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 unused3;
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 // need this stupidly long penalty or else Spyro2 intro desyncs
587 // note: if misapplied this breaks MGS cutscenes among other things
588 if (cdr.DriveState == DRIVESTATE_PAUSED && cyclesSinceRS > cdReadTime * 50)
589 seekTime += cdReadTime * 25;
590 // Transformers Beast Wars Transmetals does Setloc(x),SeekL,Setloc(x),ReadN
591 // and then wants some slack time
592 else if (cdr.DriveState == DRIVESTATE_PAUSED || cyclesSinceRS < cdReadTime *3/2)
593 seekTime += cdReadTime;
595 seekTime = MIN_VALUE(seekTime, PSXCLK * 2 / 3);
596 CDR_LOG("seek: %.2f %.2f (%.2f) st %d\n", (float)seekTime / PSXCLK,
597 (float)seekTime / cdReadTime, (float)cyclesSinceRS / cdReadTime,
602 static u32 cdrAlignTimingHack(u32 cycles)
605 * timing hack for T'ai Fu - Wrath of the Tiger:
606 * The game has a bug where it issues some cdc commands from a low priority
607 * vint handler, however there is a higher priority default bios handler
608 * that acks the vint irq and returns, so game's handler is not reached
609 * (see bios irq handler chains at e004 and the game's irq handling func
610 * at 80036810). For the game to work, vint has to arrive after the bios
611 * vint handler rejects some other irq (of which only cd and rcnt2 are
612 * active), but before the game's handler loop reads I_STAT. The time
613 * window for this is quite small (~1k cycles of so). Apparently this
614 * somehow happens naturally on the real hardware.
616 * Note: always enforcing this breaks other games like Crash PAL version
617 * (inputs get dropped because bios handler doesn't see interrupts).
620 if (psxRegs.cycle - rcnts[3].cycleStart > 250000)
622 vint_rel = rcnts[3].cycleStart + 63000 - psxRegs.cycle;
623 vint_rel += PSXCLK / 60;
624 while ((s32)(vint_rel - cycles) < 0)
625 vint_rel += PSXCLK / 60;
629 static void cdrUpdateTransferBuf(const u8 *buf);
630 static void cdrReadInterrupt(void);
631 static void cdrPrepCdda(s16 *buf, int samples);
633 static void msfiAdd(u8 *msfi, u32 count)
647 static void msfiSub(u8 *msfi, u32 count)
651 if ((s8)msfi[2] < 0) {
654 if ((s8)msfi[1] < 0) {
661 void cdrPlayReadInterrupt(void)
663 cdr.LastReadSeekCycles = psxRegs.cycle;
670 if (!cdr.Play) return;
672 CDR_LOG("CDDA - %02d:%02d:%02d m %02x\n",
673 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], cdr.Mode);
675 cdr.DriveState = DRIVESTATE_PLAY_READ;
676 SetPlaySeekRead(cdr.StatP, STATUS_PLAY);
677 if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
678 CDR_LOG_I("end stop\n");
680 SetPlaySeekRead(cdr.StatP, 0);
681 cdr.TrackChanged = TRUE;
682 cdr.DriveState = DRIVESTATE_PAUSED;
685 CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
688 if (!cdr.IrqStat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
689 cdrPlayInterrupt_Autopause();
691 if (cdr.Play && !Config.Cdda) {
692 cdrPrepCdda(read_buf, CD_FRAMESIZE_RAW / 4);
693 SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW, psxRegs.cycle, 0);
696 msfiAdd(cdr.SetSectorPlay, 1);
698 // update for CdlGetlocP/autopause
699 generate_subq(cdr.SetSectorPlay);
701 CDRPLAYREAD_INT(cdReadTime, 0);
704 static void softReset(void)
706 CDR_getStatus(&stat);
707 if (stat.Status & STATUS_SHELLOPEN) {
708 cdr.DriveState = DRIVESTATE_LID_OPEN;
709 cdr.StatP = STATUS_SHELLOPEN;
711 else if (CdromId[0] == '\0') {
712 cdr.DriveState = DRIVESTATE_STOPPED;
716 cdr.DriveState = DRIVESTATE_STANDBY;
717 cdr.StatP = STATUS_ROTATING;
720 cdr.FifoOffset = DATA_SIZE; // fifo empty
