1 /***************************************************************************
2 * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
18 ***************************************************************************/
21 * Handles all CD-ROM registers and functions.
29 #include "psxevents.h"
30 #include "arm_features.h"
34 #define CDR_LOG SysPrintf
39 #define CDR_LOG_I SysPrintf
41 #define CDR_LOG_I(fmt, ...) \
42 log_unhandled("%u cdrom: " fmt, psxRegs.cycle, ##__VA_ARGS__)
45 #define CDR_LOG_IO SysPrintf
47 #define CDR_LOG_IO(...)
49 //#define CDR_LOG_CMD_IRQ
52 // unused members maintain savesate compatibility
53 unsigned char unused0;
54 unsigned char unused1;
55 unsigned char IrqMask;
56 unsigned char unused2;
58 unsigned char IrqStat;
62 unsigned char Transfer[DATA_SIZE];
66 unsigned char Relative[3];
67 unsigned char Absolute[3];
69 unsigned char TrackChanged;
70 unsigned char ReportDelay;
71 unsigned char PhysCdPropagations;
72 unsigned short sectorsRead;
73 unsigned int freeze_ver;
75 unsigned char Prev[4];
76 unsigned char Param[8];
77 unsigned char Result[16];
81 unsigned char ResultC;
82 unsigned char ResultP;
83 unsigned char ResultReady;
85 unsigned char SubqForwardSectors;
86 unsigned char SetlocPending;
89 unsigned char ResultTN[6];
90 unsigned char ResultTD[4];
91 unsigned char SetSectorPlay[4];
92 unsigned char SetSectorEnd[4];
93 unsigned char SetSector[4];
98 unsigned char FileChannelSelected;
99 unsigned char CurFile, CurChannel;
100 int FilterFile, FilterChannel;
101 unsigned char LocL[8];
112 u32 LastReadSeekCycles;
116 u8 DriveState; // enum drive_state
121 u8 AttenuatorLeftToLeft, AttenuatorLeftToRight;
122 u8 AttenuatorRightToRight, AttenuatorRightToLeft;
123 u8 AttenuatorLeftToLeftT, AttenuatorLeftToRightT;
124 u8 AttenuatorRightToRightT, AttenuatorRightToLeftT;
126 static s16 read_buf[CD_FRAMESIZE_RAW/2];
128 /* CD-ROM magic numbers */
129 #define CdlSync 0 /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
134 #define CdlBackward 5
142 #define CdlSetfilter 13
143 #define CdlSetmode 14
144 #define CdlGetparam 15
145 #define CdlGetlocL 16
146 #define CdlGetlocP 17
152 #define CdlSetclock 23
153 #define CdlGetclock 24
159 #define CdlReadToc 30
161 #ifdef CDR_LOG_CMD_IRQ
162 static const char * const CmdName[0x100] = {
163 "CdlSync", "CdlNop", "CdlSetloc", "CdlPlay",
164 "CdlForward", "CdlBackward", "CdlReadN", "CdlStandby",
165 "CdlStop", "CdlPause", "CdlReset", "CdlMute",
166 "CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetparam",
167 "CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
168 "CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
169 "CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
170 "CdlInit", NULL, "CDlReadToc", NULL
174 unsigned char Test04[] = { 0 };
175 unsigned char Test05[] = { 0 };
176 unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
177 unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
178 unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
184 #define Acknowledge 3
189 #define MODE_SPEED (1<<7) // 0x80
190 #define MODE_STRSND (1<<6) // 0x40 ADPCM on/off
191 #define MODE_SIZE_2340 (1<<5) // 0x20
192 #define MODE_SIZE_2328 (1<<4) // 0x10
193 #define MODE_SIZE_2048 (0<<4) // 0x00
194 #define MODE_SF (1<<3) // 0x08 channel on/off
195 #define MODE_REPORT (1<<2) // 0x04
196 #define MODE_AUTOPAUSE (1<<1) // 0x02
197 #define MODE_CDDA (1<<0) // 0x01
200 #define STATUS_PLAY (1<<7) // 0x80
201 #define STATUS_SEEK (1<<6) // 0x40
202 #define STATUS_READ (1<<5) // 0x20
203 #define STATUS_SHELLOPEN (1<<4) // 0x10
204 #define STATUS_UNKNOWN3 (1<<3) // 0x08
205 #define STATUS_SEEKERROR (1<<2) // 0x04
206 #define STATUS_ROTATING (1<<1) // 0x02
207 #define STATUS_ERROR (1<<0) // 0x01
210 #define ERROR_NOTREADY (1<<7) // 0x80
211 #define ERROR_INVALIDCMD (1<<6) // 0x40
212 #define ERROR_BAD_ARGNUM (1<<5) // 0x20
213 #define ERROR_BAD_ARGVAL (1<<4) // 0x10
214 #define ERROR_SHELLOPEN (1<<3) // 0x08
216 // 1x = 75 sectors per second
217 // PSXCLK = 1 sec in the ps
218 // so (PSXCLK / 75) = cdr read time (linuzappz)
219 #define cdReadTime (PSXCLK / 75)
221 #define LOCL_INVALID 0xff
222 #define SUBQ_FORWARD_SECTORS 2u
225 DRIVESTATE_STANDBY = 0, // different from paused
227 DRIVESTATE_RESCAN_CD,
228 DRIVESTATE_PREPARE_CD,
231 DRIVESTATE_PLAY_READ,
235 static struct CdrStat stat;
237 static unsigned int msf2sec(const u8 *msf) {
238 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
241 // for that weird psemu API..
