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.
27 #include "arm_features.h"
31 #define CDR_LOG SysPrintf
36 #define CDR_LOG_I SysPrintf
38 #define CDR_LOG_I(...)
41 #define CDR_LOG_IO SysPrintf
43 #define CDR_LOG_IO(...)
45 //#define CDR_LOG_CMD_IRQ
49 unsigned char Reg1Mode;
51 unsigned char CmdProcess;
57 unsigned char Transfer[DATA_SIZE];
61 unsigned char Relative[3];
62 unsigned char Absolute[3];
64 unsigned char TrackChanged;
65 unsigned char pad1[3];
66 unsigned int freeze_ver;
68 unsigned char Prev[4];
69 unsigned char Param[8];
70 unsigned char Result[16];
74 unsigned char ResultC;
75 unsigned char ResultP;
76 unsigned char ResultReady;
79 unsigned char SetlocPending;
82 unsigned char ResultTN[6];
83 unsigned char ResultTD[4];
84 unsigned char SetSectorPlay[4];
85 unsigned char SetSectorEnd[4];
86 unsigned char SetSector[4];
90 int Mode, File, Channel;
110 u8 AttenuatorLeftToLeft, AttenuatorLeftToRight;
111 u8 AttenuatorRightToRight, AttenuatorRightToLeft;
112 u8 AttenuatorLeftToLeftT, AttenuatorLeftToRightT;
113 u8 AttenuatorRightToRightT, AttenuatorRightToLeftT;
115 static unsigned char *pTransfer;
116 static s16 read_buf[CD_FRAMESIZE_RAW/2];
118 /* CD-ROM magic numbers */
119 #define CdlSync 0 /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
124 #define CdlBackward 5
132 #define CdlSetfilter 13
133 #define CdlSetmode 14
134 #define CdlGetparam 15
135 #define CdlGetlocL 16
136 #define CdlGetlocP 17
142 #define CdlSetclock 23
143 #define CdlGetclock 24
149 #define CdlReadToc 30
151 #ifdef CDR_LOG_CMD_IRQ
152 static const char * const CmdName[0x100] = {
153 "CdlSync", "CdlNop", "CdlSetloc", "CdlPlay",
154 "CdlForward", "CdlBackward", "CdlReadN", "CdlStandby",
155 "CdlStop", "CdlPause", "CdlReset", "CdlMute",
156 "CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetparam",
157 "CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
158 "CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
159 "CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
160 "CdlInit", NULL, "CDlReadToc", NULL
164 unsigned char Test04[] = { 0 };
165 unsigned char Test05[] = { 0 };
166 unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
167 unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
168 unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
174 #define Acknowledge 3
179 #define MODE_SPEED (1<<7) // 0x80
180 #define MODE_STRSND (1<<6) // 0x40 ADPCM on/off
181 #define MODE_SIZE_2340 (1<<5) // 0x20
182 #define MODE_SIZE_2328 (1<<4) // 0x10
183 #define MODE_SIZE_2048 (0<<4) // 0x00
184 #define MODE_SF (1<<3) // 0x08 channel on/off
185 #define MODE_REPORT (1<<2) // 0x04
186 #define MODE_AUTOPAUSE (1<<1) // 0x02
187 #define MODE_CDDA (1<<0) // 0x01
190 #define STATUS_PLAY (1<<7) // 0x80
191 #define STATUS_SEEK (1<<6) // 0x40
192 #define STATUS_READ (1<<5) // 0x20
193 #define STATUS_SHELLOPEN (1<<4) // 0x10
194 #define STATUS_UNKNOWN3 (1<<3) // 0x08
195 #define STATUS_UNKNOWN2 (1<<2) // 0x04
196 #define STATUS_ROTATING (1<<1) // 0x02
197 #define STATUS_ERROR (1<<0) // 0x01
200 #define ERROR_NOTREADY (1<<7) // 0x80
201 #define ERROR_INVALIDCMD (1<<6) // 0x40
202 #define ERROR_INVALIDARG (1<<5) // 0x20
204 // 1x = 75 sectors per second
205 // PSXCLK = 1 sec in the ps
206 // so (PSXCLK / 75) = cdr read time (linuzappz)
207 #define cdReadTime (PSXCLK / 75)
210 DRIVESTATE_STANDBY = 0, // pause, play, read
212 DRIVESTATE_RESCAN_CD,
213 DRIVESTATE_PREPARE_CD,
217 static struct CdrStat stat;
219 static unsigned int msf2sec(const u8 *msf) {
220 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
223 // for that weird psemu API..