721 cdr.LocL[0] = LOCL_INVALID;
722 cdr.Mode = MODE_SIZE_2340;
724 SPU_setCDvol(cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
725 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight, psxRegs.cycle);
728 #define CMD_PART2 0x100
729 #define CMD_WHILE_NOT_READY 0x200
731 void cdrInterrupt(void) {
732 int start_rotating = 0;
734 u32 cycles, seekTime = 0;
735 u32 second_resp_time = 0;
741 u8 IrqStat = Acknowledge;
747 CDR_LOG_I("cmd %02x with irqstat %x\n",
748 cdr.CmdInProgress, cdr.IrqStat);
751 if (cdr.Irq1Pending) {
752 // hand out the "newest" sector, according to nocash
753 cdrUpdateTransferBuf(CDR_getBuffer());
754 CDR_LOG_I("%x:%02x:%02x loaded on ack, cmd=%02x res=%02x\n",
755 cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2],
756 cdr.CmdInProgress, cdr.Irq1Pending);
758 cdr.Result[0] = cdr.Irq1Pending;
760 setIrq((cdr.Irq1Pending & STATUS_ERROR) ? DiskError : DataReady, 0x1003);
766 cdr.Result[0] = cdr.StatP;
768 Cmd = cdr.CmdInProgress;
769 cdr.CmdInProgress = 0;
778 switch (cdr.DriveState) {
779 case DRIVESTATE_PREPARE_CD:
781 // Syphon filter 2 expects commands to work shortly after it sees
782 // STATUS_ROTATING, so give up trying to emulate the startup seq
783 cdr.DriveState = DRIVESTATE_STANDBY;
784 cdr.StatP &= ~STATUS_SEEK;
785 psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
789 case DRIVESTATE_LID_OPEN:
790 case DRIVESTATE_RESCAN_CD:
791 // no disk or busy with the initial scan, allowed cmds are limited
792 not_ready = CMD_WHILE_NOT_READY;
796 switch (Cmd | not_ready) {
798 case CdlNop + CMD_WHILE_NOT_READY:
799 if (cdr.DriveState != DRIVESTATE_LID_OPEN)
800 cdr.StatP &= ~STATUS_SHELLOPEN;
804 // case CdlSetloc + CMD_WHILE_NOT_READY: // or is it?
805 CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
807 // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
808 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))
810 CDR_LOG_I("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
811 if (++cdr.errorRetryhack > 100)
813 error = ERROR_BAD_ARGNUM;
818 for (i = 0; i < 3; i++)
819 set_loc[i] = btoi(cdr.Param[i]);
820 memcpy(cdr.SetSector, set_loc, 3);
821 cdr.SetSector[3] = 0;
822 cdr.SetlocPending = 1;
823 cdr.errorRetryhack = 0;
832 cdr.FastBackward = 0;
836 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
838 if (ParamC != 0 && cdr.Param[0] != 0) {
839 int track = btoi( cdr.Param[0] );
841 if (track <= cdr.ResultTN[1])
842 cdr.CurTrack = track;
844 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
846 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
847 for (i = 0; i < 3; i++)
848 set_loc[i] = cdr.ResultTD[2 - i];
849 seekTime = cdrSeekTime(set_loc);
850 memcpy(cdr.SetSectorPlay, set_loc, 3);
853 else if (cdr.SetlocPending) {
854 seekTime = cdrSeekTime(cdr.SetSector);
855 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
858 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
859 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
861 cdr.SetlocPending = 0;
864 Rayman: detect track changes
867 Twisted Metal 2: skip PREGAP + starting accurate SubQ
868 - plays tracks without retry play
870 Wild 9: skip PREGAP + starting accurate SubQ
871 - plays tracks without retry play
873 Find_CurTrack(cdr.SetSectorPlay);
874 generate_subq(cdr.SetSectorPlay);
875 cdr.LocL[0] = LOCL_INVALID;
876 cdr.SubqForwardSectors = 1;
877 cdr.TrackChanged = FALSE;
878 cdr.FileChannelSelected = 0;
880 cdr.ReportDelay = 60;
884 CDR_play(cdr.SetSectorPlay);
886 SetPlaySeekRead(cdr.StatP, STATUS_SEEK | STATUS_ROTATING);
