libpcsxcore/cdrom.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team              *
   3  *                                                                         *
   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.                                   *
   8  *                                                                         *
   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.                          *
  13  *                                                                         *
  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 02111-1307 USA.           *
  18  ***************************************************************************/
  19
  20 /*
  21 * Handles all CD-ROM registers and functions.
  22 */
  23
  24 #include "cdrom.h"
  25 #include "ppf.h"
  26 #include "psxdma.h"
  27
  28 cdrStruct cdr;
  29
  30 /* CD-ROM magic numbers */
  31 #define CdlSync        0
  32 #define CdlNop         1
  33 #define CdlSetloc      2
  34 #define CdlPlay        3
  35 #define CdlForward     4
  36 #define CdlBackward    5
  37 #define CdlReadN       6
  38 #define CdlStandby     7
  39 #define CdlStop        8
  40 #define CdlPause       9
  41 #define CdlInit        10
  42 #define CdlMute        11
  43 #define CdlDemute      12
  44 #define CdlSetfilter   13
  45 #define CdlSetmode     14
  46 #define CdlGetmode     15
  47 #define CdlGetlocL     16
  48 #define CdlGetlocP     17
  49 #define CdlReadT       18
  50 #define CdlGetTN       19
  51 #define CdlGetTD       20
  52 #define CdlSeekL       21
  53 #define CdlSeekP       22
  54 #define CdlSetclock    23
  55 #define CdlGetclock    24
  56 #define CdlTest        25
  57 #define CdlID          26
  58 #define CdlReadS       27
  59 #define CdlReset       28
  60 #define CdlReadToc     30
  61
  62 #define AUTOPAUSE      249
  63 #define READ_ACK       250
  64 #define READ           251
  65 #define REPPLAY_ACK    252
  66 #define REPPLAY        253
  67 #define ASYNC          254
  68 /* don't set 255, it's reserved */
  69
  70 char *CmdName[0x100]= {
  71     "CdlSync",     "CdlNop",       "CdlSetloc",  "CdlPlay",
  72     "CdlForward",  "CdlBackward",  "CdlReadN",   "CdlStandby",
  73     "CdlStop",     "CdlPause",     "CdlInit",    "CdlMute",
  74     "CdlDemute",   "CdlSetfilter", "CdlSetmode", "CdlGetmode",
  75     "CdlGetlocL",  "CdlGetlocP",   "CdlReadT",   "CdlGetTN",
  76     "CdlGetTD",    "CdlSeekL",     "CdlSeekP",   "CdlSetclock",
  77     "CdlGetclock", "CdlTest",      "CdlID",      "CdlReadS",
  78     "CdlReset",    NULL,           "CDlReadToc", NULL
  79 };
  80
  81 unsigned char Test04[] = { 0 };
  82 unsigned char Test05[] = { 0 };
  83 unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
  84 unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
  85 unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
  86
  87 // cdr.Stat:
  88 #define NoIntr          0
  89 #define DataReady       1
  90 #define Complete        2
  91 #define Acknowledge     3
  92 #define DataEnd         4
  93 #define DiskError       5
  94
  95 /* Modes flags */
  96 #define MODE_SPEED       (1<<7) // 0x80
  97 #define MODE_STRSND      (1<<6) // 0x40 ADPCM on/off
  98 #define MODE_SIZE_2340   (1<<5) // 0x20
  99 #define MODE_SIZE_2328   (1<<4) // 0x10
 100 #define MODE_SF          (1<<3) // 0x08 channel on/off
 101 #define MODE_REPORT      (1<<2) // 0x04
 102 #define MODE_AUTOPAUSE   (1<<1) // 0x02
 103 #define MODE_CDDA        (1<<0) // 0x01
 104
 105 /* Status flags */
 106 #define STATUS_PLAY      (1<<7) // 0x80
 107 #define STATUS_SEEK      (1<<6) // 0x40
 108 #define STATUS_READ      (1<<5) // 0x20
 109 #define STATUS_SHELLOPEN (1<<4) // 0x10
 110 #define STATUS_UNKNOWN3  (1<<3) // 0x08
 111 #define STATUS_UNKNOWN2  (1<<2) // 0x04
 112 #define STATUS_ROTATING  (1<<1) // 0x02
 113 #define STATUS_ERROR     (1<<0) // 0x01
 114
 115
 116
 117 // 1x = 75 sectors per second
 118 // PSXCLK = 1 sec in the ps
 119 // so (PSXCLK / 75) = cdr read time (linuzappz)
 120 #define cdReadTime (PSXCLK / 75)
 121
 122 static struct CdrStat stat;
 123
 124 static unsigned int msf2sec(char *msf) {
 125         return ((msf[0] * 60 + msf[1]) * 75) + msf[2];
 126 }
 127
 128 static void sec2msf(unsigned int s, char *msf) {
 129         msf[0] = s / 75 / 60;
 130         s = s - msf[0] * 75 * 60;
 131         msf[1] = s / 75;
 132         s = s - msf[1] * 75;
 133         msf[2] = s;
 134 }
 135
 136
 137 #define CDR_INT(eCycle) { \
 138         psxRegs.interrupt |= (1 << PSXINT_CDR); \
 139         psxRegs.intCycle[PSXINT_CDR].cycle = eCycle; \
 140         psxRegs.intCycle[PSXINT_CDR].sCycle = psxRegs.cycle; \
 141         new_dyna_set_event(PSXINT_CDR, eCycle); \
 142 }
 143
 144 #define CDREAD_INT(eCycle) { \
 145         psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
 146         psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
 147         psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
 148         new_dyna_set_event(PSXINT_CDREAD, eCycle); \
 149 }
 150
 151 #define CDRLID_INT(eCycle) { \
 152         psxRegs.interrupt |= (1 << PSXINT_CDRLID); \
 153         psxRegs.intCycle[PSXINT_CDRLID].cycle = eCycle; \
 154         psxRegs.intCycle[PSXINT_CDRLID].sCycle = psxRegs.cycle; \
 155         new_dyna_set_event(PSXINT_CDRLID, eCycle); \
 156 }
 157
 158 #define CDRPLAY_INT(eCycle) { \
 159         psxRegs.interrupt |= (1 << PSXINT_CDRPLAY); \
 160         psxRegs.intCycle[PSXINT_CDRPLAY].cycle = eCycle; \
 161         psxRegs.intCycle[PSXINT_CDRPLAY].sCycle = psxRegs.cycle; \
 162         new_dyna_set_event(PSXINT_CDRPLAY, eCycle); \
 163 }
 164
 165 #define StartReading(type, eCycle) { \
 166         cdr.Reading = type; \
 167         cdr.FirstSector = 1; \
 168         cdr.Readed = 0xff; \
 169         AddIrqQueue(READ_ACK, eCycle); \
 170 }
 171
 172 #define StopReading() { \
 173         if (cdr.Reading) { \
 174                 cdr.Reading = 0; \
 175                 psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
 176         } \
 177         cdr.StatP &= ~STATUS_READ;\
 178 }
 179
 180 #define StopCdda() { \
 181         if (cdr.Play) { \
 182                 if (!Config.Cdda) CDR_stop(); \
 183                 cdr.StatP &= ~STATUS_PLAY; \
 184                 cdr.Play = FALSE; \
 185                 cdr.FastForward = 0; \
 186                 cdr.FastBackward = 0; \
 187                 /*SPU_registerCallback( SPUirq );*/ \
 188         } \
 189 }
 190
 191 #define SetResultSize(size) { \
 192     cdr.ResultP = 0; \
 193         cdr.ResultC = size; \
 194         cdr.ResultReady = 1; \
 195 }
 196
 197
 198 void cdrLidSeekInterrupt()
