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
48 static unsigned char *pTransfer;
49 static s16 read_buf[CD_FRAMESIZE_RAW/2];
51 /* CD-ROM magic numbers */
52 #define CdlSync 0 /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
65 #define CdlSetfilter 13
67 #define CdlGetparam 15
75 #define CdlSetclock 23
76 #define CdlGetclock 24
84 char *CmdName[0x100]= {
85 "CdlSync", "CdlNop", "CdlSetloc", "CdlPlay",
86 "CdlForward", "CdlBackward", "CdlReadN", "CdlStandby",
87 "CdlStop", "CdlPause", "CdlReset", "CdlMute",
88 "CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetparam",
89 "CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
90 "CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
91 "CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
92 "CdlInit", NULL, "CDlReadToc", NULL
95 unsigned char Test04[] = { 0 };
96 unsigned char Test05[] = { 0 };
97 unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
98 unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
99 unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
105 #define Acknowledge 3
110 #define MODE_SPEED (1<<7) // 0x80
111 #define MODE_STRSND (1<<6) // 0x40 ADPCM on/off
112 #define MODE_SIZE_2340 (1<<5) // 0x20
113 #define MODE_SIZE_2328 (1<<4) // 0x10
114 #define MODE_SIZE_2048 (0<<4) // 0x00
115 #define MODE_SF (1<<3) // 0x08 channel on/off
116 #define MODE_REPORT (1<<2) // 0x04
117 #define MODE_AUTOPAUSE (1<<1) // 0x02
118 #define MODE_CDDA (1<<0) // 0x01
121 #define STATUS_PLAY (1<<7) // 0x80
122 #define STATUS_SEEK (1<<6) // 0x40
123 #define STATUS_READ (1<<5) // 0x20
124 #define STATUS_SHELLOPEN (1<<4) // 0x10
125 #define STATUS_UNKNOWN3 (1<<3) // 0x08
126 #define STATUS_UNKNOWN2 (1<<2) // 0x04
127 #define STATUS_ROTATING (1<<1) // 0x02
128 #define STATUS_ERROR (1<<0) // 0x01
131 #define ERROR_NOTREADY (1<<7) // 0x80
132 #define ERROR_INVALIDCMD (1<<6) // 0x40
133 #define ERROR_INVALIDARG (1<<5) // 0x20
135 // 1x = 75 sectors per second
136 // PSXCLK = 1 sec in the ps
137 // so (PSXCLK / 75) = cdr read time (linuzappz)
138 #define cdReadTime (PSXCLK / 75)
141 DRIVESTATE_STANDBY = 0,
143 DRIVESTATE_RESCAN_CD,
144 DRIVESTATE_PREPARE_CD,
154 static struct CdrStat stat;
156 static unsigned int msf2sec(const u8 *msf) {
157 return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
160 // for that weird psemu API..
161 static unsigned int fsm2sec(const u8 *msf) {
162 return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
165 static void sec2msf(unsigned int s, u8 *msf) {
166 msf[0] = s / 75 / 60;
167 s = s - msf[0] * 75 * 60;
174 #define CDR_INT(eCycle) { \
175 psxRegs.interrupt |= (1 << PSXINT_CDR); \
176 psxRegs.intCycle[PSXINT_CDR].cycle = eCycle; \
177 psxRegs.intCycle[PSXINT_CDR].sCycle = psxRegs.cycle; \
178 new_dyna_set_event(PSXINT_CDR, eCycle); \
182 #define CDREAD_INT(eCycle) { \
183 psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
184 psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
185 psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
186 new_dyna_set_event(PSXINT_CDREAD, eCycle); \
189 // cdrLidSeekInterrupt
190 #define CDRLID_INT(eCycle) { \
191 psxRegs.interrupt |= (1 << PSXINT_CDRLID); \
192 psxRegs.intCycle[PSXINT_CDRLID].cycle = eCycle; \
193 psxRegs.intCycle[PSXINT_CDRLID].sCycle = psxRegs.cycle; \
194 new_dyna_set_event(PSXINT_CDRLID, eCycle); \
198 #define CDRMISC_INT(eCycle) { \
199 psxRegs.interrupt |= (1 << PSXINT_CDRPLAY); \
200 psxRegs.intCycle[PSXINT_CDRPLAY].cycle = eCycle; \
201 psxRegs.intCycle[PSXINT_CDRPLAY].sCycle = psxRegs.cycle; \
202 new_dyna_set_event(PSXINT_CDRPLAY, eCycle); \
205 #define StopReading() { \
208 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
210 cdr.StatP &= ~(STATUS_READ|STATUS_SEEK);\
213 #define StopCdda() { \
215 if (!Config.Cdda) CDR_stop(); \
216 cdr.StatP &= ~STATUS_PLAY; \
218 cdr.FastForward = 0; \
219 cdr.FastBackward = 0; \
220 /*SPU_registerCallback( SPUirq );*/ \