888 // BIOS player - set flag again
890 cdr.DriveState = DRIVESTATE_PLAY_READ;
892 CDRPLAYREAD_INT(cdReadTime + seekTime, 1);
897 // TODO: error 80 if stopped
900 // GameShark CD Player: Calls 2x + Play 2x
902 cdr.FastBackward = 0;
908 // GameShark CD Player: Calls 2x + Play 2x
909 cdr.FastBackward = 1;
914 if (cdr.DriveState != DRIVESTATE_STOPPED) {
915 error = ERROR_BAD_ARGNUM;
918 cdr.DriveState = DRIVESTATE_STANDBY;
919 second_resp_time = cdReadTime * 125 / 2;
923 case CdlStandby + CMD_PART2:
929 // grab time for current track
930 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
932 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
933 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
934 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
939 SetPlaySeekRead(cdr.StatP, 0);
940 cdr.StatP &= ~STATUS_ROTATING;
941 cdr.LocL[0] = LOCL_INVALID;
943 second_resp_time = 0x800;
944 if (cdr.DriveState != DRIVESTATE_STOPPED)
945 second_resp_time = cdReadTime * 30 / 2;
947 cdr.DriveState = DRIVESTATE_STOPPED;
950 case CdlStop + CMD_PART2:
955 if (cdr.AdpcmActive) {
958 SPU_playADPCMchannel(&cdr.Xa, psxRegs.cycle, 1); // flush adpcm
963 // how the drive maintains the position while paused is quite
964 // complicated, this is the minimum to make "Bedlam" happy
965 msfiSub(cdr.SetSectorPlay, MIN_VALUE(cdr.sectorsRead, 4));
969 Gundam Battle Assault 2: much slower (*)
970 - Fixes boot, gameplay
972 Hokuto no Ken 2: slower
973 - Fixes intro + subtitles
975 InuYasha - Feudal Fairy Tale: slower
978 /* Gameblabla - Tightening the timings (as taken from Duckstation).
979 * The timings from Duckstation are based upon hardware tests.
980 * Mednafen's timing don't work for Gundam Battle Assault 2 in PAL/50hz mode,
981 * seems to be timing sensitive as it can depend on the CPU's clock speed.
983 if (!(cdr.StatP & (STATUS_PLAY | STATUS_READ)))
985 second_resp_time = 7000;
989 second_resp_time = (((cdr.Mode & MODE_SPEED) ? 1 : 2) * 1097107);
991 SetPlaySeekRead(cdr.StatP, 0);
992 DriveStateOld = cdr.DriveState;
993 cdr.DriveState = DRIVESTATE_PAUSED;
994 if (DriveStateOld == DRIVESTATE_SEEK) {
995 // According to Duckstation this fails, but the
996 // exact conditions and effects are not clear.
997 // Moto Racer World Tour seems to rely on this.
998 // For now assume pause works anyway, just errors out.
999 error = ERROR_NOTREADY;
1004 case CdlPause + CMD_PART2:
1009 case CdlReset + CMD_WHILE_NOT_READY:
1010 // note: nocash and Duckstation calls this 'Init', but
1011 // the official SDK calls it 'Reset', and so do we
1015 second_resp_time = not_ready ? 70000 : 4100000;
1019 case CdlReset + CMD_PART2:
1020 case CdlReset + CMD_PART2 + CMD_WHILE_NOT_READY:
1026 SPU_setCDvol(0, 0, 0, 0, psxRegs.cycle);
1031 SPU_setCDvol(cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1032 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight, psxRegs.cycle);
1036 cdr.FilterFile = cdr.Param[0];
1037 cdr.FilterChannel = cdr.Param[1];
1038 cdr.FileChannelSelected = 0;
1042 case CdlSetmode + CMD_WHILE_NOT_READY:
1043 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1044 cdr.Mode = cdr.Param[0];
1048 case CdlGetparam + CMD_WHILE_NOT_READY:
1049 /* Gameblabla : According to mednafen, Result size should be 5 and done this way. */
1051 cdr.Result[1] = cdr.Mode;
1053 cdr.Result[3] = cdr.FilterFile;
1054 cdr.Result[4] = cdr.FilterChannel;
1058 if (cdr.LocL[0] == LOCL_INVALID) {
1063 memcpy(cdr.Result, cdr.LocL, 8);
1068 memcpy(&cdr.Result, &cdr.subq, 8);
1071 case CdlReadT: // SetSession?