 199 {
 200         // turn back on checking
 201         if( cdr.LidCheck == 0x10 )
 202         {
 203                 cdr.LidCheck = 0;
 204         }
 205
 206         // official lid close
 207         else if( cdr.LidCheck == 0x30 )
 208         {
 209                 // GS CDX 3.3: $13
 210                 cdr.StatP |= STATUS_ROTATING;
 211
 212
 213                 // GS CDX 3.3 - ~50 getlocp tries
 214                 CDRLID_INT( cdReadTime * 3 );
 215                 cdr.LidCheck = 0x40;
 216         }
 217
 218         // turn off ready
 219         else if( cdr.LidCheck == 0x40 )
 220         {
 221                 // GS CDX 3.3: $01
 222                 cdr.StatP &= ~STATUS_SHELLOPEN;
 223                 cdr.StatP &= ~STATUS_ROTATING;
 224
 225
 226                 // GS CDX 3.3 - ~50 getlocp tries
 227                 CDRLID_INT( cdReadTime * 3 );
 228                 cdr.LidCheck = 0x50;
 229         }
 230
 231         // now seek
 232         else if( cdr.LidCheck == 0x50 )
 233         {
 234                 // GameShark Lite: Start seeking ($42)
 235                 cdr.StatP |= STATUS_SEEK;
 236                 cdr.StatP |= STATUS_ROTATING;
 237                 cdr.StatP &= ~STATUS_ERROR;
 238
 239
 240                 CDRLID_INT( cdReadTime * 3 );
 241                 cdr.LidCheck = 0x60;
 242         }
 243
 244         // done = cd ready
 245         else if( cdr.LidCheck == 0x60 )
 246         {
 247                 // GameShark Lite: Seek detection done ($02)
 248                 cdr.StatP &= ~STATUS_SEEK;
 249
 250                 cdr.LidCheck = 0;
 251         }
 252 }
 253
 254
 255 static void Check_Shell( int Irq )
 256 {
 257         // check case open/close
 258         if (cdr.LidCheck > 0)
 259         {
 260 #ifdef CDR_LOG
 261                 CDR_LOG( "LidCheck\n" );
 262 #endif
 263
 264                 // $20 = check lid state
 265                 if( cdr.LidCheck == 0x20 )
 266                 {
 267                         u32 i;
 268
 269                         i = stat.Status;
 270                         if (CDR_getStatus(&stat) != -1)
 271                         {
 272                                 // BIOS hangs + BIOS error messages
 273                                 //if (stat.Type == 0xff)
 274                                         //cdr.Stat = DiskError;
 275
 276                                 // case now open
 277                                 if (stat.Status & STATUS_SHELLOPEN)
 278                                 {
 279                                         // Vib Ribbon: pre-CD swap
 280                                         StopCdda();
 281
 282
 283                                         // GameShark Lite: Death if DiskError happens
 284                                         //
 285                                         // Vib Ribbon: Needs DiskError for CD swap
 286
 287                                         if (Irq != CdlNop)
 288                                         {
 289                                                 cdr.Stat = DiskError;
 290
 291                                                 cdr.StatP |= STATUS_ERROR;
 292                                                 cdr.Result[0] |= STATUS_ERROR;
 293                                         }
 294
 295                                         // GameShark Lite: Wants -exactly- $10
 296                                         cdr.StatP |= STATUS_SHELLOPEN;
 297                                         cdr.StatP &= ~STATUS_ROTATING;
 298
 299
 300                                         CDRLID_INT( cdReadTime * 3 );
 301                                         cdr.LidCheck = 0x10;
 302
 303
 304                                         // GS CDX 3.3 = $11
 305                                 }
 306
 307                                 // case just closed
 308                                 else if ( i & STATUS_SHELLOPEN )
 309                                 {
 310                                         cdr.StatP |= STATUS_ROTATING;
 311
 312                                         CheckCdrom();
 313
 314
 315                                         if( cdr.Stat == NoIntr )
 316                                                 cdr.Stat = Acknowledge;
 317
 318                                         psxHu32ref(0x1070) |= SWAP32((u32)0x4);
 319
 320
 321                                         // begin close-seek-ready cycle
 322                                         CDRLID_INT( cdReadTime * 3 );
 323                                         cdr.LidCheck = 0x30;
 324
 325
 326                                         // GameShark Lite: Wants -exactly- $42, then $02
 327                                         // GS CDX 3.3: Wants $11/$80, $13/$80, $01/$00
 328                                 }
 329
 330                                 // case still closed - wait for recheck
 331                                 else
 332                                 {
 333                                         CDRLID_INT( cdReadTime * 3 );
 334                                         cdr.LidCheck = 0x10;
 335                                 }
 336                         }
 337                 }
 338
 339
 340                 // GS CDX: clear all values but #1,#2
 341                 if( (cdr.LidCheck >= 0x30) || (cdr.StatP & STATUS_SHELLOPEN) )
 342                 {
 343                         SetResultSize(16);
 344                         memset( cdr.Result, 0, 16 );
 345
 346                         cdr.Result[0] = cdr.StatP;
 347
 348
 349                         // GS CDX: special return value
 350                         if( cdr.StatP & STATUS_SHELLOPEN )
 351                         {
 352                                 cdr.Result[1] = 0x80;
 353                         }
 354
 355
 356                         if( cdr.Stat == NoIntr )
 357                                 cdr.Stat = Acknowledge;
 358
 359                         psxHu32ref(0x1070) |= SWAP32((u32)0x4);
 360                 }
 361         }
 362 }
 363
 364
 365 void Find_CurTrack() {
 366         cdr.CurTrack = 0;
 367
 368         if (CDR_getTN(cdr.ResultTN) != -1) {
 369                 int lcv;
 370
 371                 for( lcv = 1; lcv <= cdr.ResultTN[1]; lcv++ ) {
 372                         if (CDR_getTD((u8)(lcv), cdr.ResultTD) != -1) {
 373                                 u32 sect1, sect2;
 374
 375 #ifdef CDR_LOG___0
 376                                 CDR_LOG( "curtrack %d %d %d | %d %d %d | %d\n",
 377                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2],
 378                                         cdr.ResultTD[2], cdr.ResultTD[1], cdr.ResultTD[0],