224 #define SetResultSize(size) { \
226 cdr.ResultC = size; \
227 cdr.ResultReady = 1; \
230 static void setIrq(void)
232 if (cdr.Stat & cdr.Reg2)
233 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
236 // timing used in this function was taken from tests on real hardware
237 // (yes it's slow, but you probably don't want to modify it)
238 void cdrLidSeekInterrupt()
240 switch (cdr.DriveState) {
242 case DRIVESTATE_STANDBY:
243 cdr.StatP &= ~STATUS_SEEK;
245 if (CDR_getStatus(&stat) == -1)
248 if (stat.Status & STATUS_SHELLOPEN)
251 cdr.DriveState = DRIVESTATE_LID_OPEN;
256 case DRIVESTATE_LID_OPEN:
257 if (CDR_getStatus(&stat) == -1)
258 stat.Status &= ~STATUS_SHELLOPEN;
261 if (!(cdr.StatP & STATUS_SHELLOPEN)) {
263 cdr.StatP |= STATUS_SHELLOPEN;
265 // could generate error irq here, but real hardware
266 // only sometimes does that
267 // (not done when lots of commands are sent?)
269 CDRLID_INT(cdReadTime * 30);
272 else if (cdr.StatP & STATUS_ROTATING) {
273 cdr.StatP &= ~STATUS_ROTATING;
275 else if (!(stat.Status & STATUS_SHELLOPEN)) {
279 // cdr.StatP STATUS_SHELLOPEN is "sticky"
280 // and is only cleared by CdlNop
282 cdr.DriveState = DRIVESTATE_RESCAN_CD;
283 CDRLID_INT(cdReadTime * 105);
288 CDRLID_INT(cdReadTime * 3);
291 case DRIVESTATE_RESCAN_CD:
292 cdr.StatP |= STATUS_ROTATING;
293 cdr.DriveState = DRIVESTATE_PREPARE_CD;
295 // this is very long on real hardware, over 6 seconds
296 // make it a bit faster here...
297 CDRLID_INT(cdReadTime * 150);
300 case DRIVESTATE_PREPARE_CD:
301 cdr.StatP |= STATUS_SEEK;
303 cdr.DriveState = DRIVESTATE_STANDBY;
304 CDRLID_INT(cdReadTime * 26);
309 static void Find_CurTrack(const u8 *time)
313 current = msf2sec(time);
315 for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
316 CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
317 sect = fsm2sec(cdr.ResultTD);
318 if (sect - current >= 150)
323 static void generate_subq(const u8 *time)
325 unsigned char start[3], next[3];
326 unsigned int this_s, start_s, next_s, pregap;
329 CDR_getTD(cdr.CurTrack, start);
330 if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
332 CDR_getTD(cdr.CurTrack + 1, next);
335 // last track - cd size
337 next[0] = cdr.SetSectorEnd[2];
338 next[1] = cdr.SetSectorEnd[1];
339 next[2] = cdr.SetSectorEnd[0];
342 this_s = msf2sec(time);
343 start_s = fsm2sec(start);
344 next_s = fsm2sec(next);
346 cdr.TrackChanged = FALSE;
348 if (next_s - this_s < pregap) {
349 cdr.TrackChanged = TRUE;
356 relative_s = this_s - start_s;
357 if (relative_s < 0) {
359 relative_s = -relative_s;
361 sec2msf(relative_s, cdr.subq.Relative);
363 cdr.subq.Track = itob(cdr.CurTrack);
364 cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
365 cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
366 cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
367 cdr.subq.Absolute[0] = itob(time[0]);
368 cdr.subq.Absolute[1] = itob(time[1]);
369 cdr.subq.Absolute[2] = itob(time[2]);
372 static void ReadTrack(const u8 *time) {
373 unsigned char tmp[3];
377 tmp[0] = itob(time[0]);
378 tmp[1] = itob(time[1]);
379 tmp[2] = itob(time[2]);
381 if (memcmp(cdr.Prev, tmp, 3) == 0)
384 CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
386 cdr.NoErr = CDR_readTrack(tmp);
387 memcpy(cdr.Prev, tmp, 3);
392 subq = (struct SubQ *)CDR_getBufferSub();
393 if (subq != NULL && cdr.CurTrack == 1) {
394 crc = calcCrc((u8 *)subq + 12, 10);
395 if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
396 cdr.subq.Track = subq->TrackNumber;
397 cdr.subq.Index = subq->IndexNumber;
398 memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
399 memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
402 CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
403 tmp[0], tmp[1], tmp[2]);
410 CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
411 cdr.subq.Track, cdr.subq.Index,
412 cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
413 cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