1073 second_resp_time = cdReadTime * 290 / 4;
1077 case CdlReadT + CMD_PART2:
1082 if (CDR_getTN(cdr.ResultTN) == -1) {
1086 cdr.Result[1] = itob(cdr.ResultTN[0]);
1087 cdr.Result[2] = itob(cdr.ResultTN[1]);
1091 cdr.Track = btoi(cdr.Param[0]);
1092 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
1093 error = ERROR_BAD_ARGVAL;
1097 cdr.Result[1] = itob(cdr.ResultTD[2]);
1098 cdr.Result[2] = itob(cdr.ResultTD[1]);
1100 //cdr.Result[3] = itob(cdr.ResultTD[0]);
1107 SetPlaySeekRead(cdr.StatP, STATUS_SEEK | STATUS_ROTATING);
1109 seekTime = cdrSeekTime(cdr.SetSector);
1110 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
1111 cdr.DriveState = DRIVESTATE_SEEK;
1113 Crusaders of Might and Magic = 0.5x-4x
1114 - fix cutscene speech start
1116 Eggs of Steel = 2x-?
1120 - fix cutscene speech
1125 second_resp_time = cdReadTime + seekTime;
1129 case CdlSeekL + CMD_PART2:
1130 case CdlSeekP + CMD_PART2:
1131 SetPlaySeekRead(cdr.StatP, 0);
1132 cdr.Result[0] = cdr.StatP;
1135 Find_CurTrack(cdr.SetSectorPlay);
1136 read_ok = ReadTrack(cdr.SetSectorPlay);
1137 if (read_ok && (buf = CDR_getBuffer()))
1138 memcpy(cdr.LocL, buf, 8);
1139 UpdateSubq(cdr.SetSectorPlay);
1140 cdr.DriveState = DRIVESTATE_STANDBY;
1141 cdr.TrackChanged = FALSE;
1142 cdr.LastReadSeekCycles = psxRegs.cycle;
1146 case CdlTest + CMD_WHILE_NOT_READY:
1147 switch (cdr.Param[0]) {
1148 case 0x20: // System Controller ROM Version
1150 memcpy(cdr.Result, Test20, 4);
1154 memcpy(cdr.Result, Test22, 4);
1156 case 0x23: case 0x24:
1158 memcpy(cdr.Result, Test23, 4);
1164 second_resp_time = 20480;
1167 case CdlID + CMD_PART2:
1169 cdr.Result[0] = cdr.StatP;
1174 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
1175 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
1176 cdr.Result[1] = 0xc0;
1180 cdr.Result[1] |= 0x10;
1181 if (CdromId[0] == '\0')
1182 cdr.Result[1] |= 0x80;
1184 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
1185 CDR_LOG_I("CdlID: %02x %02x %02x %02x\n", cdr.Result[0],
1186 cdr.Result[1], cdr.Result[2], cdr.Result[3]);
1188 /* This adds the string "PCSX" in Playstation bios boot screen */
1189 memcpy((char *)&cdr.Result[4], "PCSX", 4);
1194 case CdlInit + CMD_WHILE_NOT_READY:
1197 SetPlaySeekRead(cdr.StatP, 0);
1198 // yes, it really sets STATUS_SHELLOPEN
1199 cdr.StatP |= STATUS_SHELLOPEN;
1200 cdr.DriveState = DRIVESTATE_RESCAN_CD;
1201 set_event(PSXINT_CDRLID, 20480);
1206 case CdlGetQ + CMD_WHILE_NOT_READY:
1210 case CdlReadToc + CMD_WHILE_NOT_READY:
1211 cdr.LocL[0] = LOCL_INVALID;
1212 second_resp_time = cdReadTime * 180 / 4;
1216 case CdlReadToc + CMD_PART2:
1217 case CdlReadToc + CMD_PART2 + CMD_WHILE_NOT_READY:
1223 if (cdr.Reading && !cdr.SetlocPending)
1226 Find_CurTrack(cdr.SetlocPending ? cdr.SetSector : cdr.SetSectorPlay);
1228 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
1229 // Read* acts as play for cdda tracks in cdda mode
1233 if (cdr.SetlocPending) {
1234 seekTime = cdrSeekTime(cdr.SetSector);
1235 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
1236 cdr.SetlocPending = 0;
1239 cdr.FileChannelSelected = 0;
1240 cdr.AdpcmActive = 0;
1242 // Fighting Force 2 - update subq time immediately
1244 UpdateSubq(cdr.SetSectorPlay);
1245 cdr.LocL[0] = LOCL_INVALID;
1246 cdr.SubqForwardSectors = 1;