224 static unsigned int fsm2sec(const u8 *msf) {
225 return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
228 static void sec2msf(unsigned int s, u8 *msf) {
229 msf[0] = s / 75 / 60;
230 s = s - msf[0] * 75 * 60;
237 #define CDR_INT(eCycle) { \
238 psxRegs.interrupt |= (1 << PSXINT_CDR); \
239 psxRegs.intCycle[PSXINT_CDR].cycle = eCycle; \
240 psxRegs.intCycle[PSXINT_CDR].sCycle = psxRegs.cycle; \
241 new_dyna_set_event(PSXINT_CDR, eCycle); \
244 // cdrPlaySeekReadInterrupt
245 #define CDRPLAYSEEKREAD_INT(eCycle) { \
246 psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
247 psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
248 psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
249 new_dyna_set_event(PSXINT_CDREAD, eCycle); \
252 // cdrLidSeekInterrupt
253 #define CDRLID_INT(eCycle) { \
254 psxRegs.interrupt |= (1 << PSXINT_CDRLID); \
255 psxRegs.intCycle[PSXINT_CDRLID].cycle = eCycle; \
256 psxRegs.intCycle[PSXINT_CDRLID].sCycle = psxRegs.cycle; \
257 new_dyna_set_event(PSXINT_CDRLID, eCycle); \
260 #define StopReading() { \
262 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
265 #define StopCdda() { \
266 if (cdr.Play && !Config.Cdda) CDR_stop(); \
268 cdr.FastForward = 0; \
269 cdr.FastBackward = 0; \
272 #define SetPlaySeekRead(x, f) { \
273 x &= ~(STATUS_PLAY | STATUS_SEEK | STATUS_READ); \
277 #define SetResultSize(size) { \
279 cdr.ResultC = size; \
280 cdr.ResultReady = 1; \
283 static void setIrq(int log_cmd)
285 if (cdr.Stat & cdr.Reg2)
286 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
288 #ifdef CDR_LOG_CMD_IRQ
291 SysPrintf("CDR IRQ=%d cmd %02x stat %02x: ",
292 !!(cdr.Stat & cdr.Reg2), log_cmd, cdr.Stat);
293 for (i = 0; i < cdr.ResultC; i++)
294 SysPrintf("%02x ", cdr.Result[i]);
300 // timing used in this function was taken from tests on real hardware
301 // (yes it's slow, but you probably don't want to modify it)
302 void cdrLidSeekInterrupt(void)
304 switch (cdr.DriveState) {
306 case DRIVESTATE_STANDBY:
309 SetPlaySeekRead(cdr.StatP, 0);
311 if (CDR_getStatus(&stat) == -1)
314 if (stat.Status & STATUS_SHELLOPEN)
316 cdr.DriveState = DRIVESTATE_LID_OPEN;
321 case DRIVESTATE_LID_OPEN:
322 if (CDR_getStatus(&stat) == -1)
323 stat.Status &= ~STATUS_SHELLOPEN;
326 if (!(cdr.StatP & STATUS_SHELLOPEN)) {
327 cdr.StatP |= STATUS_SHELLOPEN;
329 // could generate error irq here, but real hardware
330 // only sometimes does that
331 // (not done when lots of commands are sent?)
333 CDRLID_INT(cdReadTime * 30);
336 else if (cdr.StatP & STATUS_ROTATING) {
337 cdr.StatP &= ~STATUS_ROTATING;
339 else if (!(stat.Status & STATUS_SHELLOPEN)) {
343 // cdr.StatP STATUS_SHELLOPEN is "sticky"
344 // and is only cleared by CdlNop
346 cdr.DriveState = DRIVESTATE_RESCAN_CD;
347 CDRLID_INT(cdReadTime * 105);
352 CDRLID_INT(cdReadTime * 3);
355 case DRIVESTATE_RESCAN_CD:
356 cdr.StatP |= STATUS_ROTATING;
357 cdr.DriveState = DRIVESTATE_PREPARE_CD;
359 // this is very long on real hardware, over 6 seconds
360 // make it a bit faster here...