416 static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
418 if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
424 CDR_LOG_I("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
433 static void cdrPlayInterrupt_Autopause()
436 boolean abs_lev_chselect;
439 if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
440 CDR_LOG( "CDDA STOP\n" );
442 // Magic the Gathering
443 // - looping territory cdda
446 //cdr.ResultReady = 1;
447 //cdr.Stat = DataReady;
453 else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
454 CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
455 cdr.Result[0] = cdr.StatP;
456 cdr.Result[1] = cdr.subq.Track;
457 cdr.Result[2] = cdr.subq.Index;
459 abs_lev_chselect = cdr.subq.Absolute[1] & 0x01;
461 /* 8 is a hack. For accuracy, it should be 588. */
462 for (i = 0; i < 8; i++)
464 abs_lev_max = MAX_VALUE(abs_lev_max, abs(read_buf[i * 2 + abs_lev_chselect]));
466 abs_lev_max = MIN_VALUE(abs_lev_max, 32767);
467 abs_lev_max |= abs_lev_chselect << 15;
469 if (cdr.subq.Absolute[2] & 0x10) {
470 cdr.Result[3] = cdr.subq.Relative[0];
471 cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
472 cdr.Result[5] = cdr.subq.Relative[2];
475 cdr.Result[3] = cdr.subq.Absolute[0];
476 cdr.Result[4] = cdr.subq.Absolute[1];
477 cdr.Result[5] = cdr.subq.Absolute[2];
480 cdr.Result[6] = abs_lev_max >> 0;
481 cdr.Result[7] = abs_lev_max >> 8;
483 // Rayman: Logo freeze (resultready + dataready)
485 cdr.Stat = DataReady;
493 void cdrPlayInterrupt()
495 if (cdr.Seeked == SEEK_PENDING) {
497 CDR_LOG_I("cdrom: seek stat hack\n");
502 cdr.StatP |= STATUS_ROTATING;
503 cdr.StatP &= ~STATUS_SEEK;
504 cdr.Result[0] = cdr.StatP;
505 cdr.Seeked = SEEK_DONE;
511 if (cdr.SetlocPending) {
512 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
513 cdr.SetlocPending = 0;
514 cdr.m_locationChanged = TRUE;
516 Find_CurTrack(cdr.SetSectorPlay);
517 ReadTrack(cdr.SetSectorPlay);
518 cdr.TrackChanged = FALSE;
521 if (!cdr.Play) return;
523 CDR_LOG( "CDDA - %d:%d:%d\n",
524 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
526 if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
528 cdr.TrackChanged = TRUE;
531 if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
532 cdrPlayInterrupt_Autopause();
534 if (!cdr.Play) return;
536 if (CDR_readCDDA && !cdr.Muted && cdr.Mode & MODE_REPORT) {
537 cdrAttenuate(read_buf, CD_FRAMESIZE_RAW / 4, 1);
538 if (SPU_playCDDAchannel)
539 SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW);
542 cdr.SetSectorPlay[2]++;
543 if (cdr.SetSectorPlay[2] == 75) {
544 cdr.SetSectorPlay[2] = 0;
545 cdr.SetSectorPlay[1]++;
546 if (cdr.SetSectorPlay[1] == 60) {
547 cdr.SetSectorPlay[1] = 0;
548 cdr.SetSectorPlay[0]++;
552 if (cdr.m_locationChanged)
554 CDRMISC_INT(cdReadTime * 30);
555 cdr.m_locationChanged = FALSE;
559 CDRMISC_INT(cdReadTime);
562 // update for CdlGetlocP/autopause
563 generate_subq(cdr.SetSectorPlay);
566 void cdrInterrupt() {
568 int no_busy_error = 0;
569 int start_rotating = 0;
572 unsigned int seekTime = 0;
578 CDR_LOG_I("cdrom: stat hack: %02x %x\n", cdr.Irq, cdr.Stat);
587 cdr.Result[0] = cdr.StatP;
588 cdr.Stat = Acknowledge;
590 if (cdr.IrqRepeated) {
592 if (cdr.eCycle > psxRegs.cycle) {
602 if (cdr.DriveState != DRIVESTATE_LID_OPEN)
603 cdr.StatP &= ~STATUS_SHELLOPEN;
608 CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
610 // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
611 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))
613 CDR_LOG("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
614 error = ERROR_INVALIDARG;
619 for (i = 0; i < 3; i++)
621 set_loc[i] = btoi(cdr.Param[i]);
624 i = msf2sec(cdr.SetSectorPlay);
625 i = abs(i - msf2sec(set_loc));
627 cdr.Seeked = SEEK_PENDING;
629 memcpy(cdr.SetSector, set_loc, 3);
630 cdr.SetSector[3] = 0;
631 cdr.SetlocPending = 1;
638 if (cdr.Seeked == SEEK_PENDING) {
639 // XXX: wrong, should seek instead..