1247 cdr.sectorsRead = 0;
1248 cdr.DriveState = DRIVESTATE_SEEK;
1250 cycles = (cdr.Mode & MODE_SPEED) ? cdReadTime : cdReadTime * 2;
1252 if (Config.hacks.cdr_read_timing)
1253 cycles = cdrAlignTimingHack(cycles);
1254 CDRPLAYREAD_INT(cycles, 1);
1256 SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
1262 error = ERROR_INVALIDCMD;
1267 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1268 cdr.Result[1] = not_ready ? ERROR_NOTREADY : error;
1269 IrqStat = DiskError;
1270 CDR_LOG_I("cmd %02x error %02x\n", Cmd, cdr.Result[1]);
1274 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1275 cdr.DriveState = DRIVESTATE_STANDBY;
1276 cdr.StatP |= STATUS_ROTATING;
1279 if (second_resp_time) {
1280 cdr.CmdInProgress = Cmd | 0x100;
1281 set_event(PSXINT_CDR, second_resp_time);
1283 else if (cdr.Cmd && cdr.Cmd != (Cmd & 0xff)) {
1284 cdr.CmdInProgress = cdr.Cmd;
1285 CDR_LOG_I("cmd %02x came before %02x finished\n", cdr.Cmd, Cmd);
1288 setIrq(IrqStat, Cmd);
1292 #define ssat32_to_16(v) \
1293 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1295 #define ssat32_to_16(v) do { \
1296 if (v < -32768) v = -32768; \
1297 else if (v > 32767) v = 32767; \
1301 static void cdrPrepCdda(s16 *buf, int samples)
1303 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1305 for (i = 0; i < samples; i++) {
1306 buf[i * 2 + 0] = SWAP16(buf[i * 2 + 0]);
1307 buf[i * 2 + 1] = SWAP16(buf[i * 2 + 1]);
1312 static void cdrReadInterruptSetResult(unsigned char result)
1315 CDR_LOG_I("%d:%02d:%02d irq miss, cmd=%02x irqstat=%02x\n",
1316 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2],
1317 cdr.CmdInProgress, cdr.IrqStat);
1318 cdr.Irq1Pending = result;
1322 cdr.Result[0] = result;
1323 setIrq((result & STATUS_ERROR) ? DiskError : DataReady, 0x1004);
1326 static void cdrUpdateTransferBuf(const u8 *buf)
1330 memcpy(cdr.Transfer, buf, DATA_SIZE);
1331 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1332 CDR_LOG("cdr.Transfer %02x:%02x:%02x\n",
1333 cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1334 if (cdr.FifoOffset < 2048 + 12)
1335 CDR_LOG("FifoOffset(1) %d/%d\n", cdr.FifoOffset, cdr.FifoSize);
1338 static void cdrReadInterrupt(void)
1340 const struct { u8 file, chan, mode, coding; } *subhdr;
1341 const u8 *buf = NULL;
1342 int deliver_data = 1;
1347 memcpy(subqPos, cdr.SetSectorPlay, sizeof(subqPos));
1348 msfiAdd(subqPos, cdr.SubqForwardSectors);
1349 UpdateSubq(subqPos);
1350 if (cdr.SubqForwardSectors < SUBQ_FORWARD_SECTORS) {
1351 cdr.SubqForwardSectors++;
1352 CDRPLAYREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime, 0);
1356 // note: CdlGetlocL should work as soon as STATUS_READ is indicated
1357 SetPlaySeekRead(cdr.StatP, STATUS_READ | STATUS_ROTATING);
1358 cdr.DriveState = DRIVESTATE_PLAY_READ;
1361 read_ok = ReadTrack(cdr.SetSectorPlay);
1363 buf = CDR_getBuffer();
1368 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1369 cdrReadInterruptSetResult(cdr.StatP | STATUS_ERROR);
1370 cdr.DriveState = DRIVESTATE_PAUSED; // ?
1373 memcpy(cdr.LocL, buf, 8);
1375 if (!cdr.IrqStat && !cdr.Irq1Pending)
1376 cdrUpdateTransferBuf(buf);
1378 subhdr = (void *)(buf + 4);
1380 // try to process as adpcm
1381 if (!(cdr.Mode & MODE_STRSND))
1383 if (buf[3] != 2 || (subhdr->mode & 0x44) != 0x44) // or 0x64?
