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); \
245 #define CDREAD_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); \
261 #define CDRSEEKPLAY_INT(eCycle) { \
262 psxRegs.interrupt |= (1 << PSXINT_CDRPLAY); \
263 psxRegs.intCycle[PSXINT_CDRPLAY].cycle = eCycle; \
264 psxRegs.intCycle[PSXINT_CDRPLAY].sCycle = psxRegs.cycle; \
265 new_dyna_set_event(PSXINT_CDRPLAY, eCycle); \
268 #define StopReading() { \
270 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
273 #define StopCdda() { \
274 if (cdr.Play && !Config.Cdda) CDR_stop(); \
276 cdr.FastForward = 0; \
277 cdr.FastBackward = 0; \
280 #define SetPlaySeekRead(x, f) { \
281 x &= ~(STATUS_PLAY | STATUS_SEEK | STATUS_READ); \
285 #define SetResultSize(size) { \
287 cdr.ResultC = size; \
288 cdr.ResultReady = 1; \
291 static void setIrq(int log_cmd)
293 if (cdr.Stat & cdr.Reg2)
294 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
296 #ifdef CDR_LOG_CMD_IRQ
299 SysPrintf("CDR IRQ=%d cmd %02x stat %02x: ",
300 !!(cdr.Stat & cdr.Reg2), log_cmd, cdr.Stat);
301 for (i = 0; i < cdr.ResultC; i++)
302 SysPrintf("%02x ", cdr.Result[i]);
308 // timing used in this function was taken from tests on real hardware
309 // (yes it's slow, but you probably don't want to modify it)
310 void cdrLidSeekInterrupt()
312 switch (cdr.DriveState) {
314 case DRIVESTATE_STANDBY:
317 SetPlaySeekRead(cdr.StatP, 0);
319 if (CDR_getStatus(&stat) == -1)
322 if (stat.Status & STATUS_SHELLOPEN)
324 cdr.DriveState = DRIVESTATE_LID_OPEN;
329 case DRIVESTATE_LID_OPEN:
330 if (CDR_getStatus(&stat) == -1)
331 stat.Status &= ~STATUS_SHELLOPEN;
334 if (!(cdr.StatP & STATUS_SHELLOPEN)) {
335 cdr.StatP |= STATUS_SHELLOPEN;
337 // could generate error irq here, but real hardware
338 // only sometimes does that
339 // (not done when lots of commands are sent?)
341 CDRLID_INT(cdReadTime * 30);
344 else if (cdr.StatP & STATUS_ROTATING) {
345 cdr.StatP &= ~STATUS_ROTATING;
347 else if (!(stat.Status & STATUS_SHELLOPEN)) {
351 // cdr.StatP STATUS_SHELLOPEN is "sticky"
352 // and is only cleared by CdlNop
354 cdr.DriveState = DRIVESTATE_RESCAN_CD;
355 CDRLID_INT(cdReadTime * 105);
360 CDRLID_INT(cdReadTime * 3);
363 case DRIVESTATE_RESCAN_CD:
364 cdr.StatP |= STATUS_ROTATING;
365 cdr.DriveState = DRIVESTATE_PREPARE_CD;
367 // this is very long on real hardware, over 6 seconds
368 // make it a bit faster here...
