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 /* This adds the string "PCSX" in Playstation bios boot screen */
1022 memcpy((char *)&cdr.Result[4], "PCSX", 4);
1023 cdr.Stat = Complete;
1029 SetPlaySeekRead(cdr.StatP, 0);
1030 // yes, it really sets STATUS_SHELLOPEN
1031 cdr.StatP |= STATUS_SHELLOPEN;
1032 cdr.DriveState = DRIVESTATE_RESCAN_CD;
1043 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
1048 case CdlReadToc + 0x100:
1049 cdr.Stat = Complete;
1055 Find_CurTrack(cdr.SetlocPending ? cdr.SetSector : cdr.SetSectorPlay);
1057 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
1058 // Read* acts as play for cdda tracks in cdda mode
1062 if (cdr.SetlocPending) {
1063 seekTime = cdrSeekTime(cdr.SetSector);
1064 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
1065 cdr.SetlocPending = 0;
1068 cdr.FirstSector = 1;
1070 // Fighting Force 2 - update subq time immediately
1072 ReadTrack(cdr.SetSectorPlay);
1075 Duke Nukem: Land of the Babes - seek then delay read for one frame
1077 C-12 - Final Resistance - doesn't like seek
1081 By nicolasnoble from PCSX Redux :
1082 "It LOOKS like this logic is wrong, therefore disabling it with `&& false` for now.
1083 For "PoPoLoCrois Monogatari II", the game logic will soft lock and will never issue GetLocP to detect
1084 the end of its XA streams, as it seems to assume ReadS will not return a status byte with the SEEK
1085 flag set. I think the reasonning is that since it's invalid to call GetLocP while seeking, the game
1086 tries to protect itself against errors by preventing from issuing a GetLocP while it knows the
1087 last status was "seek". But this makes the logic just softlock as it'll never get a notification
1088 about the fact the drive is done seeking and the read actually started.
1090 In other words, this state machine here is probably wrong in assuming the response to ReadS/ReadN is
1091 done right away. It's rather when it's done seeking, and the read has actually started. This probably
1092 requires a bit more work to make sure seek delays are processed properly.
1093 Checked with a few games, this seems to work fine."
1095 Gameblabla additional notes :
1096 This still needs the "+ seekTime" that PCSX Redux doesn't have for the Driver "retry" mission error.
1098 CDRPLAYSEEKREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime);
1100 SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
1105 CDR_LOG_I("Invalid command: %02x\n", Irq);
1106 error = ERROR_INVALIDCMD;
1111 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1112 cdr.Result[1] = error;
1113 cdr.Stat = DiskError;
1117 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1118 cdr.DriveState = DRIVESTATE_STANDBY;
1119 cdr.StatP |= STATUS_ROTATING;
1122 if (!no_busy_error) {
1123 switch (cdr.DriveState) {
1124 case DRIVESTATE_LID_OPEN:
1125 case DRIVESTATE_RESCAN_CD:
1126 case DRIVESTATE_PREPARE_CD:
1128 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1129 cdr.Result[1] = ERROR_NOTREADY;
1130 cdr.Stat = DiskError;
1141 #define ssat32_to_16(v) \
1142 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1144 #define ssat32_to_16(v) do { \
1145 if (v < -32768) v = -32768; \
1146 else if (v > 32767) v = 32767; \
1150 void cdrAttenuate(s16 *buf, int samples, int stereo)
1153 int ll = cdr.AttenuatorLeftToLeft;
1154 int lr = cdr.AttenuatorLeftToRight;
1155 int rl = cdr.AttenuatorRightToLeft;
1156 int rr = cdr.AttenuatorRightToRight;
1158 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1161 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1165 for (i = 0; i < samples; i++) {
1168 l = (l * ll + r * rl) >> 7;
1169 r = (r * rr + l * lr) >> 7;
1177 for (i = 0; i < samples; i++) {
1179 l = l * (ll + rl) >> 7;
1180 //r = r * (rr + lr) >> 7;
1188 static void cdrReadInterrupt(void)
1192 if (cdr.Irq || cdr.Stat) {
1193 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1194 CDRPLAYSEEKREAD_INT(2048);
1200 SetPlaySeekRead(cdr.StatP, STATUS_READ | STATUS_ROTATING);
1201 cdr.Result[0] = cdr.StatP;
1203 ReadTrack(cdr.SetSectorPlay);
1205 buf = CDR_getBuffer();
1210 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1211 memset(cdr.Transfer, 0, DATA_SIZE);
1212 cdr.Stat = DiskError;
1213 cdr.Result[0] |= STATUS_ERROR;
1218 memcpy(cdr.Transfer, buf, DATA_SIZE);
1219 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1222 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1224 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1225 // Firemen 2: Multi-XA files - briefings, cutscenes
1226 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1227 cdr.File = cdr.Transfer[4 + 0];
1228 cdr.Channel = cdr.Transfer[4 + 1];
1232 * Skips playing on channel 255.