1385 CDR_LOG("f=%d m=%d %d,%3d | %d,%2d | %d,%2d\n", !!(cdr.Mode & MODE_SF), cdr.Muted,
1386 subhdr->file, subhdr->chan, cdr.CurFile, cdr.CurChannel, cdr.FilterFile, cdr.FilterChannel);
1387 if ((cdr.Mode & MODE_SF) && (subhdr->file != cdr.FilterFile || subhdr->chan != cdr.FilterChannel))
1389 if (subhdr->chan & 0xe0) { // ?
1390 if (subhdr->chan != 0xff)
1391 log_unhandled("adpcm %d:%d\n", subhdr->file, subhdr->chan);
1394 if (!cdr.FileChannelSelected) {
1395 cdr.CurFile = subhdr->file;
1396 cdr.CurChannel = subhdr->chan;
1397 cdr.FileChannelSelected = 1;
1399 else if (subhdr->file != cdr.CurFile || subhdr->chan != cdr.CurChannel)
1402 // accepted as adpcm
1407 is_start = !cdr.AdpcmActive;
1408 cdr.AdpcmActive = !xa_decode_sector(&cdr.Xa, buf + 4, is_start);
1409 if (cdr.AdpcmActive)
1410 SPU_playADPCMchannel(&cdr.Xa, psxRegs.cycle, is_start);
1413 if ((cdr.Mode & MODE_SF) && (subhdr->mode & 0x44) == 0x44) // according to nocash
1417 Croc 2: $40 - only FORM1 (*)
1418 Judge Dredd: $C8 - only FORM1 (*)
1419 Sim Theme Park - no adpcm at all (zero)
1423 cdrReadInterruptSetResult(cdr.StatP);
1425 msfiAdd(cdr.SetSectorPlay, 1);
1427 CDRPLAYREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime, 0);
1433 bit 2 - adpcm active
1434 bit 5 - 1 result ready
1436 bit 7 - 1 command being processed
1439 unsigned char cdrRead0(void) {
1441 cdr.Ctrl |= cdr.AdpcmActive << 2;
1442 cdr.Ctrl |= cdr.ResultReady << 5;
1444 cdr.Ctrl |= 0x40; // data fifo not empty
1446 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1449 CDR_LOG_IO("cdr r0.sta: %02x\n", cdr.Ctrl);
1451 return psxHu8(0x1800) = cdr.Ctrl;
1454 void cdrWrite0(unsigned char rt) {
1455 CDR_LOG_IO("cdr w0.x.idx: %02x\n", rt);
1457 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1460 unsigned char cdrRead1(void) {
1461 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1462 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1466 if (cdr.ResultP == cdr.ResultC)
1467 cdr.ResultReady = 0;
1469 CDR_LOG_IO("cdr r1.x.rsp: %02x #%u\n", psxHu8(0x1801), cdr.ResultP - 1);
1471 return psxHu8(0x1801);
1474 void cdrWrite1(unsigned char rt) {
1475 const char *rnames[] = { "0.cmd", "1.smd", "2.smc", "3.arr" }; (void)rnames;
1476 CDR_LOG_IO("cdr w1.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1478 switch (cdr.Ctrl & 3) {
1482 cdr.AttenuatorRightToRightT = rt;
1488 #ifdef CDR_LOG_CMD_IRQ
1489 CDR_LOG_I("CD1 write: %x (%s)", rt, CmdName[rt]);
1492 SysPrintf(" Param[%d] = {", cdr.ParamC);
1493 for (i = 0; i < cdr.ParamC; i++)
1494 SysPrintf(" %x,", cdr.Param[i]);
1497 SysPrintf(" @%08x\n", psxRegs.pc);
1500 cdr.ResultReady = 0;
1503 if (!cdr.CmdInProgress) {
1504 cdr.CmdInProgress = rt;
1505 // should be something like 12k + controller delays
1506 set_event(PSXINT_CDR, 5000);
1509 CDR_LOG_I("cmd while busy: %02x, prev %02x, busy %02x\n",
1510 rt, cdr.Cmd, cdr.CmdInProgress);
1511 if (cdr.CmdInProgress < 0x100) // no pending 2nd response