 379                                         cdr.CurTrack );
 380 #endif
 381
 382                                 // find next track boundary - only need m:s accuracy
 383                                 sect1 = cdr.SetSectorPlay[0] * 60 * 75 + cdr.SetSectorPlay[1] * 75;
 384                                 sect2 = cdr.ResultTD[2] * 60 * 75 + cdr.ResultTD[1] * 75;
 385
 386                                 // Twisted Metal 4 - psx cdda pregap (2-sec)
 387                                 // - fix in-game music
 388                                 sect2 -= 75 * 2;
 389
 390                                 if( sect1 >= sect2 ) {
 391                                         cdr.CurTrack++;
 392                                         continue;
 393                                 }
 394                         }
 395
 396                         break;
 397                 }
 398         }
 399 }
 400
 401 static void ReadTrack( u8 *time ) {
 402         cdr.Prev[0] = itob( time[0] );
 403         cdr.Prev[1] = itob( time[1] );
 404         cdr.Prev[2] = itob( time[2] );
 405
 406 #ifdef CDR_LOG
 407         CDR_LOG("ReadTrack() Log: KEY *** %x:%x:%x\n", cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
 408 #endif
 409         cdr.RErr = CDR_readTrack(cdr.Prev);
 410 }
 411
 412
 413 void AddIrqQueue(unsigned char irq, unsigned long ecycle) {
 414         cdr.Irq = irq;
 415         cdr.eCycle = ecycle;
 416
 417         // Doom: Force rescheduling
 418         // - Fixes boot
 419         CDR_INT(ecycle);
 420 }
 421
 422
 423 void Set_Track()
 424 {
 425         if (CDR_getTN(cdr.ResultTN) != -1) {
 426                 int lcv;
 427
 428                 for( lcv = 1; lcv < cdr.ResultTN[1]; lcv++ ) {
 429                         if (CDR_getTD((u8)(lcv), cdr.ResultTD) != -1) {
 430 #ifdef CDR_LOG___0
 431                                 CDR_LOG( "settrack %d %d %d | %d %d %d | %d\n",
 432                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2],
 433                                         cdr.ResultTD[2], cdr.ResultTD[1], cdr.ResultTD[0],
 434                                         cdr.CurTrack );
 435 #endif
 436
 437                                 // check if time matches track start (only need min, sec accuracy)
 438                                 // - m:s:f vs f:s:m
 439                                 if( cdr.SetSectorPlay[0] == cdr.ResultTD[2] &&
 440                                                 cdr.SetSectorPlay[1] == cdr.ResultTD[1] ) {
 441                                         // skip pregap frames
 442                                         if( cdr.SetSectorPlay[2] < cdr.ResultTD[0] )
 443                                                 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 444
 445                                         break;
 446                                 }
 447                                 else if( cdr.SetSectorPlay[0] < cdr.ResultTD[2] )
 448                                         break;
 449                         }
 450                 }
 451         }
 452 }
 453
 454
 455 static u8 fake_subq_local[3], fake_subq_real[3], fake_subq_index, fake_subq_change;
 456 static void Create_Fake_Subq()
 457 {
 458         u8 temp_cur[3], temp_next[3], temp_start[3], pregap;
 459         int diff;
 460
 461         if (CDR_getTN(cdr.ResultTN) == -1) return;
 462         if( cdr.CurTrack+1 <= cdr.ResultTN[1] ) {
 463                 pregap = 150;
 464                 if( CDR_getTD(cdr.CurTrack+1, cdr.ResultTD) == -1 ) return;
 465         } else {
 466                 // last track - cd size
 467                 pregap = 0;
 468                 if( CDR_getTD(0, cdr.ResultTD) == -1 ) return;
 469         }
 470
 471         if( cdr.Play == TRUE ) {
 472                 temp_cur[0] = cdr.SetSectorPlay[0];
 473                 temp_cur[1] = cdr.SetSectorPlay[1];
 474                 temp_cur[2] = cdr.SetSectorPlay[2];
 475         } else {
 476                 temp_cur[0] = btoi( cdr.Prev[0] );
 477                 temp_cur[1] = btoi( cdr.Prev[1] );
 478                 temp_cur[2] = btoi( cdr.Prev[2] );
 479         }
 480
 481         fake_subq_real[0] = temp_cur[0];
 482         fake_subq_real[1] = temp_cur[1];
 483         fake_subq_real[2] = temp_cur[2];
 484
 485         temp_next[0] = cdr.ResultTD[2];
 486         temp_next[1] = cdr.ResultTD[1];
 487         temp_next[2] = cdr.ResultTD[0];
 488
 489
 490         // flag- next track
 491         if( msf2sec(temp_cur) >= msf2sec( temp_next )-pregap ) {
 492                 fake_subq_change = 1;
 493
 494                 cdr.CurTrack++;
 495
 496                 // end cd
 497                 if( pregap == 0 ) StopCdda();
 498         }
 499
 500         //////////////////////////////////////////////////
 501         //////////////////////////////////////////////////
 502
 503         // repair
 504         if( cdr.CurTrack <= cdr.ResultTN[1] ) {
 505                 if( CDR_getTD(cdr.CurTrack, cdr.ResultTD) == -1 ) return;
 506         } else {
 507                 // last track - cd size
 508                 if( CDR_getTD(0, cdr.ResultTD) == -1 ) return;
 509         }
 510
 511         temp_start[0] = cdr.ResultTD[2];
 512         temp_start[1] = cdr.ResultTD[1];
 513         temp_start[2] = cdr.ResultTD[0];
 514
 515
 516 #ifdef CDR_LOG
 517         CDR_LOG( "CDDA FAKE SUB - %d:%d:%d / %d:%d:%d / %d:%d:%d\n",
 518                 temp_cur[0], temp_cur[1], temp_cur[2],
 519                 temp_start[0], temp_start[1], temp_start[2],
 520                 temp_next[0], temp_next[1], temp_next[2]);
 521 #endif
 522
 523
 524
 525         // local time - pregap / real
 526         diff = msf2sec(temp_cur) - msf2sec( temp_start );
 527         if( diff < 0 ) {
 528                 fake_subq_index = 0;
 529
 530                 sec2msf( -diff, fake_subq_local );
 531         } else {
 532                 fake_subq_index = 1;
 533
 534                 sec2msf( diff, fake_subq_local );
 535         }
 536 }
 537
 538
 539 static void cdrPlayInterrupt_Autopause()
 540 {
 541         struct SubQ *subq = (struct SubQ *)CDR_getBufferSub();
 542         if (subq != NULL ) {
 543 #ifdef CDR_LOG
 544                 CDR_LOG( "CDDA SUB - %X:%X:%X\n",
 545                         subq->AbsoluteAddress[0], subq->AbsoluteAddress[1], subq->AbsoluteAddress[2] );
 546 #endif
 547
 548                 /*
 549                 CDDA Autopause
 550
 551                 Silhouette Mirage ($3)
 552                 Tomb Raider 1 ($7)
 553                 */
 554
 555                 if( cdr.CurTrack >= btoi( subq->TrackNumber ) )