361 CDRLID_INT(cdReadTime * 150);
364 case DRIVESTATE_PREPARE_CD:
365 cdr.StatP |= STATUS_SEEK;
367 cdr.DriveState = DRIVESTATE_STANDBY;
368 CDRLID_INT(cdReadTime * 26);
373 static void Find_CurTrack(const u8 *time)
377 current = msf2sec(time);
379 for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
380 CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
381 sect = fsm2sec(cdr.ResultTD);
382 if (sect - current >= 150)
387 static void generate_subq(const u8 *time)
389 unsigned char start[3], next[3];
390 unsigned int this_s, start_s, next_s, pregap;
393 CDR_getTD(cdr.CurTrack, start);
394 if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
396 CDR_getTD(cdr.CurTrack + 1, next);
399 // last track - cd size
401 next[0] = cdr.SetSectorEnd[2];
402 next[1] = cdr.SetSectorEnd[1];
403 next[2] = cdr.SetSectorEnd[0];
406 this_s = msf2sec(time);
407 start_s = fsm2sec(start);
408 next_s = fsm2sec(next);
410 cdr.TrackChanged = FALSE;
412 if (next_s - this_s < pregap) {
413 cdr.TrackChanged = TRUE;
420 relative_s = this_s - start_s;
421 if (relative_s < 0) {
423 relative_s = -relative_s;
425 sec2msf(relative_s, cdr.subq.Relative);
427 cdr.subq.Track = itob(cdr.CurTrack);
428 cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
429 cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
430 cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
431 cdr.subq.Absolute[0] = itob(time[0]);
432 cdr.subq.Absolute[1] = itob(time[1]);
433 cdr.subq.Absolute[2] = itob(time[2]);
436 static void ReadTrack(const u8 *time) {
437 unsigned char tmp[3];
441 tmp[0] = itob(time[0]);
442 tmp[1] = itob(time[1]);
443 tmp[2] = itob(time[2]);
445 if (memcmp(cdr.Prev, tmp, 3) == 0)
448 CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
450 cdr.NoErr = CDR_readTrack(tmp);
451 memcpy(cdr.Prev, tmp, 3);
456 subq = (struct SubQ *)CDR_getBufferSub();
457 if (subq != NULL && cdr.CurTrack == 1) {
458 crc = calcCrc((u8 *)subq + 12, 10);
459 if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
460 cdr.subq.Track = subq->TrackNumber;
461 cdr.subq.Index = subq->IndexNumber;
462 memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
463 memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
466 CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
467 tmp[0], tmp[1], tmp[2]);
474 CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
475 cdr.subq.Track, cdr.subq.Index,
476 cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
477 cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
480 static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
482 if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
488 CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
497 static void cdrPlayInterrupt_Autopause()
500 boolean abs_lev_chselect;
503 if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
504 CDR_LOG( "CDDA STOP\n" );
506 // Magic the Gathering
507 // - looping territory cdda
510 //cdr.ResultReady = 1;
511 //cdr.Stat = DataReady;
516 SetPlaySeekRead(cdr.StatP, 0);
518 else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
519 cdr.Result[0] = cdr.StatP;
520 cdr.Result[1] = cdr.subq.Track;
521 cdr.Result[2] = cdr.subq.Index;
523 abs_lev_chselect = cdr.subq.Absolute[1] & 0x01;
525 /* 8 is a hack. For accuracy, it should be 588. */
526 for (i = 0; i < 8; i++)
528 abs_lev_max = MAX_VALUE(abs_lev_max, abs(read_buf[i * 2 + abs_lev_chselect]));
530 abs_lev_max = MIN_VALUE(abs_lev_max, 32767);
531 abs_lev_max |= abs_lev_chselect << 15;
533 if (cdr.subq.Absolute[2] & 0x10) {
534 cdr.Result[3] = cdr.subq.Relative[0];
535 cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
536 cdr.Result[5] = cdr.subq.Relative[2];
539 cdr.Result[3] = cdr.subq.Absolute[0];
540 cdr.Result[4] = cdr.subq.Absolute[1];
541 cdr.Result[5] = cdr.subq.Absolute[2];
544 cdr.Result[6] = abs_lev_max >> 0;
545 cdr.Result[7] = abs_lev_max >> 8;
547 // Rayman: Logo freeze (resultready + dataready)
549 cdr.Stat = DataReady;
556 static int cdrSeekTime(unsigned char *target)
558 int seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(target)) * (cdReadTime / 200);
561 * It was originally set to 1000000 for Driver, however it is not high enough for Worms Pinball
562 * and was unreliable for that game.
563 * I also tested it against Mednafen and Driver's titlescreen music starts 25 frames later, not immediatly.
565 * Obviously, this isn't perfect but right now, it should be a bit better.