242 static unsigned int fsm2sec(const u8 *msf) {
243 return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
246 static void sec2msf(unsigned int s, u8 *msf) {
247 msf[0] = s / 75 / 60;
248 s = s - msf[0] * 75 * 60;
254 // cdrPlayReadInterrupt
255 #define CDRPLAYREAD_INT(eCycle, isFirst) { \
257 psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
259 psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
261 psxRegs.intCycle[PSXINT_CDREAD].sCycle += psxRegs.intCycle[PSXINT_CDREAD].cycle; \
262 psxRegs.intCycle[PSXINT_CDREAD].cycle = e_; \
263 set_event_raw_abs(PSXINT_CDREAD, psxRegs.intCycle[PSXINT_CDREAD].sCycle + e_); \
266 #define StopReading() { \
268 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
271 #define StopCdda() { \
272 if (cdr.Play && !Config.Cdda) CDR_stop(); \
274 cdr.FastForward = 0; \
275 cdr.FastBackward = 0; \
278 #define SetPlaySeekRead(x, f) { \
279 x &= ~(STATUS_PLAY | STATUS_SEEK | STATUS_READ); \
283 #define SetResultSize_(size) { \
285 cdr.ResultC = size; \
286 cdr.ResultReady = 1; \
289 #define SetResultSize(size) { \
290 if (cdr.ResultP < cdr.ResultC) \
291 CDR_LOG_I("overwriting result, len=%u\n", cdr.ResultC); \
292 SetResultSize_(size); \
295 static void setIrq(u8 irq, int log_cmd)
297 u8 old = cdr.IrqStat & cdr.IrqMask ? 1 : 0;
298 u8 new_ = irq & cdr.IrqMask ? 1 : 0;
301 if ((old ^ new_) & new_)
302 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
304 #ifdef CDR_LOG_CMD_IRQ
308 CDR_LOG_I("CDR IRQ=%d cmd %02x irqstat %02x: ",
309 !!(cdr.IrqStat & cdr.IrqMask), log_cmd, cdr.IrqStat);
310 for (i = 0; i < cdr.ResultC; i++)
311 SysPrintf("%02x ", cdr.Result[i]);
317 // timing used in this function was taken from tests on real hardware
318 // (yes it's slow, but you probably don't want to modify it)
319 void cdrLidSeekInterrupt(void)
321 CDR_LOG_I("%s cdr.DriveState=%d\n", __func__, cdr.DriveState);
323 switch (cdr.DriveState) {
325 case DRIVESTATE_STANDBY:
328 SetPlaySeekRead(cdr.StatP, 0);
330 if (CDR_getStatus(&stat) == -1)
333 if (stat.Status & STATUS_SHELLOPEN)
335 memset(cdr.Prev, 0xff, sizeof(cdr.Prev));
336 cdr.DriveState = DRIVESTATE_LID_OPEN;
337 set_event(PSXINT_CDRLID, 0x800);
341 case DRIVESTATE_LID_OPEN:
342 if (CDR_getStatus(&stat) == -1)
343 stat.Status &= ~STATUS_SHELLOPEN;
346 if (!(cdr.StatP & STATUS_SHELLOPEN)) {
348 SetPlaySeekRead(cdr.StatP, 0);
349 cdr.StatP |= STATUS_SHELLOPEN;
351 // IIRC this sometimes doesn't happen on real hw
352 // (when lots of commands are sent?)
354 cdr.Result[0] = cdr.StatP | STATUS_SEEKERROR;
355 cdr.Result[1] = ERROR_SHELLOPEN;
356 if (cdr.CmdInProgress) {
357 psxRegs.interrupt &= ~(1 << PSXINT_CDR);
358 cdr.CmdInProgress = 0;
359 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
360 cdr.Result[1] = ERROR_NOTREADY;
362 setIrq(DiskError, 0x1006);
364 set_event(PSXINT_CDRLID, cdReadTime * 30);
367 else if (cdr.StatP & STATUS_ROTATING) {
368 cdr.StatP &= ~STATUS_ROTATING;
370 else if (!(stat.Status & STATUS_SHELLOPEN)) {
374 // cdr.StatP STATUS_SHELLOPEN is "sticky"
375 // and is only cleared by CdlNop
377 cdr.DriveState = DRIVESTATE_RESCAN_CD;
378 set_event(PSXINT_CDRLID, cdReadTime * 105);
383 set_event(PSXINT_CDRLID, cdReadTime * 3);
386 case DRIVESTATE_RESCAN_CD:
387 cdr.StatP |= STATUS_ROTATING;
388 cdr.DriveState = DRIVESTATE_PREPARE_CD;
390 // this is very long on real hardware, over 6 seconds
391 // make it a bit faster here...
392 set_event(PSXINT_CDRLID, cdReadTime * 150);
395 case DRIVESTATE_PREPARE_CD:
396 if (cdr.StatP & STATUS_SEEK) {
397 SetPlaySeekRead(cdr.StatP, 0);
398 cdr.DriveState = DRIVESTATE_STANDBY;
401 SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
402 set_event(PSXINT_CDRLID, cdReadTime * 26);
408 static void Find_CurTrack(const u8 *time)
412 current = msf2sec(time);
414 for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
415 CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
416 sect = fsm2sec(cdr.ResultTD);
417 if (sect - current >= 150)
422 static void generate_subq(const u8 *time)
424 unsigned char start[3], next[3];
425 unsigned int this_s, start_s, next_s, pregap;
428 CDR_getTD(cdr.CurTrack, start);
429 if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
431 CDR_getTD(cdr.CurTrack + 1, next);
434 // last track - cd size
436 next[0] = cdr.SetSectorEnd[2];
437 next[1] = cdr.SetSectorEnd[1];
438 next[2] = cdr.SetSectorEnd[0];
441 this_s = msf2sec(time);
442 start_s = fsm2sec(start);
443 next_s = fsm2sec(next);
445 cdr.TrackChanged = FALSE;
447 if (next_s - this_s < pregap) {
448 cdr.TrackChanged = TRUE;
455 relative_s = this_s - start_s;
456 if (relative_s < 0) {
458 relative_s = -relative_s;
460 sec2msf(relative_s, cdr.subq.Relative);
462 cdr.subq.Track = itob(cdr.CurTrack);
463 cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
464 cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
465 cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
466 cdr.subq.Absolute[0] = itob(time[0]);
467 cdr.subq.Absolute[1] = itob(time[1]);
468 cdr.subq.Absolute[2] = itob(time[2]);
471 static int ReadTrack(const u8 *time)
473 unsigned char tmp[3];
476 tmp[0] = itob(time[0]);
477 tmp[1] = itob(time[1]);
478 tmp[2] = itob(time[2]);
480 CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
482 if (memcmp(cdr.Prev, tmp, 3) == 0)
485 read_ok = CDR_readTrack(tmp);
487 memcpy(cdr.Prev, tmp, 3);
491 static void UpdateSubq(const u8 *time)
493 const struct SubQ *subq;
494 int s = MSF2SECT(time[0], time[1], time[2]);
500 subq = (struct SubQ *)CDR_getBufferSub(s);