 556                         return;
 557         } else {
 558                 Create_Fake_Subq();
 559 #ifdef CDR_LOG___0
 560                 CDR_LOG( "CDDA FAKE SUB - %d:%d:%d\n",
 561                         fake_subq_real[0], fake_subq_real[1], fake_subq_real[2] );
 562 #endif
 563
 564                 if( !fake_subq_change )
 565                         return;
 566
 567                 fake_subq_change = 0;
 568         }
 569
 570         if (cdr.Mode & MODE_AUTOPAUSE) {
 571 #ifdef CDR_LOG
 572                 CDR_LOG( "CDDA STOP\n" );
 573 #endif
 574
 575                 // Magic the Gathering
 576                 // - looping territory cdda
 577
 578                 // ...?
 579                 //cdr.ResultReady = 1;
 580                 //cdr.Stat = DataReady;
 581                 cdr.Stat = DataEnd;
 582                 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
 583
 584                 StopCdda();
 585         }
 586         if (cdr.Mode & MODE_REPORT) {
 587                 // rearmed note: PCSX-Reloaded does this for every sector,
 588                 // but we try to get away with only track change here.
 589                 memset( cdr.Result, 0, 8 );
 590                 cdr.Result[0] |= 0x10;
 591
 592                 if (subq != NULL) {
 593 #ifdef CDR_LOG
 594                         CDR_LOG( "REPPLAY SUB - %X:%X:%X\n",
 595                                 subq->AbsoluteAddress[0], subq->AbsoluteAddress[1], subq->AbsoluteAddress[2] );
 596 #endif
 597                         cdr.CurTrack = btoi( subq->TrackNumber );
 598
 599                         // BIOS CD Player: data already BCD format
 600                         cdr.Result[1] = subq->TrackNumber;
 601                         cdr.Result[2] = subq->IndexNumber;
 602
 603                         cdr.Result[3] = subq->AbsoluteAddress[0];
 604                         cdr.Result[4] = subq->AbsoluteAddress[1];
 605                         cdr.Result[5] = subq->AbsoluteAddress[2];
 606                 } else {
 607 #ifdef CDR_LOG___0
 608                         CDR_LOG( "REPPLAY FAKE - %d:%d:%d\n",
 609                                 fake_subq_real[0], fake_subq_real[1], fake_subq_real[2] );
 610 #endif
 611
 612                         // track # / index #
 613                         cdr.Result[1] = itob(cdr.CurTrack);
 614                         cdr.Result[2] = itob(fake_subq_index);
 615                         // absolute
 616                         cdr.Result[3] = itob( fake_subq_real[0] );
 617                         cdr.Result[4] = itob( fake_subq_real[1] );
 618                         cdr.Result[5] = itob( fake_subq_real[2] );
 619                 }
 620
 621                 // Rayman: Logo freeze (resultready + dataready)
 622                 cdr.ResultReady = 1;
 623                 cdr.Stat = DataReady;
 624
 625                 SetResultSize(8);
 626                 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
 627         }
 628 }
 629
 630 void cdrPlayInterrupt()
 631 {
 632         if( !cdr.Play ) return;
 633
 634 #ifdef CDR_LOG
 635         CDR_LOG( "CDDA - %d:%d:%d\n",
 636                 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
 637 #endif
 638         CDRPLAY_INT( cdReadTime );
 639
 640         if (!cdr.Irq && !cdr.Stat && (cdr.Mode & MODE_CDDA) && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
 641                 cdrPlayInterrupt_Autopause();
 642
 643         cdr.SetSectorPlay[2]++;
 644         if (cdr.SetSectorPlay[2] == 75) {
 645                 cdr.SetSectorPlay[2] = 0;
 646                 cdr.SetSectorPlay[1]++;
 647                 if (cdr.SetSectorPlay[1] == 60) {
 648                         cdr.SetSectorPlay[1] = 0;
 649                         cdr.SetSectorPlay[0]++;
 650                 }
 651         }
 652
 653         //Check_Shell(0);
 654 }
 655
 656 void cdrInterrupt() {
 657         int i;
 658         unsigned char Irq = cdr.Irq;
 659         struct SubQ *subq;
 660
 661         // Reschedule IRQ
 662         if (cdr.Stat) {
 663                 CDR_INT( 0x100 );
 664                 return;
 665         }
 666
 667         cdr.Irq = 0xff;
 668         cdr.Ctrl &= ~0x80;
 669
 670         switch (Irq) {
 671                 case CdlSync:
 672                         SetResultSize(1);
 673                         cdr.StatP |= STATUS_ROTATING;
 674                         cdr.Result[0] = cdr.StatP;
 675                         cdr.Stat = Acknowledge;
 676                         break;
 677
 678                 case CdlNop:
 679                         SetResultSize(1);
 680                         cdr.Result[0] = cdr.StatP;
 681                         cdr.Stat = Acknowledge;
 682
 683                         if (cdr.LidCheck == 0) cdr.LidCheck = 0x20;
 684                         break;
 685
 686                 case CdlSetloc:
 687                         cdr.CmdProcess = 0;
 688                         SetResultSize(1);
 689                         cdr.StatP |= STATUS_ROTATING;
 690                         cdr.Result[0] = cdr.StatP;
 691                         cdr.Stat = Acknowledge;
 692                         break;
 693
 694                 case CdlPlay:
 695                         fake_subq_change = 0;
 696
 697                         if( cdr.Seeked == FALSE ) {
 698                                 memcpy( cdr.SetSectorPlay, cdr.SetSector, 4 );
 699                                 cdr.Seeked = TRUE;
 700                         }
 701
 702                         /*
 703                         Rayman: detect track changes
 704                         - fixes logo freeze
 705
 706                         Twisted Metal 2: skip PREGAP + starting accurate SubQ
 707                         - plays tracks without retry play
 708
 709                         Wild 9: skip PREGAP + starting accurate SubQ
 710                         - plays tracks without retry play
 711                         */
 712                         Set_Track();
 713                         Find_CurTrack();
 714                         ReadTrack( cdr.SetSectorPlay );
 715
 716
 717                         // GameShark CD Player: Calls 2x + Play 2x
 718                         if( cdr.FastBackward || cdr.FastForward ) {
 719                                 if( cdr.FastForward ) cdr.FastForward--;
 720                                 if( cdr.FastBackward ) cdr.FastBackward--;
 721
 722                                 if( cdr.FastBackward == 0 && cdr.FastForward == 0 ) {
 723                                         if( cdr.Play && CDR_getStatus(&stat) != -1 ) {