566 * Games to test this against if you change that setting :
567 * - Driver (titlescreen music delay and retry mission)
568 * - Worms Pinball (Will either not boot or crash in the memory card screen)
569 * - Viewpoint (short pauses if the delay in the ingame music is too long)
571 * It seems that 3386880 * 5 is too much for Driver's titlescreen and it starts skipping.
572 * However, 1000000 is not enough for Worms Pinball to reliably boot.
574 if(seekTime > 3386880 * 2) seekTime = 3386880 * 2;
575 CDR_LOG("seek: %.2f %.2f\n", (float)seekTime / PSXCLK, (float)seekTime / cdReadTime);
579 static void cdrReadInterrupt(void);
581 void cdrPlaySeekReadInterrupt(void)
588 if (!cdr.Play && (cdr.StatP & STATUS_SEEK)) {
590 CDR_LOG_I("cdrom: seek stat hack\n");
591 CDRPLAYSEEKREAD_INT(0x1000);
595 cdr.StatP |= STATUS_ROTATING;
596 SetPlaySeekRead(cdr.StatP, 0);
597 cdr.Result[0] = cdr.StatP;
603 Find_CurTrack(cdr.SetSectorPlay);
604 ReadTrack(cdr.SetSectorPlay);
605 cdr.TrackChanged = FALSE;
609 if (!cdr.Play) return;
611 CDR_LOG( "CDDA - %d:%d:%d\n",
612 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
614 SetPlaySeekRead(cdr.StatP, STATUS_PLAY);
615 if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
617 SetPlaySeekRead(cdr.StatP, 0);
618 cdr.TrackChanged = TRUE;
621 CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
624 if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
625 cdrPlayInterrupt_Autopause();
627 if (CDR_readCDDA && !cdr.Muted && !Config.Cdda) {
628 cdrAttenuate(read_buf, CD_FRAMESIZE_RAW / 4, 1);
629 if (SPU_playCDDAchannel)
630 SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW);
633 cdr.SetSectorPlay[2]++;
634 if (cdr.SetSectorPlay[2] == 75) {
635 cdr.SetSectorPlay[2] = 0;
636 cdr.SetSectorPlay[1]++;
637 if (cdr.SetSectorPlay[1] == 60) {
638 cdr.SetSectorPlay[1] = 0;
639 cdr.SetSectorPlay[0]++;
643 CDRPLAYSEEKREAD_INT(cdReadTime);
645 // update for CdlGetlocP/autopause
646 generate_subq(cdr.SetSectorPlay);
649 void cdrInterrupt(void) {
651 int no_busy_error = 0;
652 int start_rotating = 0;
655 unsigned int seekTime = 0;
661 CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
670 cdr.Result[0] = cdr.StatP;
671 cdr.Stat = Acknowledge;
673 if (cdr.IrqRepeated) {
675 if (cdr.eCycle > psxRegs.cycle) {
685 if (cdr.DriveState != DRIVESTATE_LID_OPEN)
686 cdr.StatP &= ~STATUS_SHELLOPEN;
691 CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
693 // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
694 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))
696 CDR_LOG("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
697 error = ERROR_INVALIDARG;
702 for (i = 0; i < 3; i++)
703 set_loc[i] = btoi(cdr.Param[i]);
704 memcpy(cdr.SetSector, set_loc, 3);
705 cdr.SetSector[3] = 0;
706 cdr.SetlocPending = 1;
715 cdr.FastBackward = 0;
719 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
721 if (cdr.ParamC != 0 && cdr.Param[0] != 0) {
722 int track = btoi( cdr.Param[0] );
724 if (track <= cdr.ResultTN[1])
725 cdr.CurTrack = track;
727 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
729 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
730 for (i = 0; i < 3; i++)
731 set_loc[i] = cdr.ResultTD[2 - i];
732 seekTime = cdrSeekTime(set_loc);
733 memcpy(cdr.SetSectorPlay, set_loc, 3);
736 else if (cdr.SetlocPending) {
737 seekTime = cdrSeekTime(cdr.SetSector);
738 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