501 if (subq != NULL && cdr.CurTrack == 1) {
502 crc = calcCrc((u8 *)subq + 12, 10);
503 if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
504 cdr.subq.Track = subq->TrackNumber;
505 cdr.subq.Index = subq->IndexNumber;
506 memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
507 memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
510 CDR_LOG_I("subq bad crc @%02d:%02d:%02d\n",
511 time[0], time[1], time[2]);
518 CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
519 cdr.subq.Track, cdr.subq.Index,
520 cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
521 cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
524 static void cdrPlayInterrupt_Autopause()
527 boolean abs_lev_chselect;
530 if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
531 CDR_LOG_I("autopause\n");
534 cdr.Result[0] = cdr.StatP;
535 setIrq(DataEnd, 0x1000); // 0x1000 just for logging purposes
538 SetPlaySeekRead(cdr.StatP, 0);
539 cdr.DriveState = DRIVESTATE_PAUSED;
541 else if ((cdr.Mode & MODE_REPORT) && !cdr.ReportDelay &&
542 ((cdr.subq.Absolute[2] & 0x0f) == 0 || cdr.FastForward || cdr.FastBackward))
545 cdr.Result[0] = cdr.StatP;
546 cdr.Result[1] = cdr.subq.Track;
547 cdr.Result[2] = cdr.subq.Index;
549 abs_lev_chselect = cdr.subq.Absolute[1] & 0x01;
551 /* 8 is a hack. For accuracy, it should be 588. */
552 for (i = 0; i < 8; i++)
554 abs_lev_max = MAX_VALUE(abs_lev_max, abs(read_buf[i * 2 + abs_lev_chselect]));
556 abs_lev_max = MIN_VALUE(abs_lev_max, 32767);
557 abs_lev_max |= abs_lev_chselect << 15;
559 if (cdr.subq.Absolute[2] & 0x10) {
560 cdr.Result[3] = cdr.subq.Relative[0];
561 cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
562 cdr.Result[5] = cdr.subq.Relative[2];
565 cdr.Result[3] = cdr.subq.Absolute[0];
566 cdr.Result[4] = cdr.subq.Absolute[1];
567 cdr.Result[5] = cdr.subq.Absolute[2];
569 cdr.Result[6] = abs_lev_max >> 0;
570 cdr.Result[7] = abs_lev_max >> 8;
572 setIrq(DataReady, 0x1001);
579 static int cdrSeekTime(unsigned char *target)
581 int diff = msf2sec(cdr.SetSectorPlay) - msf2sec(target);
582 int seekTime = abs(diff) * (cdReadTime / 2000);
583 int cyclesSinceRS = psxRegs.cycle - cdr.LastReadSeekCycles;
584 seekTime = MAX_VALUE(seekTime, 20000);
586 // Transformers Beast Wars Transmetals does Setloc(x),SeekL,Setloc(x),ReadN
587 // and then wants some slack time
588 if (cdr.DriveState == DRIVESTATE_PAUSED || cyclesSinceRS < cdReadTime *3/2)
589 seekTime += cdReadTime;
591 seekTime = MIN_VALUE(seekTime, PSXCLK * 2 / 3);
592 CDR_LOG("seek: %.2f %.2f (%.2f) st %d di %d\n", (float)seekTime / PSXCLK,
593 (float)seekTime / cdReadTime, (float)cyclesSinceRS / cdReadTime,
594 cdr.DriveState, diff);
598 static u32 cdrAlignTimingHack(u32 cycles)
601 * timing hack for T'ai Fu - Wrath of the Tiger:
602 * The game has a bug where it issues some cdc commands from a low priority
603 * vint handler, however there is a higher priority default bios handler
604 * that acks the vint irq and returns, so game's handler is not reached
605 * (see bios irq handler chains at e004 and the game's irq handling func
606 * at 80036810). For the game to work, vint has to arrive after the bios
607 * vint handler rejects some other irq (of which only cd and rcnt2 are
608 * active), but before the game's handler loop reads I_STAT. The time
609 * window for this is quite small (~1k cycles of so). Apparently this
610 * somehow happens naturally on the real hardware.
612 * Note: always enforcing this breaks other games like Crash PAL version
613 * (inputs get dropped because bios handler doesn't see interrupts).
616 if (psxRegs.cycle - rcnts[3].cycleStart > 250000)
618 vint_rel = rcnts[3].cycleStart + 63000 - psxRegs.cycle;
619 vint_rel += PSXCLK / 60;
620 while ((s32)(vint_rel - cycles) < 0)
621 vint_rel += PSXCLK / 60;
625 static void cdrUpdateTransferBuf(const u8 *buf);
626 static void cdrReadInterrupt(void);
627 static void cdrPrepCdda(s16 *buf, int samples);
629 static void msfiAdd(u8 *msfi, u32 count)
643 static void msfiSub(u8 *msfi, u32 count)
647 if ((s8)msfi[2] < 0) {
650 if ((s8)msfi[1] < 0) {
657 void cdrPlayReadInterrupt(void)
659 int hit = CDR_prefetch(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
660 if (!hit && cdr.PhysCdPropagations++ < 222) {
661 // this propagates real cdrom delays to the emulated game
662 CDRPLAYREAD_INT(cdReadTime / 2, 0);
665 cdr.PhysCdPropagations = 0;
667 cdr.LastReadSeekCycles = psxRegs.cycle;
674 if (!cdr.Play) return;
676 CDR_LOG("CDDA - %02d:%02d:%02d m %02x\n",
677 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], cdr.Mode);
679 cdr.DriveState = DRIVESTATE_PLAY_READ;
680 SetPlaySeekRead(cdr.StatP, STATUS_PLAY);
681 if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
682 CDR_LOG_I("end stop\n");
684 SetPlaySeekRead(cdr.StatP, 0);
685 cdr.TrackChanged = TRUE;
686 cdr.DriveState = DRIVESTATE_PAUSED;
689 CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
692 if (!cdr.IrqStat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
693 cdrPlayInterrupt_Autopause();
695 if (cdr.Play && !Config.Cdda) {
696 cdrPrepCdda(read_buf, CD_FRAMESIZE_RAW / 4);
697 SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW, psxRegs.cycle, 0);
700 msfiAdd(cdr.SetSectorPlay, 1);
701 CDR_prefetch(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
703 // update for CdlGetlocP/autopause
704 generate_subq(cdr.SetSectorPlay);
706 CDRPLAYREAD_INT(cdReadTime, 0);
709 static void softReset(void)
711 CDR_getStatus(&stat);
712 if (stat.Status & STATUS_SHELLOPEN) {
