.CurTrack > cdr.ResultTN[1]) cdr.CurTrack = cdr.ResultTN[1];
                    if (CDR_getTD((unsigned char)(cdr.CurTrack), cdr.ResultTD) != -1) {
		               	int tmp = cdr.ResultTD[2];
                        cdr.ResultTD[2] = cdr.ResultTD[0];
						cdr.ResultTD[0] = tmp;
	                    if (!Config.Cdda) CDR_play(cdr.ResultTD);
					}
                }
			}
    		else if (!Config.Cdda) CDR_play(cdr.SetSector);
    		cdr.Play = 1;
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
    		break;

    	case CdlForward:
        	if (cdr.CurTrack < 0xaa) cdr.CurTrack++;
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlBackward:
        	if (cdr.CurTrack > 1) cdr.CurTrack--;
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlReadN:
			cdr.Irq = 0;
			StopReading();
			cdr.Ctrl|= 0x80;
        	cdr.Stat = NoIntr; 
			StartReading(1);
        	break;

    	case CdlStandby:
			StopCdda();
			StopReading();
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlStop:
			StopCdda();
			StopReading();
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlPause:
			StopCdda();
			StopReading();
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr;
    		AddIrqQueue(cdr.Cmd, 0x40000);
        	break;

		case CdlReset:
    	case CdlInit:
			StopCdda();
			StopReading();
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlMute:
        	cdr.Muted = 0;
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlDemute:
        	cdr.Muted = 1;
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlSetfilter:
        	cdr.File = cdr.Param[0];
        	cdr.Channel = cdr.Param[1];
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlSetmode:
#ifdef CDR_LOG
			CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
#endif 
        	cdr.Mode = cdr.Param[0];
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlGetmode:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlGetlocL:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlGetlocP:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
			AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlGetTN:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlGetTD:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlSeekL:
//			((u32 *)cdr.SetSectorSeek)[0] = ((u32 *)cdr.SetSector)[0];
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlSeekP:
//        	((u32 *)cdr.SetSectorSeek)[0] = ((u32 *)cdr.SetSector)[0];
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlTest:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlID:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	case CdlReadS:
			cdr.Irq = 0;
			StopReading();
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
			StartReading(2);
        	break;

    	case CdlReadToc:
			cdr.Ctrl|= 0x80;
    		cdr.Stat = NoIntr; 
    		AddIrqQueue(cdr.Cmd, 0x800);
        	break;

    	default:
#ifdef CDR_LOG
			CDR_LOG("cdrWrite1() Log: Unknown command: %x\n", cdr.Cmd);
#endif
			return;
    }
	if (cdr.Stat != NoIntr) {
		psxHu32ref(0x1070)|= SWAP32((u32)0x4);
		psxRegs.interrupt|= 0x80000000;
	}
}