369 CDRLID_INT(cdReadTime * 150);
372 case DRIVESTATE_PREPARE_CD:
373 cdr.StatP |= STATUS_SEEK;
375 cdr.DriveState = DRIVESTATE_STANDBY;
376 CDRLID_INT(cdReadTime * 26);
381 static void Find_CurTrack(const u8 *time)
385 current = msf2sec(time);
387 for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
388 CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
389 sect = fsm2sec(cdr.ResultTD);
390 if (sect - current >= 150)
395 static void generate_subq(const u8 *time)
397 unsigned char start[3], next[3];
398 unsigned int this_s, start_s, next_s, pregap;
401 CDR_getTD(cdr.CurTrack, start);
402 if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
404 CDR_getTD(cdr.CurTrack + 1, next);
407 // last track - cd size
409 next[0] = cdr.SetSectorEnd[2];
410 next[1] = cdr.SetSectorEnd[1];
411 next[2] = cdr.SetSectorEnd[0];
414 this_s = msf2sec(time);
415 start_s = fsm2sec(start);
416 next_s = fsm2sec(next);
418 cdr.TrackChanged = FALSE;
420 if (next_s - this_s < pregap) {
421 cdr.TrackChanged = TRUE;
428 relative_s = this_s - start_s;
429 if (relative_s < 0) {
431 relative_s = -relative_s;
433 sec2msf(relative_s, cdr.subq.Relative);
435 cdr.subq.Track = itob(cdr.CurTrack);
436 cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
437 cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
438 cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
439 cdr.subq.Absolute[0] = itob(time[0]);
440 cdr.subq.Absolute[1] = itob(time[1]);
441 cdr.subq.Absolute[2] = itob(time[2]);
444 static void ReadTrack(const u8 *time) {
445 unsigned char tmp[3];
449 tmp[0] = itob(time[0]);
450 tmp[1] = itob(time[1]);
451 tmp[2] = itob(time[2]);
453 if (memcmp(cdr.Prev, tmp, 3) == 0)
456 CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
458 cdr.NoErr = CDR_readTrack(tmp);
459 memcpy(cdr.Prev, tmp, 3);
464 subq = (struct SubQ *)CDR_getBufferSub();
465 if (subq != NULL && cdr.CurTrack == 1) {
466 crc = calcCrc((u8 *)subq + 12, 10);
467 if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
468 cdr.subq.Track = subq->TrackNumber;
469 cdr.subq.Index = subq->IndexNumber;
470 memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
471 memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
474 CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
475 tmp[0], tmp[1], tmp[2]);
482 CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
483 cdr.subq.Track, cdr.subq.Index,
484 cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
485 cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
488 static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
490 if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
496 CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
505 static void cdrPlayInterrupt_Autopause()
508 boolean abs_lev_chselect;
511 if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
512 CDR_LOG( "CDDA STOP\n" );
514 // Magic the Gathering
515 // - looping territory cdda
518 //cdr.ResultReady = 1;
519 //cdr.Stat = DataReady;
524 SetPlaySeekRead(cdr.StatP, 0);
526 else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
527 cdr.Result[0] = cdr.StatP;
528 cdr.Result[1] = cdr.subq.Track;
529 cdr.Result[2] = cdr.subq.Index;
531 abs_lev_chselect = cdr.subq.Absolute[1] & 0x01;
533 /* 8 is a hack. For accuracy, it should be 588. */
534 for (i = 0; i < 8; i++)
536 abs_lev_max = MAX_VALUE(abs_lev_max, abs(read_buf[i * 2 + abs_lev_chselect]));
538 abs_lev_max = MIN_VALUE(abs_lev_max, 32767);
539 abs_lev_max |= abs_lev_chselect << 15;
541 if (cdr.subq.Absolute[2] & 0x10) {
542 cdr.Result[3] = cdr.subq.Relative[0];
543 cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
544 cdr.Result[5] = cdr.subq.Relative[2];
547 cdr.Result[3] = cdr.subq.Absolute[0];
548 cdr.Result[4] = cdr.subq.Absolute[1];
549 cdr.Result[5] = cdr.subq.Absolute[2];
552 cdr.Result[6] = abs_lev_max >> 0;
553 cdr.Result[7] = abs_lev_max >> 8;
555 // Rayman: Logo freeze (resultready + dataready)
557 cdr.Stat = DataReady;
564 static int cdrSeekTime(unsigned char *target)
566 int seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(target)) * (cdReadTime / 200);
569 * It was originally set to 1000000 for Driver, however it is not high enough for Worms Pinball
570 * and was unreliable for that game.
571 * I also tested it against Mednafen and Driver's titlescreen music starts 25 frames later, not immediatly.
573 * Obviously, this isn't perfect but right now, it should be a bit better.
574 * Games to test this against if you change that setting :
575 * - Driver (titlescreen music delay and retry mission)
576 * - Worms Pinball (Will either not boot or crash in the memory card screen)
577 * - Viewpoint (short pauses if the delay in the ingame music is too long)
579 * It seems that 3386880 * 5 is too much for Driver's titlescreen and it starts skipping.
580 * However, 1000000 is not enough for Worms Pinball to reliably boot.