1512 cdr.CmdInProgress = rt;
1518 unsigned char cdrRead2(void) {
1519 unsigned char ret = cdr.Transfer[0x920];
1521 if (cdr.FifoOffset < cdr.FifoSize)
1522 ret = cdr.Transfer[cdr.FifoOffset++];
1524 CDR_LOG_I("read empty fifo (%d)\n", cdr.FifoSize);
1526 CDR_LOG_IO("cdr r2.x.dat: %02x\n", ret);
1530 void cdrWrite2(unsigned char rt) {
1531 const char *rnames[] = { "0.prm", "1.ien", "2.all", "3.arl" }; (void)rnames;
1532 CDR_LOG_IO("cdr w2.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1534 switch (cdr.Ctrl & 3) {
1536 if (cdr.ParamC < 8) // FIXME: size and wrapping
1537 cdr.Param[cdr.ParamC++] = rt;
1541 setIrq(cdr.IrqStat, 0x1005);
1544 cdr.AttenuatorLeftToLeftT = rt;
1547 cdr.AttenuatorRightToLeftT = rt;
1552 unsigned char cdrRead3(void) {
1554 psxHu8(0x1803) = cdr.IrqStat | 0xE0;
1556 psxHu8(0x1803) = cdr.IrqMask | 0xE0;
1558 CDR_LOG_IO("cdr r3.%d.%s: %02x\n", cdr.Ctrl & 3,
1559 (cdr.Ctrl & 1) ? "ifl" : "ien", psxHu8(0x1803));
1560 return psxHu8(0x1803);
1563 void cdrWrite3(unsigned char rt) {
1564 const char *rnames[] = { "0.req", "1.ifl", "2.alr", "3.ava" }; (void)rnames;
1566 CDR_LOG_IO("cdr w3.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1568 switch (cdr.Ctrl & 3) {
1572 if (cdr.IrqStat & rt) {
1573 u32 nextCycle = psxRegs.intCycle[PSXINT_CDR].sCycle
1574 + psxRegs.intCycle[PSXINT_CDR].cycle;
1575 int pending = psxRegs.interrupt & (1 << PSXINT_CDR);
1576 #ifdef CDR_LOG_CMD_IRQ
1577 CDR_LOG_I("ack %02x (w=%02x p=%d,%x,%x,%d)\n",
1578 cdr.IrqStat & rt, rt, !!pending, cdr.CmdInProgress,
1579 cdr.Irq1Pending, nextCycle - psxRegs.cycle);
1581 // note: Croc, Shadow Tower (more) vs Discworld Noir (<993)
1582 if (!pending && (cdr.CmdInProgress || cdr.Irq1Pending))
1585 if (cdr.CmdInProgress) {
1586 c = 2048 - (psxRegs.cycle - nextCycle);
1587 c = MAX_VALUE(c, 512);
1589 set_event(PSXINT_CDR, c);
1598 cdr.AttenuatorLeftToRightT = rt;
1602 log_unhandled("Mute ADPCM?\n");
1604 ll = cdr.AttenuatorLeftToLeftT; lr = cdr.AttenuatorLeftToRightT;
1605 rl = cdr.AttenuatorRightToLeftT; rr = cdr.AttenuatorRightToRightT;
1606 if (ll == cdr.AttenuatorLeftToLeft &&
1607 lr == cdr.AttenuatorLeftToRight &&
1608 rl == cdr.AttenuatorRightToLeft &&
1609 rr == cdr.AttenuatorRightToRight)
1611 cdr.AttenuatorLeftToLeft = ll; cdr.AttenuatorLeftToRight = lr;
1612 cdr.AttenuatorRightToLeft = rl; cdr.AttenuatorRightToRight = rr;
1613 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n", ll, lr, rl, rr);
1614 SPU_setCDvol(ll, lr, rl, rr, psxRegs.cycle);
1620 if ((rt & 0x80) && cdr.FifoOffset < cdr.FifoSize) {
1621 CDR_LOG("cdrom: FifoOffset(2) %d/%d\n", cdr.FifoOffset, cdr.FifoSize);
1623 else if (rt & 0x80) {
1624 switch (cdr.Mode & (MODE_SIZE_2328|MODE_SIZE_2340)) {
1625 case MODE_SIZE_2328:
1627 cdr.FifoOffset = 12;
1628 cdr.FifoSize = 2048 + 12;
1631 case MODE_SIZE_2340:
1634 cdr.FifoSize = 2340;
1638 else if (!(rt & 0xc0))
1639 cdr.FifoOffset = DATA_SIZE; // fifo empty