741 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
742 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
744 cdr.SetlocPending = 0;
747 Rayman: detect track changes
750 Twisted Metal 2: skip PREGAP + starting accurate SubQ
751 - plays tracks without retry play
753 Wild 9: skip PREGAP + starting accurate SubQ
754 - plays tracks without retry play
756 Find_CurTrack(cdr.SetSectorPlay);
757 ReadTrack(cdr.SetSectorPlay);
758 cdr.TrackChanged = FALSE;
761 CDR_play(cdr.SetSectorPlay);
763 SetPlaySeekRead(cdr.StatP, STATUS_SEEK | STATUS_ROTATING);
765 // BIOS player - set flag again
768 CDRPLAYSEEKREAD_INT(cdReadTime + seekTime);
773 // TODO: error 80 if stopped
776 // GameShark CD Player: Calls 2x + Play 2x
778 cdr.FastBackward = 0;
784 // GameShark CD Player: Calls 2x + Play 2x
785 cdr.FastBackward = 1;
790 if (cdr.DriveState != DRIVESTATE_STOPPED) {
791 error = ERROR_INVALIDARG;
794 AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
798 case CdlStandby + 0x100:
804 // grab time for current track
805 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
807 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
808 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
809 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
814 SetPlaySeekRead(cdr.StatP, 0);
815 cdr.StatP &= ~STATUS_ROTATING;
818 if (cdr.DriveState == DRIVESTATE_STANDBY)
819 delay = cdReadTime * 30 / 2;
821 cdr.DriveState = DRIVESTATE_STOPPED;
822 AddIrqQueue(CdlStop + 0x100, delay);
825 case CdlStop + 0x100:
833 Gundam Battle Assault 2: much slower (*)
834 - Fixes boot, gameplay
836 Hokuto no Ken 2: slower
837 - Fixes intro + subtitles
839 InuYasha - Feudal Fairy Tale: slower
842 /* Gameblabla - Tightening the timings (as taken from Duckstation).
843 * The timings from Duckstation are based upon hardware tests.
844 * Mednafen's timing don't work for Gundam Battle Assault 2 in PAL/50hz mode,
845 * seems to be timing sensitive as it can depend on the CPU's clock speed.
847 if (!(cdr.StatP & (STATUS_PLAY | STATUS_READ)))
853 delay = (((cdr.Mode & MODE_SPEED) ? 2 : 1) * (1000000));
855 AddIrqQueue(CdlPause + 0x100, delay);
856 SetPlaySeekRead(cdr.StatP, 0);
860 case CdlPause + 0x100:
867 SetPlaySeekRead(cdr.StatP, 0);
869 cdr.Mode = 0x20; /* This fixes This is Football 2, Pooh's Party lockups */
870 AddIrqQueue(CdlReset + 0x100, 4100000);
875 case CdlReset + 0x100:
888 cdr.File = cdr.Param[0];
889 cdr.Channel = cdr.Param[1];
897 /* Gameblabla : According to mednafen, Result size should be 5 and done this way. */
899 cdr.Result[1] = cdr.Mode;
901 cdr.Result[3] = cdr.File;
902 cdr.Result[4] = cdr.Channel;
908 memcpy(cdr.Result, cdr.Transfer, 8);
913 memcpy(&cdr.Result, &cdr.subq, 8);
916 case CdlReadT: // SetSession?
918 AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
922 case CdlReadT + 0x100:
928 if (CDR_getTN(cdr.ResultTN) == -1) {
929 cdr.Stat = DiskError;
930 cdr.Result[0] |= STATUS_ERROR;
932 cdr.Stat = Acknowledge;
933 cdr.Result[1] = itob(cdr.ResultTN[0]);
934 cdr.Result[2] = itob(cdr.ResultTN[1]);
939 cdr.Track = btoi(cdr.Param[0]);
941 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
942 cdr.Stat = DiskError;
943 cdr.Result[0] |= STATUS_ERROR;
945 cdr.Stat = Acknowledge;
946 cdr.Result[0] = cdr.StatP;
947 cdr.Result[1] = itob(cdr.ResultTD[2]);
948 cdr.Result[2] = itob(cdr.ResultTD[1]);
949 /* According to Nocash's documentation, the function doesn't care about ff.