582 if(seekTime > 3386880 * 2) seekTime = 3386880 * 2;
583 CDR_LOG("seek: %.2f %.2f\n", (float)seekTime / PSXCLK, (float)seekTime / cdReadTime);
588 void cdrPlayInterrupt()
590 if (cdr.StatP & STATUS_SEEK) {
592 CDR_LOG_I("cdrom: seek stat hack\n");
593 CDRSEEKPLAY_INT(0x1000);
597 cdr.StatP |= STATUS_ROTATING;
598 SetPlaySeekRead(cdr.StatP, cdr.Play ? STATUS_PLAY : 0);
599 cdr.Result[0] = cdr.StatP;
605 Find_CurTrack(cdr.SetSectorPlay);
606 ReadTrack(cdr.SetSectorPlay);
607 cdr.TrackChanged = FALSE;
610 if (!cdr.Play) return;
612 CDR_LOG( "CDDA - %d:%d:%d\n",
613 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
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 CDRSEEKPLAY_INT(cdReadTime);
645 // update for CdlGetlocP/autopause
646 generate_subq(cdr.SetSectorPlay);
649 void cdrInterrupt() {
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 CDRSEEKPLAY_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 CDRSEEKPLAY_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 CDREAD_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 void cdrReadInterrupt() {
1202 if (cdr.Irq || cdr.Stat) {
1203 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1210 SetPlaySeekRead(cdr.StatP, STATUS_READ | STATUS_ROTATING);
1211 cdr.Result[0] = cdr.StatP;
1213 ReadTrack(cdr.SetSectorPlay);
1215 buf = CDR_getBuffer();
1220 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1221 memset(cdr.Transfer, 0, DATA_SIZE);
1222 cdr.Stat = DiskError;
1223 cdr.Result[0] |= STATUS_ERROR;
1224 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1228 memcpy(cdr.Transfer, buf, DATA_SIZE);
1229 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1232 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1234 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1235 // Firemen 2: Multi-XA files - briefings, cutscenes
1236 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1237 cdr.File = cdr.Transfer[4 + 0];
1238 cdr.Channel = cdr.Transfer[4 + 1];
1242 * Skips playing on channel 255.
1243 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1244 * TODO : Check if this is the proper behaviour.
1246 if((cdr.Transfer[4 + 2] & 0x4) &&
1247 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1248 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1249 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1251 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1252 SPU_playADPCMchannel(&cdr.Xa);
1253 cdr.FirstSector = 0;
1255 else cdr.FirstSector = -1;
1259 cdr.SetSectorPlay[2]++;
1260 if (cdr.SetSectorPlay[2] == 75) {
1261 cdr.SetSectorPlay[2] = 0;
1262 cdr.SetSectorPlay[1]++;
1263 if (cdr.SetSectorPlay[1] == 60) {
1264 cdr.SetSectorPlay[1] = 0;
1265 cdr.SetSectorPlay[0]++;
1271 CDREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
1274 Croc 2: $40 - only FORM1 (*)
1275 Judge Dredd: $C8 - only FORM1 (*)
1276 Sim Theme Park - no adpcm at all (zero)
1279 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1280 cdr.Stat = DataReady;
1284 // update for CdlGetlocP
1285 ReadTrack(cdr.SetSectorPlay);
1294 bit 5 - 1 result ready
1296 bit 7 - 1 command being processed
1299 unsigned char cdrRead0(void) {
1300 if (cdr.ResultReady)
1308 // cdr.Ctrl &= ~0x40;
1310 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1313 CDR_LOG_IO("cdr r0.sta: %02x\n", cdr.Ctrl);
1315 return psxHu8(0x1800) = cdr.Ctrl;
1318 void cdrWrite0(unsigned char rt) {
1319 CDR_LOG_IO("cdr w0.idx: %02x\n", rt);
1321 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1324 unsigned char cdrRead1(void) {
1325 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1326 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1330 if (cdr.ResultP == cdr.ResultC)
1331 cdr.ResultReady = 0;
1333 CDR_LOG_IO("cdr r1.rsp: %02x #%u\n", psxHu8(0x1801), cdr.ResultP - 1);
1335 return psxHu8(0x1801);
1338 void cdrWrite1(unsigned char rt) {
1339 const char *rnames[] = { "cmd", "smd", "smc", "arr" }; (void)rnames;
1340 CDR_LOG_IO("cdr w1.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1342 switch (cdr.Ctrl & 3) {
1346 cdr.AttenuatorRightToRightT = rt;
1355 #ifdef CDR_LOG_CMD_IRQ
1356 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1359 SysPrintf(" Param[%d] = {", cdr.ParamC);