 724                                                 cdr.SetSectorPlay[0] = stat.Time[0];
 725                                                 cdr.SetSectorPlay[1] = stat.Time[1];
 726                                                 cdr.SetSectorPlay[2] = stat.Time[2];
 727                                         }
 728                                 }
 729                         }
 730
 731
 732                         if (!Config.Cdda) {
 733                                 // BIOS CD Player
 734                                 // - Pause player, hit Track 01/02/../xx (Setloc issued!!)
 735
 736                                 // GameShark CD Player: Resume play
 737                                 if( cdr.ParamC == 0 ) {
 738 #ifdef CDR_LOG___0
 739                                         CDR_LOG( "PLAY Resume @ %d:%d:%d\n",
 740                                                 cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
 741 #endif
 742
 743                                         //CDR_play( cdr.SetSectorPlay );
 744                                 }
 745                                 else
 746                                 {
 747                                         // BIOS CD Player: Resume play
 748                                         if( cdr.Param[0] == 0 ) {
 749 #ifdef CDR_LOG___0
 750                                                 CDR_LOG( "PLAY Resume T0 @ %d:%d:%d\n",
 751                                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
 752 #endif
 753
 754                                                 //CDR_play( cdr.SetSectorPlay );
 755                                         }
 756                                         else {
 757 #ifdef CDR_LOG___0
 758                                                 CDR_LOG( "PLAY Resume Td @ %d:%d:%d\n",
 759                                                         cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
 760 #endif
 761
 762                                                 // BIOS CD Player: Allow track replaying
 763                                                 StopCdda();
 764
 765
 766                                                 cdr.CurTrack = btoi( cdr.Param[0] );
 767
 768                                                 if (CDR_getTN(cdr.ResultTN) != -1) {
 769                                                         // check last track
 770                                                         if (cdr.CurTrack > cdr.ResultTN[1])
 771                                                                 cdr.CurTrack = cdr.ResultTN[1];
 772
 773                                                         if (CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD) != -1) {
 774                                                                 cdr.SetSectorPlay[0] = cdr.ResultTD[2];
 775                                                                 cdr.SetSectorPlay[1] = cdr.ResultTD[1];
 776                                                                 cdr.SetSectorPlay[2] = cdr.ResultTD[0];
 777
 778                                                                 // reset data
 779                                                                 Set_Track();
 780                                                                 Find_CurTrack();
 781                                                                 ReadTrack( cdr.SetSectorPlay );
 782
 783                                                                 //CDR_play(cdr.SetSectorPlay);
 784                                                         }
 785                                                 }
 786                                         }
 787                                 }
 788                         }
 789
 790
 791                         // Vib Ribbon: gameplay checks flag
 792                         cdr.StatP &= ~STATUS_SEEK;
 793
 794
 795                         cdr.CmdProcess = 0;
 796                         SetResultSize(1);
 797                         cdr.StatP |= STATUS_ROTATING;
 798                         cdr.Result[0] = cdr.StatP;
 799                         cdr.Stat = Acknowledge;
 800
 801                         cdr.StatP |= STATUS_PLAY;
 802
 803
 804                         // BIOS player - set flag again
 805                         cdr.Play = TRUE;
 806
 807                         CDRPLAY_INT( cdReadTime );
 808                         break;
 809
 810                 case CdlForward:
 811                         cdr.CmdProcess = 0;
 812                         SetResultSize(1);
 813                         cdr.StatP |= STATUS_ROTATING;
 814                         cdr.Result[0] = cdr.StatP;
 815                         cdr.Stat = Complete;
 816
 817
 818                         // GameShark CD Player: Calls 2x + Play 2x
 819                         if( cdr.FastForward == 0 ) cdr.FastForward = 2;
 820                         else cdr.FastForward++;
 821
 822                         cdr.FastBackward = 0;
 823                         break;
 824
 825                 case CdlBackward:
 826                         cdr.CmdProcess = 0;
 827                         SetResultSize(1);
 828                         cdr.StatP |= STATUS_ROTATING;
 829                         cdr.Result[0] = cdr.StatP;
 830                         cdr.Stat = Complete;
 831
 832
 833                         // GameShark CD Player: Calls 2x + Play 2x
 834                         if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
 835                         else cdr.FastBackward++;
 836
 837                         cdr.FastForward = 0;
 838                         break;
 839
 840                 case CdlStandby:
 841                         cdr.CmdProcess = 0;
 842                         SetResultSize(1);
 843                         cdr.StatP |= STATUS_ROTATING;
 844                         cdr.Result[0] = cdr.StatP;
 845                         cdr.Stat = Complete;
 846                         break;
 847
 848                 case CdlStop:
 849                         cdr.CmdProcess = 0;
 850                         SetResultSize(1);
 851                         cdr.StatP &= ~STATUS_ROTATING;
 852                         cdr.Result[0] = cdr.StatP;
 853                         cdr.Stat = Complete;
 854 //                      cdr.Stat = Acknowledge;
 855
 856                         if (cdr.LidCheck == 0) cdr.LidCheck = 0x20;
 857                         break;
 858
 859                 case CdlPause:
 860                         SetResultSize(1);
 861                         cdr.Result[0] = cdr.StatP;
 862                         cdr.Stat = Acknowledge;
 863
 864                         AddIrqQueue(CdlPause + 0x20, 0x800);