640 cdr.Seeked = SEEK_DONE;
643 cdr.FastBackward = 0;
646 if (cdr.SetlocPending) {
647 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
648 cdr.SetlocPending = 0;
649 cdr.m_locationChanged = TRUE;
653 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
655 if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
656 CDR_LOG("PLAY Resume @ %d:%d:%d\n",
657 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
661 int track = btoi( cdr.Param[0] );
663 if (track <= cdr.ResultTN[1])
664 cdr.CurTrack = track;
666 CDR_LOG("PLAY track %d\n", cdr.CurTrack);
668 if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
669 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
670 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
671 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
676 Rayman: detect track changes
679 Twisted Metal 2: skip PREGAP + starting accurate SubQ
680 - plays tracks without retry play
682 Wild 9: skip PREGAP + starting accurate SubQ
683 - plays tracks without retry play
685 Find_CurTrack(cdr.SetSectorPlay);
686 ReadTrack(cdr.SetSectorPlay);
687 cdr.TrackChanged = FALSE;
692 // Vib Ribbon: gameplay checks flag
693 cdr.StatP &= ~STATUS_SEEK;
694 cdr.Result[0] = cdr.StatP;
696 cdr.StatP |= STATUS_PLAY;
698 // BIOS player - set flag again
701 CDRMISC_INT( cdReadTime );
706 // TODO: error 80 if stopped
708 // GameShark CD Player: Calls 2x + Play 2x
710 cdr.FastBackward = 0;
716 // GameShark CD Player: Calls 2x + Play 2x
722 if (cdr.DriveState != DRIVESTATE_STOPPED) {
723 error = ERROR_INVALIDARG;
726 AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
730 case CdlStandby + 0x100:
736 // grab time for current track
737 CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
739 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
740 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
741 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
748 if (cdr.DriveState == DRIVESTATE_STANDBY)
749 delay = cdReadTime * 30 / 2;
751 cdr.DriveState = DRIVESTATE_STOPPED;
752 AddIrqQueue(CdlStop + 0x100, delay);
755 case CdlStop + 0x100:
756 cdr.StatP &= ~STATUS_ROTATING;
757 cdr.Result[0] = cdr.StatP;
763 Gundam Battle Assault 2: much slower (*)
764 - Fixes boot, gameplay
765 Hokuto no Ken 2: slower
766 - Fixes intro + subtitles
767 InuYasha - Feudal Fairy Tale: slower
770 /* Gameblabla - Tightening the timings (as taken from Duckstation).
771 * The timings from Duckstation are based upon hardware tests.
772 * Mednafen's timing don't work for Gundam Battle Assault 2 in PAL/50hz mode,
773 * seems to be timing sensitive as it can depend on the CPU's clock speed.
775 * We will need to get around this for Bedlam/Rise 2 later...
777 if (cdr.DriveState != DRIVESTATE_STANDBY)
783 delay = (((cdr.Mode & MODE_SPEED) ? 2 : 1) * (1000000));
784 CDRMISC_INT((cdr.Mode & MODE_SPEED) ? cdReadTime / 2 : cdReadTime);
786 AddIrqQueue(CdlPause + 0x100, delay);
790 case CdlPause + 0x100:
791 cdr.StatP &= ~STATUS_READ;
792 cdr.Result[0] = cdr.StatP;
798 cdr.Mode = 0x20; /* Needed for This is Football 2, Pooh's Party and possibly others. */
799 AddIrqQueue(CdlReset + 0x100, 4100000);
804 case CdlReset + 0x100:
817 cdr.File = cdr.Param[0];
818 cdr.Channel = cdr.Param[1];
827 cdr.Result[1] = cdr.Mode;
829 cdr.Result[3] = cdr.File;
830 cdr.Result[4] = cdr.Channel;
836 memcpy(cdr.Result, cdr.Transfer, 8);
841 memcpy(&cdr.Result, &cdr.subq, 8);
843 if (!cdr.Play && !cdr.Reading)
844 cdr.Result[1] = 0; // HACK?