950 * This can be seen also in Mednafen's implementation. */
951 //cdr.Result[3] = itob(cdr.ResultTD[0]);
959 SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
961 seekTime = cdrSeekTime(cdr.SetSector);
962 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
964 Crusaders of Might and Magic = 0.5x-4x
965 - fix cutscene speech start
971 - fix cutscene speech
976 CDRPLAYSEEKREAD_INT(cdReadTime + seekTime);
981 switch (cdr.Param[0]) {
982 case 0x20: // System Controller ROM Version
984 memcpy(cdr.Result, Test20, 4);
988 memcpy(cdr.Result, Test22, 4);
990 case 0x23: case 0x24:
992 memcpy(cdr.Result, Test23, 4);
999 AddIrqQueue(CdlID + 0x100, 20480);
1004 cdr.Result[0] = cdr.StatP;
1009 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
1010 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
1011 cdr.Result[1] = 0xc0;
1015 cdr.Result[1] |= 0x10;
1016 if (CdromId[0] == '\0')
1017 cdr.Result[1] |= 0x80;
1019 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
1021 strncpy((char *)&cdr.Result[4], "PCSX", 4);
1022 cdr.Stat = Complete;
1028 SetPlaySeekRead(cdr.StatP, 0);
1029 // yes, it really sets STATUS_SHELLOPEN
1030 cdr.StatP |= STATUS_SHELLOPEN;
1031 cdr.DriveState = DRIVESTATE_RESCAN_CD;
1042 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
1047 case CdlReadToc + 0x100:
1048 cdr.Stat = Complete;
1054 Find_CurTrack(cdr.SetlocPending ? cdr.SetSector : cdr.SetSectorPlay);
1056 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
1057 // Read* acts as play for cdda tracks in cdda mode
1061 if (cdr.SetlocPending) {
1062 seekTime = cdrSeekTime(cdr.SetSector);
1063 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
1064 cdr.SetlocPending = 0;
1067 cdr.FirstSector = 1;
1069 // Fighting Force 2 - update subq time immediately
1071 ReadTrack(cdr.SetSectorPlay);
1074 // Crusaders of Might and Magic - update getlocl now
1075 // - fixes cutscene speech
1077 u8 *buf = CDR_getBuffer();
1079 memcpy(cdr.Transfer, buf, 8);
1083 Duke Nukem: Land of the Babes - seek then delay read for one frame
1085 C-12 - Final Resistance - doesn't like seek
1089 By nicolasnoble from PCSX Redux :
1090 "It LOOKS like this logic is wrong, therefore disabling it with `&& false` for now.
1091 For "PoPoLoCrois Monogatari II", the game logic will soft lock and will never issue GetLocP to detect
1092 the end of its XA streams, as it seems to assume ReadS will not return a status byte with the SEEK
1093 flag set. I think the reasonning is that since it's invalid to call GetLocP while seeking, the game
1094 tries to protect itself against errors by preventing from issuing a GetLocP while it knows the
1095 last status was "seek". But this makes the logic just softlock as it'll never get a notification
1096 about the fact the drive is done seeking and the read actually started.
1098 In other words, this state machine here is probably wrong in assuming the response to ReadS/ReadN is
1099 done right away. It's rather when it's done seeking, and the read has actually started. This probably
1100 requires a bit more work to make sure seek delays are processed properly.
1101 Checked with a few games, this seems to work fine."
1103 Gameblabla additional notes :
1104 This still needs the "+ seekTime" that PCSX Redux doesn't have for the Driver "retry" mission error.
1106 CDRPLAYSEEKREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime);
1108 SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
1113 CDR_LOG_I("Invalid command: %02x\n", Irq);
1114 error = ERROR_INVALIDCMD;
1119 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1120 cdr.Result[1] = error;
1121 cdr.Stat = DiskError;
1125 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1126 cdr.DriveState = DRIVESTATE_STANDBY;
1127 cdr.StatP |= STATUS_ROTATING;
1130 if (!no_busy_error) {
1131 switch (cdr.DriveState) {
1132 case DRIVESTATE_LID_OPEN:
1133 case DRIVESTATE_RESCAN_CD:
1134 case DRIVESTATE_PREPARE_CD:
1136 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1137 cdr.Result[1] = ERROR_NOTREADY;
1138 cdr.Stat = DiskError;
1149 #define ssat32_to_16(v) \
1150 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1152 #define ssat32_to_16(v) do { \
1153 if (v < -32768) v = -32768; \
1154 else if (v > 32767) v = 32767; \
1158 void cdrAttenuate(s16 *buf, int samples, int stereo)
1161 int ll = cdr.AttenuatorLeftToLeft;
1162 int lr = cdr.AttenuatorLeftToRight;
1163 int rl = cdr.AttenuatorRightToLeft;
1164 int rr = cdr.AttenuatorRightToRight;
1166 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1169 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1173 for (i = 0; i < samples; i++) {
1176 l = (l * ll + r * rl) >> 7;
1177 r = (r * rr + l * lr) >> 7;
1185 for (i = 0; i < samples; i++) {
1187 l = l * (ll + rl) >> 7;
1188 //r = r * (rr + lr) >> 7;
1196 static void cdrReadInterrupt(void)
1200 if (cdr.Irq || cdr.Stat) {
1201 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1202 CDRPLAYSEEKREAD_INT(2048);
1208 SetPlaySeekRead(cdr.StatP, STATUS_READ | STATUS_ROTATING);
1209 cdr.Result[0] = cdr.StatP;
1211 ReadTrack(cdr.SetSectorPlay);
1213 buf = CDR_getBuffer();
1218 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1219 memset(cdr.Transfer, 0, DATA_SIZE);
1220 cdr.Stat = DiskError;
1221 cdr.Result[0] |= STATUS_ERROR;
1226 memcpy(cdr.Transfer, buf, DATA_SIZE);
1227 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1230 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1232 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1233 // Firemen 2: Multi-XA files - briefings, cutscenes
1234 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1235 cdr.File = cdr.Transfer[4 + 0];
1236 cdr.Channel = cdr.Transfer[4 + 1];
1240 * Skips playing on channel 255.