 865                         cdr.Ctrl |= 0x80;
 866                         break;
 867
 868                 case CdlPause + 0x20:
 869                         SetResultSize(1);
 870                         cdr.StatP &= ~STATUS_READ;
 871                         cdr.StatP |= STATUS_ROTATING;
 872                         cdr.Result[0] = cdr.StatP;
 873                         cdr.Stat = Complete;
 874                         break;
 875
 876                 case CdlInit:
 877                         SetResultSize(1);
 878                         cdr.StatP = STATUS_ROTATING;
 879                         cdr.Result[0] = cdr.StatP;
 880                         cdr.Stat = Acknowledge;
 881 //                      if (!cdr.Init) {
 882                                 AddIrqQueue(CdlInit + 0x20, 0x800);
 883 //                      }
 884                 break;
 885
 886                 case CdlInit + 0x20:
 887                         SetResultSize(1);
 888                         cdr.Result[0] = cdr.StatP;
 889                         cdr.Stat = Complete;
 890                         cdr.Init = 1;
 891                         break;
 892
 893                 case CdlMute:
 894                         SetResultSize(1);
 895                         cdr.StatP |= STATUS_ROTATING;
 896                         cdr.Result[0] = cdr.StatP;
 897                         cdr.Stat = Acknowledge;
 898                         break;
 899
 900                 case CdlDemute:
 901                         SetResultSize(1);
 902                         cdr.StatP |= STATUS_ROTATING;
 903                         cdr.Result[0] = cdr.StatP;
 904                         cdr.Stat = Acknowledge;
 905                         break;
 906
 907                 case CdlSetfilter:
 908                         SetResultSize(1);
 909                         cdr.StatP |= STATUS_ROTATING;
 910                         cdr.Result[0] = cdr.StatP;
 911                         cdr.Stat = Acknowledge;
 912                         break;
 913
 914                 case CdlSetmode:
 915                         SetResultSize(1);
 916                         cdr.StatP |= STATUS_ROTATING;
 917                         cdr.Result[0] = cdr.StatP;
 918                         cdr.Stat = Acknowledge;
 919                         break;
 920
 921                 case CdlGetmode:
 922                         SetResultSize(6);
 923                         cdr.StatP |= STATUS_ROTATING;
 924                         cdr.Result[0] = cdr.StatP;
 925                         cdr.Result[1] = cdr.Mode;
 926                         cdr.Result[2] = cdr.File;
 927                         cdr.Result[3] = cdr.Channel;
 928                         cdr.Result[4] = 0;
 929                         cdr.Result[5] = 0;
 930                         cdr.Stat = Acknowledge;
 931                         break;
 932
 933                 case CdlGetlocL:
 934                         SetResultSize(8);
 935                         for (i = 0; i < 8; i++)
 936                                 cdr.Result[i] = cdr.Transfer[i];
 937                         cdr.Stat = Acknowledge;
 938                         break;
 939
 940                 case CdlGetlocP:
 941                         // GameShark CDX CD Player: uses 17 bytes output (wraps around)
 942                         SetResultSize(17);
 943                         memset( cdr.Result, 0, 16 );
 944
 945                         subq = (struct SubQ *)CDR_getBufferSub();
 946
 947                         if (subq != NULL) {
 948                                 cdr.Result[0] = subq->TrackNumber;
 949                                 cdr.Result[1] = subq->IndexNumber;
 950                                 memcpy(cdr.Result + 2, subq->TrackRelativeAddress, 3);
 951                                 memcpy(cdr.Result + 5, subq->AbsoluteAddress, 3);
 952
 953
 954                                 // subQ integrity check - data only (skip audio)
 955                                 if( subq->TrackNumber == 1 && stat.Type == 0x01 ) {
 956                                 if (calcCrc((u8 *)subq + 12, 10) != (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
 957                                         memset(cdr.Result + 2, 0, 3 + 3); // CRC wrong, wipe out time data
 958                                 }
 959                                 }
 960                         } else {
 961                                 if( cdr.Play == FALSE || !(cdr.Mode & MODE_CDDA) || !(cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)) )
 962                                         Create_Fake_Subq();
 963
 964
 965                                 // track # / index #
 966                                 cdr.Result[0] = itob(cdr.CurTrack);
 967                                 cdr.Result[1] = itob(fake_subq_index);
 968
 969                                 // local
 970                                 cdr.Result[2] = itob( fake_subq_local[0] );
 971                                 cdr.Result[3] = itob( fake_subq_local[1] );
 972                                 cdr.Result[4] = itob( fake_subq_local[2] );
 973
 974                                 // absolute
 975                                 cdr.Result[5] = itob( fake_subq_real[0] );
 976                                 cdr.Result[6] = itob( fake_subq_real[1] );
 977                                 cdr.Result[7] = itob( fake_subq_real[2] );
 978                         }
 979
 980                         // redump.org - wipe time
 981                         /*if( !cdr.Play && CheckSBI(cdr.Result+5) ) {
 982                                 memset( cdr.Result+2, 0, 6 );
 983                         }
 984                         */
 985
 986                         cdr.Stat = Acknowledge;
 987                         break;
 988
 989                 case CdlGetTN:
 990                         // 5-Star Racing: don't stop CDDA
 991                         //
 992                         // Vib Ribbon: CD swap
 993                         StopReading();
 994
 995                         cdr.CmdProcess = 0;
 996                         SetResultSize(3);
 997                         cdr.StatP |= STATUS_ROTATING;
 998                         cdr.Result[0] = cdr.StatP;
 999                         if (CDR_getTN(cdr.ResultTN) == -1) {
1000                                 cdr.Stat = DiskError;
1001                                 cdr.Result[0] |= STATUS_ERROR;
1002                         } else {
1003                                 cdr.Stat = Acknowledge;
1004                                 cdr.Result[1] = itob(cdr.ResultTN[0]);