847 case CdlReadT: // SetSession?
849 AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
853 case CdlReadT + 0x100:
859 if (CDR_getTN(cdr.ResultTN) == -1) {
860 cdr.Stat = DiskError;
861 cdr.Result[0] |= STATUS_ERROR;
863 cdr.Stat = Acknowledge;
864 cdr.Result[1] = itob(cdr.ResultTN[0]);
865 cdr.Result[2] = itob(cdr.ResultTN[1]);
870 cdr.Track = btoi(cdr.Param[0]);
872 if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
873 cdr.Stat = DiskError;
874 cdr.Result[0] |= STATUS_ERROR;
876 cdr.Stat = Acknowledge;
877 cdr.Result[0] = cdr.StatP;
878 cdr.Result[1] = itob(cdr.ResultTD[2]);
879 cdr.Result[2] = itob(cdr.ResultTD[1]);
880 /* According to Nocash's documentation, the function doesn't care about ff.
881 * This can be seen also in Mednafen's implementation. */
882 //cdr.Result[3] = itob(cdr.ResultTD[0]);
890 cdr.StatP |= STATUS_SEEK;
893 Crusaders of Might and Magic = 0.5x-4x
894 - fix cutscene speech start
900 - fix cutscene speech
905 CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
906 cdr.Seeked = SEEK_PENDING;
911 switch (cdr.Param[0]) {
912 case 0x20: // System Controller ROM Version
914 memcpy(cdr.Result, Test20, 4);
918 memcpy(cdr.Result, Test22, 4);
920 case 0x23: case 0x24:
922 memcpy(cdr.Result, Test23, 4);
929 AddIrqQueue(CdlID + 0x100, 20480);
934 cdr.Result[0] = cdr.StatP;
939 // 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
940 if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
941 cdr.Result[1] = 0xc0;
945 cdr.Result[1] |= 0x10;
946 if (CdromId[0] == '\0')
947 cdr.Result[1] |= 0x80;
949 cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
951 /* This adds the string "PCSX" in Playstation bios boot screen */
952 memcpy((char *)&cdr.Result[4], "PCSX", 4);
957 // yes, it really sets STATUS_SHELLOPEN
958 cdr.StatP |= STATUS_SHELLOPEN;
959 cdr.DriveState = DRIVESTATE_RESCAN_CD;
970 AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
975 case CdlReadToc + 0x100:
982 if (cdr.SetlocPending) {
983 seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
986 * It was originally set to 1000000 for Driver, however it is not high enough for Worms Pinball
987 * and was unreliable for that game.
988 * I also tested it against Mednafen and Driver's titlescreen music starts 25 frames later, not immediatly.
990 * Obviously, this isn't perfect but right now, it should be a bit better.
991 * Games to test this against if you change that setting :
992 * - Driver (titlescreen music delay and retry mission)
993 * - Worms Pinball (Will either not boot or crash in the memory card screen)
994 * - Viewpoint (short pauses if the delay in the ingame music is too long)
996 * It seems that 3386880 * 5 is too much for Driver's titlescreen and it starts skipping.
997 * However, 1000000 is not enough for Worms Pinball to reliably boot.
999 if(seekTime > 3386880 * 2) seekTime = 3386880 * 2;
1000 memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
1001 cdr.SetlocPending = 0;
1002 cdr.m_locationChanged = TRUE;
1004 Find_CurTrack(cdr.SetSectorPlay);
1006 if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
1007 // Read* acts as play for cdda tracks in cdda mode
1011 cdr.FirstSector = 1;
1013 // Fighting Force 2 - update subq time immediately
1015 ReadTrack(cdr.SetSectorPlay);
1018 // Crusaders of Might and Magic - update getlocl now
1019 // - fixes cutscene speech
1021 u8 *buf = CDR_getBuffer();
1023 memcpy(cdr.Transfer, buf, 8);
1027 Duke Nukem: Land of the Babes - seek then delay read for one frame
1029 C-12 - Final Resistance - doesn't like seek
1033 By nicolasnoble from PCSX Redux :
1034 "It LOOKS like this logic is wrong, therefore disabling it with `&& false` for now.