1241 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1242 * TODO : Check if this is the proper behaviour.
1244 if((cdr.Transfer[4 + 2] & 0x4) &&
1245 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1246 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1247 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1249 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1250 SPU_playADPCMchannel(&cdr.Xa);
1251 cdr.FirstSector = 0;
1253 else cdr.FirstSector = -1;
1257 cdr.SetSectorPlay[2]++;
1258 if (cdr.SetSectorPlay[2] == 75) {
1259 cdr.SetSectorPlay[2] = 0;
1260 cdr.SetSectorPlay[1]++;
1261 if (cdr.SetSectorPlay[1] == 60) {
1262 cdr.SetSectorPlay[1] = 0;
1263 cdr.SetSectorPlay[0]++;
1269 CDRPLAYSEEKREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
1272 Croc 2: $40 - only FORM1 (*)
1273 Judge Dredd: $C8 - only FORM1 (*)
1274 Sim Theme Park - no adpcm at all (zero)
1277 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1278 cdr.Stat = DataReady;
1282 // update for CdlGetlocP
1283 ReadTrack(cdr.SetSectorPlay);
1292 bit 5 - 1 result ready
1294 bit 7 - 1 command being processed
1297 unsigned char cdrRead0(void) {
1298 if (cdr.ResultReady)
1306 // cdr.Ctrl &= ~0x40;
1308 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1311 CDR_LOG_IO("cdr r0.sta: %02x\n", cdr.Ctrl);
1313 return psxHu8(0x1800) = cdr.Ctrl;
1316 void cdrWrite0(unsigned char rt) {
1317 CDR_LOG_IO("cdr w0.idx: %02x\n", rt);
1319 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1322 unsigned char cdrRead1(void) {
1323 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1324 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1328 if (cdr.ResultP == cdr.ResultC)
1329 cdr.ResultReady = 0;
1331 CDR_LOG_IO("cdr r1.rsp: %02x #%u\n", psxHu8(0x1801), cdr.ResultP - 1);
1333 return psxHu8(0x1801);
1336 void cdrWrite1(unsigned char rt) {
1337 const char *rnames[] = { "cmd", "smd", "smc", "arr" }; (void)rnames;
1338 CDR_LOG_IO("cdr w1.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1340 switch (cdr.Ctrl & 3) {
1344 cdr.AttenuatorRightToRightT = rt;
1353 #ifdef CDR_LOG_CMD_IRQ
1354 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1357 SysPrintf(" Param[%d] = {", cdr.ParamC);
1358 for (i = 0; i < cdr.ParamC; i++)
1359 SysPrintf(" %x,", cdr.Param[i]);
1366 cdr.ResultReady = 0;
1368 // cdr.Stat = NoIntr;
1369 AddIrqQueue(cdr.Cmd, 0x800);
1373 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1375 cdr.Mode = cdr.Param[0];
1380 unsigned char cdrRead2(void) {
1383 if (cdr.Readed == 0) {
1389 CDR_LOG_IO("cdr r2.dat: %02x\n", ret);
1393 void cdrWrite2(unsigned char rt) {
1394 const char *rnames[] = { "prm", "ien", "all", "arl" }; (void)rnames;
1395 CDR_LOG_IO("cdr w2.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1397 switch (cdr.Ctrl & 3) {
1399 if (cdr.ParamC < 8) // FIXME: size and wrapping
1400 cdr.Param[cdr.ParamC++] = rt;
1407 cdr.AttenuatorLeftToLeftT = rt;
1410 cdr.AttenuatorRightToLeftT = rt;
1415 unsigned char cdrRead3(void) {
1417 psxHu8(0x1803) = cdr.Stat | 0xE0;
1419 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1421 CDR_LOG_IO("cdr r3.%s: %02x\n", (cdr.Ctrl & 1) ? "ifl" : "ien", psxHu8(0x1803));
1422 return psxHu8(0x1803);
1425 void cdrWrite3(unsigned char rt) {
1426 const char *rnames[] = { "req", "ifl", "alr", "ava" }; (void)rnames;
1427 CDR_LOG_IO("cdr w3.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1429 switch (cdr.Ctrl & 3) {
1439 cdr.AttenuatorLeftToRightT = rt;