1005                                 cdr.Result[2] = itob(cdr.ResultTN[1]);
1006                         }
1007                         break;
1008
1009                 case CdlGetTD:
1010                         cdr.CmdProcess = 0;
1011                         cdr.Track = btoi(cdr.Param[0]);
1012                         SetResultSize(4);
1013                         cdr.StatP |= STATUS_ROTATING;
1014                         if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
1015                                 cdr.Stat = DiskError;
1016                                 cdr.Result[0] |= STATUS_ERROR;
1017                         } else {
1018                                 cdr.Stat = Acknowledge;
1019                                 cdr.Result[0] = cdr.StatP;
1020                                 cdr.Result[1] = itob(cdr.ResultTD[2]);
1021                                 cdr.Result[2] = itob(cdr.ResultTD[1]);
1022                                 cdr.Result[3] = itob(cdr.ResultTD[0]);
1023                         }
1024                         break;
1025
1026                 case CdlSeekL:
1027                         SetResultSize(1);
1028                         cdr.StatP |= STATUS_ROTATING;
1029                         cdr.Result[0] = cdr.StatP;
1030                         cdr.StatP |= STATUS_SEEK;
1031                         cdr.Stat = Acknowledge;
1032
1033                         /*
1034                         Crusaders of Might and Magic = 0.5x-4x
1035                         - fix cutscene speech start
1036
1037                         Eggs of Steel = 2x-?
1038                         - fix new game
1039
1040                         Medievil = ?-4x
1041                         - fix cutscene speech
1042
1043                         Rockman X5 = 0.5-4x
1044                         - fix capcom logo
1045                         */
1046                         AddIrqQueue(CdlSeekL + 0x20, cdReadTime * 4);
1047                         break;
1048
1049                 case CdlSeekL + 0x20:
1050                         SetResultSize(1);
1051                         cdr.StatP |= STATUS_ROTATING;
1052                         cdr.StatP &= ~STATUS_SEEK;
1053                         cdr.Result[0] = cdr.StatP;
1054                         cdr.Seeked = TRUE;
1055                         cdr.Stat = Complete;
1056
1057
1058                         // Mega Man Legends 2: must update read cursor for getlocp
1059                         ReadTrack( cdr.SetSector );
1060                         break;
1061
1062                 case CdlSeekP:
1063                         SetResultSize(1);
1064                         cdr.StatP |= STATUS_ROTATING;
1065                         cdr.Result[0] = cdr.StatP;
1066                         cdr.StatP |= STATUS_SEEK;
1067                         cdr.Stat = Acknowledge;
1068                         AddIrqQueue(CdlSeekP + 0x20, cdReadTime * 1);
1069                         break;
1070
1071                 case CdlSeekP + 0x20:
1072                         SetResultSize(1);
1073                         cdr.StatP |= STATUS_ROTATING;
1074                         cdr.StatP &= ~STATUS_SEEK;
1075                         cdr.Result[0] = cdr.StatP;
1076                         cdr.Stat = Complete;
1077                         cdr.Seeked = TRUE;
1078
1079                         // GameShark Music Player
1080                         memcpy( cdr.SetSectorPlay, cdr.SetSector, 4 );
1081
1082                         // Tomb Raider 2: must update read cursor for getlocp
1083                         Find_CurTrack();
1084                         ReadTrack( cdr.SetSectorPlay );
1085                         break;
1086
1087                 case CdlTest:
1088                         cdr.Stat = Acknowledge;
1089                         switch (cdr.Param[0]) {
1090                                 case 0x20: // System Controller ROM Version
1091                                         SetResultSize(4);
1092                                         memcpy(cdr.Result, Test20, 4);
1093                                         break;
1094                                 case 0x22:
1095                                         SetResultSize(8);
1096                                         memcpy(cdr.Result, Test22, 4);
1097                                         break;
1098                                 case 0x23: case 0x24:
1099                                         SetResultSize(8);
1100                                         memcpy(cdr.Result, Test23, 4);
1101                                         break;
1102                         }
1103                         break;
1104
1105                 case CdlID:
1106                         SetResultSize(1);
1107                         cdr.StatP |= STATUS_ROTATING;
1108                         cdr.Result[0] = cdr.StatP;
1109                         cdr.Stat = Acknowledge;
1110                         AddIrqQueue(CdlID + 0x20, 0x800);
1111                         break;
1112
1113                 case CdlID + 0x20:
1114                         SetResultSize(8);
1115
1116                         if (CDR_getStatus(&stat) == -1) {
1117                                 cdr.Result[0] = 0x00; // 0x08 and cdr.Result[1]|0x10 : audio cd, enters cd player
1118                                 cdr.Result[1] = 0x80; // 0x80 leads to the menu in the bios, else loads CD
1119                         }
1120                         else {
1121                                 if (stat.Type == 2) {
1122                                         // Music CD
1123                                         cdr.Result[0] = 0x08;
1124                                         cdr.Result[1] = 0x10;
1125
1126                                         cdr.Result[1] |= 0x80;
1127                                 }
1128                                 else {
1129                                         // Data CD
1130                                         if (CdromId[0] == '\0') {
1131                                                 cdr.Result[0] = 0x00;
1132                                                 cdr.Result[1] = 0x80;
1133                                         }
1134                                         else {
1135                                                 cdr.Result[0] = 0x08;
1136                                                 cdr.Result[1] = 0x00;
1137                                         }
1138                                 }
1139                         }
1140
1141                         cdr.Result[2] = 0x00;
1142                         cdr.Result[3] = 0x00;
1143                         strncpy((char *)&cdr.Result[4], "PCSX", 4);