713 cdr.DriveState = DRIVESTATE_LID_OPEN;
714 cdr.StatP = STATUS_SHELLOPEN;
716 else if (CdromId[0] == '\0') {
717 cdr.DriveState = DRIVESTATE_STOPPED;
721 cdr.DriveState = DRIVESTATE_STANDBY;
722 cdr.StatP = STATUS_ROTATING;
725 cdr.FifoOffset = DATA_SIZE; // fifo empty
726 cdr.LocL[0] = LOCL_INVALID;
727 cdr.Mode = MODE_SIZE_2340;
729 SPU_setCDvol(cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
730 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight, psxRegs.cycle);
733 #define CMD_PART2 0x100
734 #define CMD_WHILE_NOT_READY 0x200
736 void cdrInterrupt(void) {
737 int start_rotating = 0;
739 u32 cycles, seekTime = 0;
740 u32 second_resp_time = 0;
746 u8 IrqStat = Acknowledge;
752 CDR_LOG_I("cmd %02x with irqstat %x\n",
753 cdr.CmdInProgress, cdr.IrqStat);
756 if (cdr.Irq1Pending) {
757 // hand out the "newest" sector, according to nocash
758 cdrUpdateTransferBuf(CDR_getBuffer());
759 CDR_LOG_I("%x:%02x:%02x loaded on ack, cmd=%02x res=%02x\n",
760 cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2],
761 cdr.CmdInProgress, cdr.Irq1Pending);
763 cdr.Result[0] = cdr.Irq1Pending;
765 setIrq((cdr.Irq1Pending & STATUS_ERROR) ? DiskError : DataReady, 0x1003);
771 cdr.Result[0] = cdr.StatP;
773 Cmd = cdr.CmdInProgress;
774 cdr.CmdInProgress = 0;
783 switch (cdr.DriveState) {
784 case DRIVESTATE_PREPARE_CD:
786 // Syphon filter 2 expects commands to work shortly after it sees
787 // STATUS_ROTATING, so give up trying to emulate the startup seq
788 cdr.DriveState = DRIVESTATE_STANDBY;
789 cdr.StatP &= ~STATUS_SEEK;
790 psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
794 case DRIVESTATE_LID_OPEN:
795 case DRIVESTATE_RESCAN_CD:
796 // no disk or busy with the initial scan, allowed cmds are limited
797 not_ready = CMD_WHILE_NOT_READY;
801 switch (Cmd | not_ready) {
803 case CdlNop + CMD_WHILE_NOT_READY:
804 if (cdr.DriveState != DRIVESTATE_LID_OPEN)
805 cdr.StatP &= ~STATUS_SHELLOPEN;
809 // case CdlSetloc + CMD_WHILE_NOT_READY: // or is it?
810 CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
812 // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
813 if (((cdr.Param[0] & 0x0F) > 0x09) || (cdr.Param[0] > 0x99) || ((cdr.Param[1] & 0x0F) > 0x09) || (cdr.Param[1] >= 0x60) || ((cdr.Param[2] & 0x0F) > 0x09) || (cdr.Param[2] >= 0x75))
815 CDR_LOG_I("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
816 if (++cdr.errorRetryhack > 100)
818 error = ERROR_BAD_ARGNUM;
823 for (i = 0; i < 3; i++)
824 set_loc[i] = btoi(cdr.Param[i]);
825 memcpy(cdr.SetSector, set_loc, 3);
826 cdr.SetSector[3] = 0;
827 cdr.SetlocPending = 1;
828 cdr.errorRetryhack = 0;
837 cdr.FastBackward = 0;
841 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
843 if (ParamC != 0 && cdr.Param[0] != 0) {
844 int track = btoi( cdr.Param[0] );
846 if (track <= cdr.ResultTN[1])
847 cdr.CurTrack = track;
849 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
851 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
852 for (i = 0; i < 3; i++)
853 set_loc[i] = cdr.ResultTD[2 - i];
854 seekTime = cdrSeekTime(set_loc);
855 memcpy(cdr.SetSectorPlay, set_loc, 3);
858 else if (cdr.SetlocPending) {
859 seekTime = cdrSeekTime(cdr.SetSector);
860 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
863 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
864 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
866 cdr.SetlocPending = 0;
869 Rayman: detect track changes
872 Twisted Metal 2: skip PREGAP + starting accurate SubQ
873 - plays tracks without retry play
875 Wild 9: skip PREGAP + starting accurate SubQ
876 - plays tracks without retry play
878 Find_CurTrack(cdr.SetSectorPlay);
879 generate_subq(cdr.SetSectorPlay);
880 cdr.LocL[0] = LOCL_INVALID;
881 cdr.SubqForwardSectors = 1;
882 cdr.TrackChanged = FALSE;
883 cdr.FileChannelSelected = 0;
885 cdr.ReportDelay = 60;
889 CDR_play(cdr.SetSectorPlay);
891 SetPlaySeekRead(cdr.StatP, STATUS_SEEK | STATUS_ROTATING);
893 // BIOS player - set flag again
895 cdr.DriveState = DRIVESTATE_PLAY_READ;
897 CDRPLAYREAD_INT(cdReadTime + seekTime, 1);
902 // TODO: error 80 if stopped
905 // GameShark CD Player: Calls 2x + Play 2x
907 cdr.FastBackward = 0;
913 // GameShark CD Player: Calls 2x + Play 2x
914 cdr.FastBackward = 1;
919 if (cdr.DriveState != DRIVESTATE_STOPPED) {
920 error = ERROR_BAD_ARGNUM;
923 cdr.DriveState = DRIVESTATE_STANDBY;
924 second_resp_time = cdReadTime * 125 / 2;
928 case CdlStandby + CMD_PART2:
934 // grab time for current track
935 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
937 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
938 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
939 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
944 SetPlaySeekRead(cdr.StatP, 0);
945 cdr.StatP &= ~STATUS_ROTATING;
946 cdr.LocL[0] = LOCL_INVALID;
948 second_resp_time = 0x800;
949 if (cdr.DriveState != DRIVESTATE_STOPPED)
950 second_resp_time = cdReadTime * 30 / 2;
952 cdr.DriveState = DRIVESTATE_STOPPED;
955 case CdlStop + CMD_PART2:
960 if (cdr.AdpcmActive) {
963 SPU_playADPCMchannel(&cdr.Xa, psxRegs.cycle, 1); // flush adpcm
968 // how the drive maintains the position while paused is quite
969 // complicated, this is the minimum to make "Bedlam" happy
970 msfiSub(cdr.SetSectorPlay, MIN_VALUE(cdr.sectorsRead, 4));
974 Gundam Battle Assault 2: much slower (*)
975 - Fixes boot, gameplay
977 Hokuto no Ken 2: slower
978 - Fixes intro + subtitles
980 InuYasha - Feudal Fairy Tale: slower
983 /* Gameblabla - Tightening the timings (as taken from Duckstation).