1443 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1444 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1445 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1446 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1451 if ((rt & 0x80) && cdr.Readed == 0) {
1453 pTransfer = cdr.Transfer;
1455 switch (cdr.Mode & 0x30) {
1456 case MODE_SIZE_2328:
1461 case MODE_SIZE_2340:
1471 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1476 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1481 if (cdr.Readed == 0) {
1482 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1486 cdsize = (bcr & 0xffff) * 4;
1488 // Ape Escape: bcr = 0001 / 0000
1492 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1493 case MODE_SIZE_2340: cdsize = 2340; break;
1494 case MODE_SIZE_2328: cdsize = 2328; break;
1496 case MODE_SIZE_2048: cdsize = 2048; break;
1501 ptr = (u8 *)PSXM(madr);
1503 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1508 GS CDX: Enhancement CD crash
1511 - Spams DMA3 and gets buffer overrun
1513 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1518 memcpy(ptr, pTransfer, size);
1521 psxCpu->Clear(madr, cdsize / 4);
1522 pTransfer += cdsize;
1524 if( chcr == 0x11400100 ) {
1525 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1526 CDRDMA_INT( (cdsize/4) / 4 );
1528 else if( chcr == 0x11000000 ) {
1529 // CDRDMA_INT( (cdsize/4) * 1 );
1531 psxRegs.cycle += (cdsize/4) * 24/2;
1537 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1541 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1545 void cdrDmaInterrupt(void)
1547 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1549 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1554 static void getCdInfo(void)
1558 CDR_getTN(cdr.ResultTN);
1559 CDR_getTD(0, cdr.SetSectorEnd);
1560 tmp = cdr.SetSectorEnd[0];
1561 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1562 cdr.SetSectorEnd[2] = tmp;
1566 memset(&cdr, 0, sizeof(cdr));
1572 cdr.DriveState = DRIVESTATE_STANDBY;
1573 cdr.StatP = STATUS_ROTATING;
1574 pTransfer = cdr.Transfer;
1576 // BIOS player - default values
1577 cdr.AttenuatorLeftToLeft = 0x80;
1578 cdr.AttenuatorLeftToRight = 0x00;
1579 cdr.AttenuatorRightToLeft = 0x00;
1580 cdr.AttenuatorRightToRight = 0x80;
1585 int cdrFreeze(void *f, int Mode) {
1589 if (Mode == 0 && !Config.Cdda)
1592 cdr.freeze_ver = 0x63647202;
1593 gzfreeze(&cdr, sizeof(cdr));
1596 cdr.ParamP = cdr.ParamC;
1597 tmp = pTransfer - cdr.Transfer;
1600 gzfreeze(&tmp, sizeof(tmp));
1605 pTransfer = cdr.Transfer + tmp;
1607 // read right sub data
1608 tmpp[0] = btoi(cdr.Prev[0]);
1609 tmpp[1] = btoi(cdr.Prev[1]);
1610 tmpp[2] = btoi(cdr.Prev[2]);
1615 if (cdr.freeze_ver < 0x63647202)
1616 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1618 Find_CurTrack(cdr.SetSectorPlay);
1620 CDR_play(cdr.SetSectorPlay);
1621 if (psxRegs.interrupt & (1 << PSXINT_CDRPLAY_OLD))
1622 CDRPLAYSEEKREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1625 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1626 // old versions did not latch Reg2, have to fixup..
1627 if (cdr.Reg2 == 0) {
1628 SysPrintf("cdrom: fixing up old savestate\n");
1631 // also did not save Attenuator..
1632 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1633 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1635 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1643 void LidInterrupt(void) {
1645 cdrLidSeekInterrupt();