1233 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1234 * TODO : Check if this is the proper behaviour.
1236 if((cdr.Transfer[4 + 2] & 0x4) &&
1237 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1238 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1239 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1241 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1242 SPU_playADPCMchannel(&cdr.Xa);
1243 cdr.FirstSector = 0;
1245 else cdr.FirstSector = -1;
1249 cdr.SetSectorPlay[2]++;
1250 if (cdr.SetSectorPlay[2] == 75) {
1251 cdr.SetSectorPlay[2] = 0;
1252 cdr.SetSectorPlay[1]++;
1253 if (cdr.SetSectorPlay[1] == 60) {
1254 cdr.SetSectorPlay[1] = 0;
1255 cdr.SetSectorPlay[0]++;
1261 CDRPLAYSEEKREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
1264 Croc 2: $40 - only FORM1 (*)
1265 Judge Dredd: $C8 - only FORM1 (*)
1266 Sim Theme Park - no adpcm at all (zero)
1269 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1270 cdr.Stat = DataReady;
1274 // update for CdlGetlocP
1275 ReadTrack(cdr.SetSectorPlay);
1284 bit 5 - 1 result ready
1286 bit 7 - 1 command being processed
1289 unsigned char cdrRead0(void) {
1290 if (cdr.ResultReady)
1298 // cdr.Ctrl &= ~0x40;
1300 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1303 CDR_LOG_IO("cdr r0.sta: %02x\n", cdr.Ctrl);
1305 return psxHu8(0x1800) = cdr.Ctrl;
1308 void cdrWrite0(unsigned char rt) {
1309 CDR_LOG_IO("cdr w0.idx: %02x\n", rt);
1311 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1314 unsigned char cdrRead1(void) {
1315 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1316 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1320 if (cdr.ResultP == cdr.ResultC)
1321 cdr.ResultReady = 0;
1323 CDR_LOG_IO("cdr r1.rsp: %02x #%u\n", psxHu8(0x1801), cdr.ResultP - 1);
1325 return psxHu8(0x1801);
1328 void cdrWrite1(unsigned char rt) {
1329 const char *rnames[] = { "cmd", "smd", "smc", "arr" }; (void)rnames;
1330 CDR_LOG_IO("cdr w1.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1332 switch (cdr.Ctrl & 3) {
1336 cdr.AttenuatorRightToRightT = rt;
1345 #ifdef CDR_LOG_CMD_IRQ
1346 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1349 SysPrintf(" Param[%d] = {", cdr.ParamC);
1350 for (i = 0; i < cdr.ParamC; i++)
1351 SysPrintf(" %x,", cdr.Param[i]);
1358 cdr.ResultReady = 0;
1360 // cdr.Stat = NoIntr;
1361 AddIrqQueue(cdr.Cmd, 0x800);
1365 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1367 cdr.Mode = cdr.Param[0];
1372 unsigned char cdrRead2(void) {
1375 if (cdr.Readed == 0) {
1381 CDR_LOG_IO("cdr r2.dat: %02x\n", ret);
1385 void cdrWrite2(unsigned char rt) {
1386 const char *rnames[] = { "prm", "ien", "all", "arl" }; (void)rnames;
1387 CDR_LOG_IO("cdr w2.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1389 switch (cdr.Ctrl & 3) {
1391 if (cdr.ParamC < 8) // FIXME: size and wrapping
1392 cdr.Param[cdr.ParamC++] = rt;
1399 cdr.AttenuatorLeftToLeftT = rt;
1402 cdr.AttenuatorRightToLeftT = rt;
1407 unsigned char cdrRead3(void) {
1409 psxHu8(0x1803) = cdr.Stat | 0xE0;
1411 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1413 CDR_LOG_IO("cdr r3.%s: %02x\n", (cdr.Ctrl & 1) ? "ifl" : "ien", psxHu8(0x1803));
1414 return psxHu8(0x1803);
1417 void cdrWrite3(unsigned char rt) {
1418 const char *rnames[] = { "req", "ifl", "alr", "ava" }; (void)rnames;
1419 CDR_LOG_IO("cdr w3.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1421 switch (cdr.Ctrl & 3) {
1431 cdr.AttenuatorLeftToRightT = rt;