984 * The timings from Duckstation are based upon hardware tests.
985 * Mednafen's timing don't work for Gundam Battle Assault 2 in PAL/50hz mode,
986 * seems to be timing sensitive as it can depend on the CPU's clock speed.
988 if (!(cdr.StatP & (STATUS_PLAY | STATUS_READ)))
990 second_resp_time = 7000;
994 second_resp_time = (((cdr.Mode & MODE_SPEED) ? 1 : 2) * 1097107);
996 SetPlaySeekRead(cdr.StatP, 0);
997 DriveStateOld = cdr.DriveState;
998 cdr.DriveState = DRIVESTATE_PAUSED;
999 if (DriveStateOld == DRIVESTATE_SEEK) {
1000 // According to Duckstation this fails, but the
1001 // exact conditions and effects are not clear.
1002 // Moto Racer World Tour seems to rely on this.
1003 // For now assume pause works anyway, just errors out.
1004 error = ERROR_NOTREADY;
1009 case CdlPause + CMD_PART2:
1014 case CdlReset + CMD_WHILE_NOT_READY:
1015 // note: nocash and Duckstation calls this 'Init', but
1016 // the official SDK calls it 'Reset', and so do we
1020 second_resp_time = not_ready ? 70000 : 4100000;
1024 case CdlReset + CMD_PART2:
1025 case CdlReset + CMD_PART2 + CMD_WHILE_NOT_READY:
1031 SPU_setCDvol(0, 0, 0, 0, psxRegs.cycle);
1036 SPU_setCDvol(cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1037 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight, psxRegs.cycle);
1041 cdr.FilterFile = cdr.Param[0];
1042 cdr.FilterChannel = cdr.Param[1];
1043 cdr.FileChannelSelected = 0;
1047 case CdlSetmode + CMD_WHILE_NOT_READY:
1048 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1049 cdr.Mode = cdr.Param[0];
1053 case CdlGetparam + CMD_WHILE_NOT_READY:
1054 /* Gameblabla : According to mednafen, Result size should be 5 and done this way. */
1056 cdr.Result[1] = cdr.Mode;
1058 cdr.Result[3] = cdr.FilterFile;
1059 cdr.Result[4] = cdr.FilterChannel;
1063 if (cdr.LocL[0] == LOCL_INVALID) {
1068 memcpy(cdr.Result, cdr.LocL, 8);
1073 memcpy(&cdr.Result, &cdr.subq, 8);
1076 case CdlReadT: // SetSession?
1078 second_resp_time = cdReadTime * 290 / 4;
1082 case CdlReadT + CMD_PART2:
1087 if (CDR_getTN(cdr.ResultTN) == -1) {
1091 cdr.Result[1] = itob(cdr.ResultTN[0]);
1092 cdr.Result[2] = itob(cdr.ResultTN[1]);
1096 cdr.Track = btoi(cdr.Param[0]);
1097 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
1098 error = ERROR_BAD_ARGVAL;
1102 cdr.Result[1] = itob(cdr.ResultTD[2]);
1103 cdr.Result[2] = itob(cdr.ResultTD[1]);
1105 //cdr.Result[3] = itob(cdr.ResultTD[0]);
1112 SetPlaySeekRead(cdr.StatP, STATUS_SEEK | STATUS_ROTATING);
1114 seekTime = cdrSeekTime(cdr.SetSector);
1115 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
1116 cdr.DriveState = DRIVESTATE_SEEK;
1117 CDR_prefetch(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1],
1118 cdr.SetSectorPlay[2]);