1035 For "PoPoLoCrois Monogatari II", the game logic will soft lock and will never issue GetLocP to detect
1036 the end of its XA streams, as it seems to assume ReadS will not return a status byte with the SEEK
1037 flag set. I think the reasonning is that since it's invalid to call GetLocP while seeking, the game
1038 tries to protect itself against errors by preventing from issuing a GetLocP while it knows the
1039 last status was "seek". But this makes the logic just softlock as it'll never get a notification
1040 about the fact the drive is done seeking and the read actually started.
1041 In other words, this state machine here is probably wrong in assuming the response to ReadS/ReadN is
1042 done right away. It's rather when it's done seeking, and the read has actually started. This probably
1043 requires a bit more work to make sure seek delays are processed properly.
1044 Checked with a few games, this seems to work fine."
1046 Gameblabla additional notes :
1047 This still needs the "+ seekTime" that PCSX Redux doesn't have for the Driver "retry" mission error.
1049 cdr.StatP |= STATUS_READ;
1050 cdr.StatP &= ~STATUS_SEEK;
1051 CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime);
1053 cdr.Result[0] = cdr.StatP;
1059 CDR_LOG_I("Invalid command: %02x\n", Irq);
1060 error = ERROR_INVALIDCMD;
1065 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1066 cdr.Result[1] = error;
1067 cdr.Stat = DiskError;
1071 if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
1072 cdr.DriveState = DRIVESTATE_STANDBY;
1073 cdr.StatP |= STATUS_ROTATING;
1076 if (!no_busy_error) {
1077 switch (cdr.DriveState) {
1078 case DRIVESTATE_LID_OPEN:
1079 case DRIVESTATE_RESCAN_CD:
1080 case DRIVESTATE_PREPARE_CD:
1082 cdr.Result[0] = cdr.StatP | STATUS_ERROR;
1083 cdr.Result[1] = ERROR_NOTREADY;
1084 cdr.Stat = DiskError;
1093 #ifdef CDR_LOG_CMD_IRQ
1096 SysPrintf("CDR IRQ %d cmd %02x stat %02x: ",
1097 !!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
1098 for (i = 0; i < cdr.ResultC; i++)
1099 SysPrintf("%02x ", cdr.Result[i]);
1106 #define ssat32_to_16(v) \
1107 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
1109 #define ssat32_to_16(v) do { \
1110 if (v < -32768) v = -32768; \
1111 else if (v > 32767) v = 32767; \
1115 void cdrAttenuate(s16 *buf, int samples, int stereo)
1118 int ll = cdr.AttenuatorLeftToLeft;
1119 int lr = cdr.AttenuatorLeftToRight;
1120 int rl = cdr.AttenuatorRightToLeft;
1121 int rr = cdr.AttenuatorRightToRight;
1123 if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
1126 if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
1130 for (i = 0; i < samples; i++) {
1133 l = (l * ll + r * rl) >> 7;
1134 r = (r * rr + l * lr) >> 7;
1142 for (i = 0; i < samples; i++) {
1144 l = l * (ll + rl) >> 7;
1145 //r = r * (rr + lr) >> 7;
1153 void cdrReadInterrupt() {
1159 if (cdr.Irq || cdr.Stat) {
1160 CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
1167 cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1168 cdr.StatP &= ~STATUS_SEEK;
1169 cdr.Result[0] = cdr.StatP;
1170 cdr.Seeked = SEEK_DONE;
1172 ReadTrack(cdr.SetSectorPlay);
1174 buf = CDR_getBuffer();
1178 if (cdr.NoErr == 0) {
1179 CDR_LOG_I("cdrReadInterrupt() Log: err\n");
1180 memset(cdr.Transfer, 0, DATA_SIZE);
1181 cdr.Stat = DiskError;
1182 cdr.Result[0] |= STATUS_ERROR;
1183 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1187 memcpy(cdr.Transfer, buf, DATA_SIZE);
1188 CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1191 CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1193 if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1194 // Firemen 2: Multi-XA files - briefings, cutscenes
1195 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1196 cdr.File = cdr.Transfer[4 + 0];
1197 cdr.Channel = cdr.Transfer[4 + 1];
1201 * Skips playing on channel 255.
1202 * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
1203 * TODO : Check if this is the proper behaviour.