1642 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1643 u32 cdsize, max_words;
1648 CDR_LOG_I("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x", chcr, madr, bcr);
1649 if (cdr.FifoOffset == 0) {
1651 SysPrintf(" %02x:%02x:%02x", ptr[0], ptr[1], ptr[2]);
1656 switch (chcr & 0x71000000) {
1659 ptr = getDmaRam(madr, &max_words);
1660 if (ptr == INVALID_PTR) {
1661 CDR_LOG_I("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1665 cdsize = (((bcr - 1) & 0xffff) + 1) * 4;
1668 GS CDX: Enhancement CD crash
1671 - Spams DMA3 and gets buffer overrun
1673 size = DATA_SIZE - cdr.FifoOffset;
1676 if (size > max_words * 4)
1677 size = max_words * 4;
1680 memcpy(ptr, cdr.Transfer + cdr.FifoOffset, size);
1681 cdr.FifoOffset += size;
1683 if (size < cdsize) {
1684 CDR_LOG_I("cdrom: dma3 %d/%d\n", size, cdsize);
1685 memset(ptr + size, cdr.Transfer[0x920], cdsize - size);
1687 psxCpu->Clear(madr, cdsize / 4);
1689 set_event(PSXINT_CDRDMA, (cdsize / 4) * 24);
1691 HW_DMA3_CHCR &= SWAPu32(~0x10000000);
1693 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1694 HW_DMA3_BCR &= SWAPu32(0xffff0000);
1698 psxRegs.cycle += (cdsize/4) * 24 - 20;
1703 CDR_LOG_I("psxDma3() Log: Unknown cddma %x\n", chcr);
1707 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1711 void cdrDmaInterrupt(void)
1713 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1715 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1720 static void getCdInfo(void)
1724 CDR_getTN(cdr.ResultTN);
1725 CDR_getTD(0, cdr.SetSectorEnd);
1726 tmp = cdr.SetSectorEnd[0];
1727 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1728 cdr.SetSectorEnd[2] = tmp;
1732 memset(&cdr, 0, sizeof(cdr));
1735 cdr.FilterChannel = 0;
1737 cdr.IrqStat = NoIntr;
1739 // BIOS player - default values
1740 cdr.AttenuatorLeftToLeft = 0x80;
1741 cdr.AttenuatorLeftToRight = 0x00;
1742 cdr.AttenuatorRightToLeft = 0x00;
1743 cdr.AttenuatorRightToRight = 0x80;
1749 int cdrFreeze(void *f, int Mode) {
1753 if (Mode == 0 && !Config.Cdda)
1756 cdr.freeze_ver = 0x63647202;
1757 gzfreeze(&cdr, sizeof(cdr));
1760 cdr.ParamP = cdr.ParamC;
1761 tmp = cdr.FifoOffset;
1764 gzfreeze(&tmp, sizeof(tmp));
1767 u8 ll = 0, lr = 0, rl = 0, rr = 0;
1770 cdr.FifoOffset = tmp < DATA_SIZE ? tmp : DATA_SIZE;
1771 cdr.FifoSize = (cdr.Mode & MODE_SIZE_2340) ? 2340 : 2048 + 12;
1772 if (cdr.SubqForwardSectors > SUBQ_FORWARD_SECTORS)
1773 cdr.SubqForwardSectors = SUBQ_FORWARD_SECTORS;
1775 // read right sub data
1776 tmpp[0] = btoi(cdr.Prev[0]);
1777 tmpp[1] = btoi(cdr.Prev[1]);
1778 tmpp[2] = btoi(cdr.Prev[2]);
1783 if (cdr.freeze_ver < 0x63647202)
1784 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1786 Find_CurTrack(cdr.SetSectorPlay);
1788 CDR_play(cdr.SetSectorPlay);
1791 ll = cdr.AttenuatorLeftToLeft, lr = cdr.AttenuatorLeftToLeft,
1792 rl = cdr.AttenuatorRightToLeft, rr = cdr.AttenuatorRightToRight;
1793 SPU_setCDvol(ll, lr, rl, rr, psxRegs.cycle);
1799 void LidInterrupt(void) {
1801 cdrLidSeekInterrupt();