1120 Crusaders of Might and Magic = 0.5x-4x
1121 - fix cutscene speech start
1123 Eggs of Steel = 2x-?
1127 - fix cutscene speech
1132 second_resp_time = cdReadTime + seekTime;
1136 case CdlSeekL + CMD_PART2:
1137 case CdlSeekP + CMD_PART2:
1138 SetPlaySeekRead(cdr.StatP, 0);
1139 cdr.Result[0] = cdr.StatP;
1142 Find_CurTrack(cdr.SetSectorPlay);
1143 read_ok = ReadTrack(cdr.SetSectorPlay);
1144 if (read_ok && (buf = CDR_getBuffer()))
1145 memcpy(cdr.LocL, buf, 8);
1146 UpdateSubq(cdr.SetSectorPlay);
1147 cdr.DriveState = DRIVESTATE_STANDBY;
1148 cdr.TrackChanged = FALSE;
1149 cdr.LastReadSeekCycles = psxRegs.cycle;
1153 case CdlTest + CMD_WHILE_NOT_READY:
1154 switch (cdr.Param[0]) {
1155 case 0x20: // System Controller ROM Version
1157 memcpy(cdr.Result, Test20, 4);
1161 memcpy(cdr.Result, Test22, 4);
1163 case 0x23: case 0x24:
1165 memcpy(cdr.Result, Test23, 4);
1171 second_resp_time = 20480;
1174 case CdlID + CMD_PART2:
1176 cdr.Result[0] = cdr.StatP;
1181 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
1182 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
1183 cdr.Result[1] = 0xc0;
1187 cdr.Result[1] |= 0x10;
1188 if (CdromId[0] == '\0')
1189 cdr.Result[1] |= 0x80;
1191 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
1192 CDR_LOG_I("CdlID: %02x %02x %02x %02x\n", cdr.Result[0],
1193 cdr.Result[1], cdr.Result[2], cdr.Result[3]);
1195 /* This adds the string "PCSX" in Playstation bios boot screen */
1196 memcpy((char *)&cdr.Result[4], "PCSX", 4);
1201 case CdlInit + CMD_WHILE_NOT_READY:
1204 SetPlaySeekRead(cdr.StatP, 0);
1205 // yes, it really sets STATUS_SHELLOPEN
1206 cdr.StatP |= STATUS_SHELLOPEN;
1207 cdr.DriveState = DRIVESTATE_RESCAN_CD;
1208 set_event(PSXINT_CDRLID, 20480);
1213 case CdlGetQ + CMD_WHILE_NOT_READY:
1217 case CdlReadToc + CMD_WHILE_NOT_READY:
1218 cdr.LocL[0] = LOCL_INVALID;
1219 second_resp_time = cdReadTime * 180 / 4;
1223 case CdlReadToc + CMD_PART2:
1224 case CdlReadToc + CMD_PART2 + CMD_WHILE_NOT_READY:
1230 if (cdr.Reading && !cdr.SetlocPending)
1233 Find_CurTrack(cdr.SetlocPending ? cdr.SetSector : cdr.SetSectorPlay);
1235 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
1236 // Read* acts as play for cdda tracks in cdda mode
1240 if (cdr.SetlocPending) {
1241 seekTime = cdrSeekTime(cdr.SetSector);
1242 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
1243 cdr.SetlocPending = 0;
1246 cdr.FileChannelSelected = 0;
1247 cdr.AdpcmActive = 0;
1249 // Fighting Force 2 - update subq time immediately
1251 UpdateSubq(cdr.SetSectorPlay);
1252 cdr.LocL[0] = LOCL_INVALID;
1253 cdr.SubqForwardSectors = 1;
1254 cdr.sectorsRead = 0;
1255 cdr.DriveState = DRIVESTATE_SEEK;
1256 CDR_prefetch(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1],
1257 cdr.SetSectorPlay[2]);
1259 cycles = (cdr.Mode & MODE_SPEED) ? cdReadTime : cdReadTime * 2;
1261 if (Config.hacks.cdr_read_timing)
1262 cycles = cdrAlignTimingHack(cycles);
1263 CDRPLAYREAD_INT(cycles, 1);
1265 SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
1271 error = ERROR_INVALIDCMD;
1276 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1277 cdr.Result[1] = not_ready ? ERROR_NOTREADY : error;
1278 IrqStat = DiskError;
1279 CDR_LOG_I("cmd %02x error %02x\n", Cmd, cdr.Result[1]);
1283 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1284 cdr.DriveState = DRIVESTATE_STANDBY;
1285 cdr.StatP |= STATUS_ROTATING;
1288 if (second_resp_time) {
1289 cdr.CmdInProgress = Cmd | 0x100;
1290 set_event(PSXINT_CDR, second_resp_time);
1292 else if (cdr.Cmd && cdr.Cmd != (Cmd & 0xff)) {
1293 cdr.CmdInProgress = cdr.Cmd;
1294 CDR_LOG_I("cmd %02x came before %02x finished\n", cdr.Cmd, Cmd);
1297 setIrq(IrqStat, Cmd);
1301 #define ssat32_to_16(v) \
1302 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1304 #define ssat32_to_16(v) do { \
1305 if (v < -32768) v = -32768; \
1306 else if (v > 32767) v = 32767; \
1310 static void cdrPrepCdda(s16 *buf, int samples)
1312 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1314 for (i = 0; i < samples; i++) {
1315 buf[i * 2 + 0] = SWAP16(buf[i * 2 + 0]);
1316 buf[i * 2 + 1] = SWAP16(buf[i * 2 + 1]);
1321 static void cdrReadInterruptSetResult(unsigned char result)
1324 CDR_LOG_I("%d:%02d:%02d irq miss, cmd=%02x irqstat=%02x\n",
1325 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2],
1326 cdr.CmdInProgress, cdr.IrqStat);
1327 cdr.Irq1Pending = result;
1331 cdr.Result[0] = result;
1332 setIrq((result & STATUS_ERROR) ? DiskError : DataReady, 0x1004);
1335 static void cdrUpdateTransferBuf(const u8 *buf)
1339 memcpy(cdr.Transfer, buf, DATA_SIZE);
1340 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1341 CDR_LOG("cdr.Transfer %02x:%02x:%02x\n",
1342 cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1343 if (cdr.FifoOffset < 2048 + 12)
1344 CDR_LOG("FifoOffset(1) %d/%d\n", cdr.FifoOffset, cdr.FifoSize);
1347 static void cdrReadInterrupt(void)
1349 const struct { u8 file, chan, mode, coding; } *subhdr;
1350 const u8 *buf = NULL;
1351 int deliver_data = 1;
1356 memcpy(subqPos, cdr.SetSectorPlay, sizeof(subqPos));
1357 msfiAdd(subqPos, cdr.SubqForwardSectors);
1358 UpdateSubq(subqPos);
1359 if (cdr.SubqForwardSectors < SUBQ_FORWARD_SECTORS) {
1360 cdr.SubqForwardSectors++;
1361 CDRPLAYREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime, 0);
1365 // note: CdlGetlocL should work as soon as STATUS_READ is indicated
1366 SetPlaySeekRead(cdr.StatP, STATUS_READ | STATUS_ROTATING);
1367 cdr.DriveState = DRIVESTATE_PLAY_READ;
1370 read_ok = ReadTrack(cdr.SetSectorPlay);
1372 buf = CDR_getBuffer();
1377 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1378 cdrReadInterruptSetResult(cdr.StatP | STATUS_ERROR);
1379 cdr.DriveState = DRIVESTATE_PAUSED; // ?
1382 memcpy(cdr.LocL, buf, 8);
1384 if (!cdr.IrqStat && !cdr.Irq1Pending)
1385 cdrUpdateTransferBuf(buf);
1387 subhdr = (void *)(buf + 4);
1389 // try to process as adpcm
1390 if (!(cdr.Mode & MODE_STRSND))
1392 if (buf[3] != 2 || (subhdr->mode & 0x44) != 0x44) // or 0x64?