1205 if((cdr.Transfer[4 + 2] & 0x4) &&
1206 (cdr.Transfer[4 + 1] == cdr.Channel) &&
1207 (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
1208 int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1210 cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
1213 * This is a hack for Megaman X4, Castlevania etc...
1214 * that regressed from the new m_locationChanged and CDROM timings changes.
1215 * It is mostly noticeable in Castevania however and the stuttering can be very jarring.
1217 * According to PCSX redux authors, we shouldn't cause a location change if
1218 * the sector difference is too small.
1219 * I attempted to go with that approach but came empty handed.
1220 * So for now, let's just set cdr.m_locationChanged to false when playing back any ADPCM samples.
1221 * This does not regress Crash Team Racing's intro at least.
1223 cdr.m_locationChanged = FALSE;
1224 SPU_playADPCMchannel(&cdr.Xa);
1225 cdr.FirstSector = 0;
1227 else cdr.FirstSector = -1;
1231 cdr.SetSectorPlay[2]++;
1232 if (cdr.SetSectorPlay[2] == 75) {
1233 cdr.SetSectorPlay[2] = 0;
1234 cdr.SetSectorPlay[1]++;
1235 if (cdr.SetSectorPlay[1] == 60) {
1236 cdr.SetSectorPlay[1] = 0;
1237 cdr.SetSectorPlay[0]++;
1243 uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
1244 if (cdr.m_locationChanged) {
1245 CDREAD_INT(delay * 30);
1246 cdr.m_locationChanged = FALSE;
1252 Croc 2: $40 - only FORM1 (*)
1253 Judge Dredd: $C8 - only FORM1 (*)
1254 Sim Theme Park - no adpcm at all (zero)
1257 if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
1258 cdr.Stat = DataReady;
1262 // update for CdlGetlocP
1263 ReadTrack(cdr.SetSectorPlay);
1272 bit 5 - 1 result ready
1274 bit 7 - 1 command being processed
1277 unsigned char cdrRead0(void) {
1278 if (cdr.ResultReady)
1286 // cdr.Ctrl &= ~0x40;
1288 // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1291 CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
1293 return psxHu8(0x1800) = cdr.Ctrl;
1296 void cdrWrite0(unsigned char rt) {
1297 CDR_LOG_IO("cdr w0: %02x\n", rt);
1299 cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
1302 unsigned char cdrRead1(void) {
1303 if ((cdr.ResultP & 0xf) < cdr.ResultC)
1304 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1308 if (cdr.ResultP == cdr.ResultC)
1309 cdr.ResultReady = 0;
1311 CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
1313 return psxHu8(0x1801);
1316 void cdrWrite1(unsigned char rt) {
1317 CDR_LOG_IO("cdr w1: %02x\n", rt);
1319 switch (cdr.Ctrl & 3) {
1323 cdr.AttenuatorRightToRightT = rt;
1332 #ifdef CDR_LOG_CMD_IRQ
1333 SysPrintf("CD1 write: %x (%s)", rt, CmdName[rt]);
1335 SysPrintf(" Param[%d] = {", cdr.ParamC);
1336 for (i = 0; i < cdr.ParamC; i++)
1337 SysPrintf(" %x,", cdr.Param[i]);
1344 cdr.ResultReady = 0;
1346 // cdr.Stat = NoIntr;
1347 AddIrqQueue(cdr.Cmd, 0x800);
1359 cdr.Seeked = SEEK_DONE;
1365 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1367 cdr.Mode = cdr.Param[0];
1369 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1370 // - fixes choppy movie sound
1371 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1377 unsigned char cdrRead2(void) {
1380 if (cdr.Readed == 0) {
1386 CDR_LOG_IO("cdr r2: %02x\n", ret);
1390 void cdrWrite2(unsigned char rt) {
1391 CDR_LOG_IO("cdr w2: %02x\n", rt);
1393 switch (cdr.Ctrl & 3) {
1395 if (cdr.ParamC < 8) // FIXME: size and wrapping
1396 cdr.Param[cdr.ParamC++] = rt;
1403 cdr.AttenuatorLeftToLeftT = rt;
1406 cdr.AttenuatorRightToLeftT = rt;
1411 unsigned char cdrRead3(void) {
1413 psxHu8(0x1803) = cdr.Stat | 0xE0;
1415 psxHu8(0x1803) = cdr.Reg2 | 0xE0;