1435 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1436 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1437 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1438 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1443 if ((rt & 0x80) && cdr.Readed == 0) {
1445 pTransfer = cdr.Transfer;
1447 switch (cdr.Mode & 0x30) {
1448 case MODE_SIZE_2328:
1453 case MODE_SIZE_2340:
1463 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1468 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1473 if (cdr.Readed == 0) {
1474 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1478 cdsize = (bcr & 0xffff) * 4;
1480 // Ape Escape: bcr = 0001 / 0000
1484 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1485 case MODE_SIZE_2340: cdsize = 2340; break;
1486 case MODE_SIZE_2328: cdsize = 2328; break;
1488 case MODE_SIZE_2048: cdsize = 2048; break;
1493 ptr = (u8 *)PSXM(madr);
1494 if (ptr == INVALID_PTR) {
1495 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1500 GS CDX: Enhancement CD crash
1503 - Spams DMA3 and gets buffer overrun
1505 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1510 memcpy(ptr, pTransfer, size);
1513 psxCpu->Clear(madr, cdsize / 4);
1514 pTransfer += cdsize;
1516 if( chcr == 0x11400100 ) {
1517 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1518 CDRDMA_INT( (cdsize/4) / 4 );
1520 else if( chcr == 0x11000000 ) {
1521 // CDRDMA_INT( (cdsize/4) * 1 );
1523 psxRegs.cycle += (cdsize/4) * 24/2;
1529 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1533 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1537 void cdrDmaInterrupt(void)
1539 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1541 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1546 static void getCdInfo(void)
1550 CDR_getTN(cdr.ResultTN);
1551 CDR_getTD(0, cdr.SetSectorEnd);
1552 tmp = cdr.SetSectorEnd[0];
1553 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1554 cdr.SetSectorEnd[2] = tmp;
1558 memset(&cdr, 0, sizeof(cdr));
1564 cdr.DriveState = DRIVESTATE_STANDBY;
1565 cdr.StatP = STATUS_ROTATING;
1566 pTransfer = cdr.Transfer;
1568 // BIOS player - default values
1569 cdr.AttenuatorLeftToLeft = 0x80;
1570 cdr.AttenuatorLeftToRight = 0x00;
1571 cdr.AttenuatorRightToLeft = 0x00;
1572 cdr.AttenuatorRightToRight = 0x80;
1577 int cdrFreeze(void *f, int Mode) {
1581 if (Mode == 0 && !Config.Cdda)
1584 cdr.freeze_ver = 0x63647202;
1585 gzfreeze(&cdr, sizeof(cdr));
1588 cdr.ParamP = cdr.ParamC;
1589 tmp = pTransfer - cdr.Transfer;
1592 gzfreeze(&tmp, sizeof(tmp));
1597 pTransfer = cdr.Transfer + tmp;
1599 // read right sub data
1600 tmpp[0] = btoi(cdr.Prev[0]);
1601 tmpp[1] = btoi(cdr.Prev[1]);
1602 tmpp[2] = btoi(cdr.Prev[2]);
1607 if (cdr.freeze_ver < 0x63647202)
1608 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1610 Find_CurTrack(cdr.SetSectorPlay);
1612 CDR_play(cdr.SetSectorPlay);
1613 if (psxRegs.interrupt & (1 << PSXINT_CDRPLAY_OLD))
1614 CDRPLAYSEEKREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1617 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1618 // old versions did not latch Reg2, have to fixup..
1619 if (cdr.Reg2 == 0) {
1620 SysPrintf("cdrom: fixing up old savestate\n");
1623 // also did not save Attenuator..
1624 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1625 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1627 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1635 void LidInterrupt(void) {
1637 cdrLidSeekInterrupt();