1394 CDR_LOG("f=%d m=%d %d,%3d | %d,%2d | %d,%2d\n", !!(cdr.Mode & MODE_SF), cdr.Muted,
1395 subhdr->file, subhdr->chan, cdr.CurFile, cdr.CurChannel, cdr.FilterFile, cdr.FilterChannel);
1396 if ((cdr.Mode & MODE_SF) && (subhdr->file != cdr.FilterFile || subhdr->chan != cdr.FilterChannel))
1398 if (subhdr->chan & 0x80) { // ?
1399 if (subhdr->chan != 0xff)
1400 log_unhandled("adpcm %d:%d\n", subhdr->file, subhdr->chan);
1403 if (!cdr.FileChannelSelected) {
1404 cdr.CurFile = subhdr->file;
1405 cdr.CurChannel = subhdr->chan;
1406 cdr.FileChannelSelected = 1;
1408 else if (subhdr->file != cdr.CurFile || subhdr->chan != cdr.CurChannel)
1411 // accepted as adpcm
1416 is_start = !cdr.AdpcmActive;
1417 cdr.AdpcmActive = !xa_decode_sector(&cdr.Xa, buf + 4, is_start);
1418 if (cdr.AdpcmActive)
1419 SPU_playADPCMchannel(&cdr.Xa, psxRegs.cycle, is_start);
1422 if ((cdr.Mode & MODE_SF) && (subhdr->mode & 0x44) == 0x44) // according to nocash
1426 Croc 2: $40 - only FORM1 (*)
1427 Judge Dredd: $C8 - only FORM1 (*)
1428 Sim Theme Park - no adpcm at all (zero)
1432 cdrReadInterruptSetResult(cdr.StatP);
1434 msfiAdd(cdr.SetSectorPlay, 1);
1435 CDR_prefetch(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
1437 CDRPLAYREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime, 0);
1443 bit 2 - adpcm active
1444 bit 5 - 1 result ready
1446 bit 7 - 1 command being processed
1449 unsigned char cdrRead0(void) {
1451 cdr.Ctrl |= cdr.AdpcmActive << 2;
1452 cdr.Ctrl |= cdr.ResultReady << 5;
1454 cdr.Ctrl |= 0x40; // data fifo not empty
1456 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1459 CDR_LOG_IO("cdr r0.sta: %02x\n", cdr.Ctrl);
1461 return psxHu8(0x1800) = cdr.Ctrl;
1464 void cdrWrite0(unsigned char rt) {
1465 CDR_LOG_IO("cdr w0.x.idx: %02x\n", rt);
1467 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1470 unsigned char cdrRead1(void) {
1471 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1472 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1476 if (cdr.ResultP == cdr.ResultC)
1477 cdr.ResultReady = 0;
1479 CDR_LOG_IO("cdr r1.x.rsp: %02x #%u\n", psxHu8(0x1801), cdr.ResultP - 1);
1481 return psxHu8(0x1801);
1484 void cdrWrite1(unsigned char rt) {
1485 const char *rnames[] = { "0.cmd", "1.smd", "2.smc", "3.arr" }; (void)rnames;
1486 CDR_LOG_IO("cdr w1.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1488 switch (cdr.Ctrl & 3) {
1492 cdr.AttenuatorRightToRightT = rt;
1498 #ifdef CDR_LOG_CMD_IRQ
1499 CDR_LOG_I("CD1 write: %x (%s)", rt, CmdName[rt]);
1502 SysPrintf(" Param[%d] = {", cdr.ParamC);
1503 for (i = 0; i < cdr.ParamC; i++)
1504 SysPrintf(" %x,", cdr.Param[i]);
1507 SysPrintf(" @%08x\n", psxRegs.pc);
1510 cdr.ResultReady = 0;
1513 if (!cdr.CmdInProgress) {
1514 cdr.CmdInProgress = rt;
1515 // should be something like 12k + controller delays
1516 set_event(PSXINT_CDR, 5000);
1519 CDR_LOG_I("cmd while busy: %02x, prev %02x, busy %02x\n",
1520 rt, cdr.Cmd, cdr.CmdInProgress);
1521 if (cdr.CmdInProgress < 0x100) // no pending 2nd response
1522 cdr.CmdInProgress = rt;
1528 unsigned char cdrRead2(void) {
1529 unsigned char ret = cdr.Transfer[0x920];
1531 if (cdr.FifoOffset < cdr.FifoSize)
1532 ret = cdr.Transfer[cdr.FifoOffset++];
1534 CDR_LOG_I("read empty fifo (%d)\n", cdr.FifoSize);
1536 CDR_LOG_IO("cdr r2.x.dat: %02x\n", ret);
1540 void cdrWrite2(unsigned char rt) {
1541 const char *rnames[] = { "0.prm", "1.ien", "2.all", "3.arl" }; (void)rnames;
1542 CDR_LOG_IO("cdr w2.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1544 switch (cdr.Ctrl & 3) {
1546 if (cdr.ParamC < 8) // FIXME: size and wrapping
1547 cdr.Param[cdr.ParamC++] = rt;
1551 setIrq(cdr.IrqStat, 0x1005);
1554 cdr.AttenuatorLeftToLeftT = rt;
1557 cdr.AttenuatorRightToLeftT = rt;
1562 unsigned char cdrRead3(void) {
1564 psxHu8(0x1803) = cdr.IrqStat | 0xE0;
1566 psxHu8(0x1803) = cdr.IrqMask | 0xE0;
1568 CDR_LOG_IO("cdr r3.%d.%s: %02x\n", cdr.Ctrl & 3,
1569 (cdr.Ctrl & 1) ? "ifl" : "ien", psxHu8(0x1803));
1570 return psxHu8(0x1803);
1573 void cdrWrite3(unsigned char rt) {
1574 const char *rnames[] = { "0.req", "1.ifl", "2.alr", "3.ava" }; (void)rnames;
1576 CDR_LOG_IO("cdr w3.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1578 switch (cdr.Ctrl & 3) {
1582 if (cdr.IrqStat & rt) {
1583 u32 nextCycle = psxRegs.intCycle[PSXINT_CDR].sCycle
1584 + psxRegs.intCycle[PSXINT_CDR].cycle;
1585 int pending = psxRegs.interrupt & (1 << PSXINT_CDR);
1586 #ifdef CDR_LOG_CMD_IRQ