1417 CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
1418 return psxHu8(0x1803);
1421 void cdrWrite3(unsigned char rt) {
1422 CDR_LOG_IO("cdr w3: %02x\n", rt);
1424 switch (cdr.Ctrl & 3) {
1434 cdr.AttenuatorLeftToRightT = rt;
1438 memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
1439 CDR_LOG_I("CD-XA Volume: %02x %02x | %02x %02x\n",
1440 cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
1441 cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
1446 if ((rt & 0x80) && cdr.Readed == 0) {
1448 pTransfer = cdr.Transfer;
1450 switch (cdr.Mode & 0x30) {
1451 case MODE_SIZE_2328:
1456 case MODE_SIZE_2340:
1466 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1471 CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1476 if (cdr.Readed == 0) {
1477 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1481 cdsize = (bcr & 0xffff) * 4;
1483 // Ape Escape: bcr = 0001 / 0000
1487 switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
1488 case MODE_SIZE_2340: cdsize = 2340; break;
1489 case MODE_SIZE_2328: cdsize = 2328; break;
1491 case MODE_SIZE_2048: cdsize = 2048; break;
1496 ptr = (u8 *)PSXM(madr);
1498 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1503 GS CDX: Enhancement CD crash
1506 - Spams DMA3 and gets buffer overrun
1508 size = CD_FRAMESIZE_RAW - (pTransfer - cdr.Transfer);
1513 memcpy(ptr, pTransfer, size);
1516 psxCpu->Clear(madr, cdsize / 4);
1517 pTransfer += cdsize;
1519 if( chcr == 0x11400100 ) {
1520 HW_DMA3_MADR = SWAPu32(madr + cdsize);
1521 CDRDMA_INT( (cdsize/4) / 4 );
1523 else if( chcr == 0x11000000 ) {
1524 // CDRDMA_INT( (cdsize/4) * 1 );
1526 psxRegs.cycle += (cdsize/4) * 24/2;
1532 CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
1536 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1540 void cdrDmaInterrupt()
1542 if (HW_DMA3_CHCR & SWAP32(0x01000000))
1544 HW_DMA3_CHCR &= SWAP32(~0x01000000);
1549 static void getCdInfo(void)
1553 CDR_getTN(cdr.ResultTN);
1554 CDR_getTD(0, cdr.SetSectorEnd);
1555 tmp = cdr.SetSectorEnd[0];
1556 cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
1557 cdr.SetSectorEnd[2] = tmp;
1561 memset(&cdr, 0, sizeof(cdr));
1567 cdr.DriveState = DRIVESTATE_STANDBY;
1568 cdr.StatP = STATUS_ROTATING;
1569 pTransfer = cdr.Transfer;
1570 cdr.SetlocPending = 0;
1571 cdr.m_locationChanged = FALSE;
1573 // BIOS player - default values
1574 cdr.AttenuatorLeftToLeft = 0x80;
1575 cdr.AttenuatorLeftToRight = 0x00;
1576 cdr.AttenuatorRightToLeft = 0x00;
1577 cdr.AttenuatorRightToRight = 0x80;
1582 int cdrFreeze(void *f, int Mode) {
1586 if (Mode == 0 && !Config.Cdda)
1589 cdr.freeze_ver = 0x63647202;
1590 gzfreeze(&cdr, sizeof(cdr));
1593 cdr.ParamP = cdr.ParamC;
1594 tmp = pTransfer - cdr.Transfer;
1597 gzfreeze(&tmp, sizeof(tmp));
1602 pTransfer = cdr.Transfer + tmp;
1604 // read right sub data
1605 tmpp[0] = btoi(cdr.Prev[0]);
1606 tmpp[1] = btoi(cdr.Prev[1]);
1607 tmpp[2] = btoi(cdr.Prev[2]);
1612 if (cdr.freeze_ver < 0x63647202)
1613 memcpy(cdr.SetSectorPlay, cdr.SetSector, 3);
1615 Find_CurTrack(cdr.SetSectorPlay);
1620 if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
1621 // old versions did not latch Reg2, have to fixup..
1622 if (cdr.Reg2 == 0) {
1623 SysPrintf("cdrom: fixing up old savestate\n");
1626 // also did not save Attenuator..
1627 if ((cdr.AttenuatorLeftToLeft | cdr.AttenuatorLeftToRight
1628 | cdr.AttenuatorRightToLeft | cdr.AttenuatorRightToRight) == 0)
1630 cdr.AttenuatorLeftToLeft = cdr.AttenuatorRightToRight = 0x80;
1638 void LidInterrupt() {
1641 cdrLidSeekInterrupt();