1360 for (i = 0; i < cdr.ParamC; i++)
1361 SysPrintf(" %x,", cdr.Param[i]);
1368 cdr.ResultReady = 0;
1370 // cdr.Stat = NoIntr;
1371 AddIrqQueue(cdr.Cmd, 0x800);
1375 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1377 cdr.Mode = cdr.Param[0];
1382 unsigned char cdrRead2(void) {
1385 if (cdr.Readed == 0) {
1391 CDR_LOG_IO("cdr r2.dat: %02x\n", ret);
1395 void cdrWrite2(unsigned char rt) {
1396 const char *rnames[] = { "prm", "ien", "all", "arl" }; (void)rnames;
1397 CDR_LOG_IO("cdr w2.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1399 switch (cdr.Ctrl & 3) {
1401 if (cdr.ParamC < 8) // FIXME: size and wrapping
1402 cdr.Param[cdr.ParamC++] = rt;
1409 cdr.AttenuatorLeftToLeftT = rt;
1412 cdr.AttenuatorRightToLeftT = rt;
1417 unsigned char cdrRead3(void) {
1419 psxHu8(0x1803) = cdr.Stat | 0xE0;
1421 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1423 CDR_LOG_IO("cdr r3.%s: %02x\n", (cdr.Ctrl & 1) ? "ifl" : "ien", psxHu8(0x1803));
1424 return psxHu8(0x1803);
1427 void cdrWrite3(unsigned char rt) {
1428 const char *rnames[] = { "req", "ifl", "alr", "ava" }; (void)rnames;
1429 CDR_LOG_IO("cdr w3.%s: %02x\n", rnames[cdr.Ctrl & 3], rt);
1431 switch (cdr.Ctrl & 3) {
1441 cdr.AttenuatorLeftToRightT = rt;
1445 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1446 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1447 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1448 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1453 if ((rt & 0x80) && cdr.Readed == 0) {
1455 pTransfer = cdr.Transfer;
1457 switch (cdr.Mode & 0x30) {
1458 case MODE_SIZE_2328:
1463 case MODE_SIZE_2340:
1473 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1478 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1483 if (cdr.Readed == 0) {
1484 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1488 cdsize = (bcr & 0xffff) * 4;
1490 // Ape Escape: bcr = 0001 / 0000
1494 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1495 case MODE_SIZE_2340: cdsize = 2340; break;
1496 case MODE_SIZE_2328: cdsize = 2328; break;
1498 case MODE_SIZE_2048: cdsize = 2048; break;
1503 ptr = (u8 *)PSXM(madr);
1505 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1510 GS CDX: Enhancement CD crash
1513 - Spams DMA3 and gets buffer overrun
1515 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1520 memcpy(ptr, pTransfer, size);
1523 psxCpu->Clear(madr, cdsize / 4);
1524 pTransfer += cdsize;
1526 if( chcr == 0x11400100 ) {
1527 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1528 CDRDMA_INT( (cdsize/4) / 4 );
1530 else if( chcr == 0x11000000 ) {
1531 // CDRDMA_INT( (cdsize/4) * 1 );
1533 psxRegs.cycle += (cdsize/4) * 24/2;
1539 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1543 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1547 void cdrDmaInterrupt()
1549 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1551 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1556 static void getCdInfo(void)
1560 CDR_getTN(cdr.ResultTN);
1561 CDR_getTD(0, cdr.SetSectorEnd);
1562 tmp = cdr.SetSectorEnd[0];
1563 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1564 cdr.SetSectorEnd[2] = tmp;
1568 memset(&cdr, 0, sizeof(cdr));
1574 cdr.DriveState = DRIVESTATE_STANDBY;
1575 cdr.StatP = STATUS_ROTATING;
1576 pTransfer = cdr.Transfer;
1578 // BIOS player - default values
1579 cdr.AttenuatorLeftToLeft = 0x80;
1580 cdr.AttenuatorLeftToRight = 0x00;
1581 cdr.AttenuatorRightToLeft = 0x00;
1582 cdr.AttenuatorRightToRight = 0x80;
1587 int cdrFreeze(void *f, int Mode) {
1591 if (Mode == 0 && !Config.Cdda)
1594 cdr.freeze_ver = 0x63647202;
1595 gzfreeze(&cdr, sizeof(cdr));
1598 cdr.ParamP = cdr.ParamC;
1599 tmp = pTransfer - cdr.Transfer;
1602 gzfreeze(&tmp, sizeof(tmp));
1607 pTransfer = cdr.Transfer + tmp;
1609 // read right sub data
1610 tmpp[0] = btoi(cdr.Prev[0]);
1611 tmpp[1] = btoi(cdr.Prev[1]);
1612 tmpp[2] = btoi(cdr.Prev[2]);
1617 if (cdr.freeze_ver < 0x63647202)
1618 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1620 Find_CurTrack(cdr.SetSectorPlay);
1622 CDR_play(cdr.SetSectorPlay);
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() {
1645 cdrLidSeekInterrupt();