1587 CDR_LOG_I("ack %02x (w=%02x p=%d,%x,%x,%d)\n",
1588 cdr.IrqStat & rt, rt, !!pending, cdr.CmdInProgress,
1589 cdr.Irq1Pending, nextCycle - psxRegs.cycle);
1591 // note: Croc, Shadow Tower (more) vs Discworld Noir (<993)
1592 if (!pending && (cdr.CmdInProgress || cdr.Irq1Pending))
1595 if (cdr.CmdInProgress) {
1596 c = 2048 - (psxRegs.cycle - nextCycle);
1597 c = MAX_VALUE(c, 512);
1599 set_event(PSXINT_CDR, c);
1608 cdr.AttenuatorLeftToRightT = rt;
1612 log_unhandled("Mute ADPCM?\n");
1614 ll = cdr.AttenuatorLeftToLeftT; lr = cdr.AttenuatorLeftToRightT;
1615 rl = cdr.AttenuatorRightToLeftT; rr = cdr.AttenuatorRightToRightT;
1616 if (ll == cdr.AttenuatorLeftToLeft &&
1617 lr == cdr.AttenuatorLeftToRight &&
1618 rl == cdr.AttenuatorRightToLeft &&
1619 rr == cdr.AttenuatorRightToRight)
1621 cdr.AttenuatorLeftToLeft = ll; cdr.AttenuatorLeftToRight = lr;
1622 cdr.AttenuatorRightToLeft = rl; cdr.AttenuatorRightToRight = rr;
1623 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n", ll, lr, rl, rr);
1624 SPU_setCDvol(ll, lr, rl, rr, psxRegs.cycle);
1630 if ((rt & 0x80) && cdr.FifoOffset < cdr.FifoSize) {
1631 CDR_LOG("cdrom: FifoOffset(2) %d/%d\n", cdr.FifoOffset, cdr.FifoSize);
1633 else if (rt & 0x80) {
1634 switch (cdr.Mode & (MODE_SIZE_2328|MODE_SIZE_2340)) {
1635 case MODE_SIZE_2328:
1637 cdr.FifoOffset = 12;
1638 cdr.FifoSize = 2048 + 12;
1641 case MODE_SIZE_2340:
1644 cdr.FifoSize = 2340;
1648 else if (!(rt & 0xc0))
1649 cdr.FifoOffset = DATA_SIZE; // fifo empty
1652 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1653 u32 cdsize, max_words;
1658 CDR_LOG_I("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x", chcr, madr, bcr);
1659 if (cdr.FifoOffset == 0) {
1661 SysPrintf(" %02x:%02x:%02x", ptr[0], ptr[1], ptr[2]);
1666 switch (chcr & 0x71000000) {
1669 ptr = getDmaRam(madr, &max_words);
1670 if (ptr == INVALID_PTR) {
1671 CDR_LOG_I("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1675 cdsize = (((bcr - 1) & 0xffff) + 1) * 4;
1678 GS CDX: Enhancement CD crash
1681 - Spams DMA3 and gets buffer overrun
1683 size = DATA_SIZE - cdr.FifoOffset;
1686 if (size > max_words * 4)
1687 size = max_words * 4;
1690 memcpy(ptr, cdr.Transfer + cdr.FifoOffset, size);
1691 cdr.FifoOffset += size;
1693 if (size < cdsize) {
1694 CDR_LOG_I("cdrom: dma3 %d/%d\n", size, cdsize);
1695 memset(ptr + size, cdr.Transfer[0x920], cdsize - size);
1697 psxCpu->Clear(madr, cdsize / 4);
1699 set_event(PSXINT_CDRDMA, (cdsize / 4) * 24);
1701 HW_DMA3_CHCR &= SWAPu32(~0x10000000);
1703 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1704 HW_DMA3_BCR &= SWAPu32(0xffff0000);
1708 psxRegs.cycle += (cdsize/4) * 24 - 20;
1713 CDR_LOG_I("psxDma3() Log: Unknown cddma %x\n", chcr);
1717 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1721 void cdrDmaInterrupt(void)
1723 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1725 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1730 static void getCdInfo(void)
1734 CDR_getTN(cdr.ResultTN);
1735 CDR_getTD(0, cdr.SetSectorEnd);
1736 tmp = cdr.SetSectorEnd[0];
1737 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1738 cdr.SetSectorEnd[2] = tmp;
1742 memset(&cdr, 0, sizeof(cdr));
1745 cdr.FilterChannel = 0;
1747 cdr.IrqStat = NoIntr;
1749 // BIOS player - default values
1750 cdr.AttenuatorLeftToLeft = 0x80;
1751 cdr.AttenuatorLeftToRight = 0x00;
1752 cdr.AttenuatorRightToLeft = 0x00;
1753 cdr.AttenuatorRightToRight = 0x80;
1759 int cdrFreeze(void *f, int Mode) {
1763 if (Mode == 0 && !Config.Cdda)
1766 cdr.freeze_ver = 0x63647202;
1767 gzfreeze(&cdr, sizeof(cdr));
1770 cdr.ParamP = cdr.ParamC;
1771 tmp = cdr.FifoOffset;
1774 gzfreeze(&tmp, sizeof(tmp));
1777 u8 ll = 0, lr = 0, rl = 0, rr = 0;
1780 cdr.FifoOffset = tmp < DATA_SIZE ? tmp : DATA_SIZE;
1781 cdr.FifoSize = (cdr.Mode & MODE_SIZE_2340) ? 2340 : 2048 + 12;
1782 if (cdr.SubqForwardSectors > SUBQ_FORWARD_SECTORS)
1783 cdr.SubqForwardSectors = SUBQ_FORWARD_SECTORS;
1785 // read right sub data
1786 tmpp[0] = btoi(cdr.Prev[0]);
1787 tmpp[1] = btoi(cdr.Prev[1]);
1788 tmpp[2] = btoi(cdr.Prev[2]);
1793 if (cdr.freeze_ver < 0x63647202)
1794 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1796 Find_CurTrack(cdr.SetSectorPlay);
1798 CDR_play(cdr.SetSectorPlay);
1801 ll = cdr.AttenuatorLeftToLeft, lr = cdr.AttenuatorLeftToLeft,
1802 rl = cdr.AttenuatorRightToLeft, rr = cdr.AttenuatorRightToRight;
1803 SPU_setCDvol(ll, lr, rl, rr, psxRegs.cycle);
1809 void LidInterrupt(void) {
1811 cdrLidSeekInterrupt();