1144                         cdr.Stat = Complete;
1145                         break;
1146
1147                 case CdlReset:
1148                         SetResultSize(1);
1149                         cdr.StatP = STATUS_ROTATING;
1150                         cdr.Result[0] = cdr.StatP;
1151                         cdr.Stat = Acknowledge;
1152                         break;
1153
1154                 case CdlReadT:
1155                         SetResultSize(1);
1156                         cdr.StatP |= STATUS_ROTATING;
1157                         cdr.Result[0] = cdr.StatP;
1158                         cdr.Stat = Acknowledge;
1159                         AddIrqQueue(CdlReadT + 0x20, 0x800);
1160                         break;
1161
1162                 case CdlReadT + 0x20:
1163                         SetResultSize(1);
1164                         cdr.StatP |= STATUS_ROTATING;
1165                         cdr.Result[0] = cdr.StatP;
1166                         cdr.Stat = Complete;
1167                         break;
1168
1169                 case CdlReadToc:
1170                         SetResultSize(1);
1171                         cdr.StatP |= STATUS_ROTATING;
1172                         cdr.Result[0] = cdr.StatP;
1173                         cdr.Stat = Acknowledge;
1174                         AddIrqQueue(CdlReadToc + 0x20, 0x800);
1175                         break;
1176
1177                 case CdlReadToc + 0x20:
1178                         SetResultSize(1);
1179                         cdr.StatP |= STATUS_ROTATING;
1180                         cdr.Result[0] = cdr.StatP;
1181                         cdr.Stat = Complete;
1182                         break;
1183
1184                 case AUTOPAUSE:
1185                         cdr.OCUP = 0;
1186 /*                      SetResultSize(1);
1187                         StopCdda();
1188                         StopReading();
1189                         cdr.OCUP = 0;
1190                         cdr.StatP&=~0x20;
1191                         cdr.StatP|= 0x2;
1192                         cdr.Result[0] = cdr.StatP;
1193                         cdr.Stat = DataEnd;
1194 */                      AddIrqQueue(CdlPause, 0x800);
1195                         break;
1196
1197                 case READ_ACK:
1198                         if (!cdr.Reading) return;
1199
1200
1201                         // Fighting Force 2 - update subq time immediately
1202                         // - fixes new game
1203                         ReadTrack( cdr.SetSector );
1204
1205
1206                         // Crusaders of Might and Magic - update getlocl now
1207                         // - fixes cutscene speech
1208                         {
1209                                 u8 *buf = CDR_getBuffer();
1210                                 memcpy(cdr.Transfer, buf, 8);
1211                         }
1212
1213
1214                         /*
1215                         Duke Nukem: Land of the Babes - seek then delay read for one frame
1216                         - fixes cutscenes
1217                         */
1218
1219                         if (!cdr.Seeked) {
1220                                 cdr.Seeked = TRUE;
1221
1222                                 cdr.StatP |= STATUS_SEEK;
1223                                 cdr.StatP &= ~STATUS_READ;
1224
1225                                 // Crusaders of Might and Magic - use short time
1226                                 // - fix cutscene speech (startup)
1227
1228                                 // ??? - use more accurate seek time later
1229                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
1230                         } else {
1231                                 cdr.StatP |= STATUS_READ;
1232                                 cdr.StatP &= ~STATUS_SEEK;
1233
1234                                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
1235                         }
1236
1237                         SetResultSize(1);
1238                         cdr.StatP |= STATUS_ROTATING;
1239                         cdr.Result[0] = cdr.StatP;
1240                         cdr.Stat = Acknowledge;
1241                         break;
1242
1243                 case 0xff:
1244                         return;
1245
1246                 default:
1247                         cdr.Stat = Complete;
1248                         break;
1249         }
1250
1251         Check_Shell( Irq );
1252
1253         if (cdr.Stat != NoIntr && cdr.Reg2 != 0x18) {
1254                 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
1255         }
1256
1257 #ifdef CDR_LOG
1258         CDR_LOG("cdrInterrupt() Log: CDR Interrupt IRQ %x\n", Irq);
1259 #endif
1260 }
1261
1262 void cdrReadInterrupt() {
1263         u8 *buf;
1264
1265         if (!cdr.Reading)
1266                 return;
1267
1268         if (cdr.Irq || cdr.Stat) {
1269                 CDREAD_INT(0x100);
1270                 return;
1271         }
1272
1273 #ifdef CDR_LOG
1274         CDR_LOG("cdrReadInterrupt() Log: KEY END");
1275 #endif
1276
1277         cdr.OCUP = 1;
1278         SetResultSize(1);
1279         cdr.StatP |= STATUS_READ|STATUS_ROTATING;
1280         cdr.StatP &= ~STATUS_SEEK;
1281         cdr.Result[0] = cdr.StatP;
1282
1283         ReadTrack( cdr.SetSector );
1284
1285         buf = CDR_getBuffer();
1286         if (buf == NULL)
1287                 cdr.RErr = -1;
1288
1289         if (cdr.RErr == -1) {
1290 #ifdef CDR_LOG
1291                 fprintf(emuLog, "cdrReadInterrupt() Log: err\n");
1292 #endif
1293                 memset(cdr.Transfer, 0, DATA_SIZE);
1294                 cdr.Stat = DiskError;
1295                 cdr.Result[0] |= STATUS_ERROR;
1296                 CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
1297                 return;
1298         }
1299
1300         memcpy(cdr.Transfer, buf, DATA_SIZE);
1301         CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
1302
1303
1304 #ifdef CDR_LOG
1305         fprintf(emuLog, "cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
1306 #endif
1307
1308         if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
1309                 // Firemen 2: Multi-XA files - briefings, cutscenes
1310                 if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
1311                         cdr.File = cdr.Transfer[4 + 0];
1312                         cdr.Channel = cdr.Transfer[4 + 1];
1313                 }
1314
1315                 if ((cdr.Transfer[4 + 2] & 0x4) &&
1316                          (cdr.Transfer[4 + 1] == cdr.Channel) &&
1317                         (cdr.Transfer[4 + 0] == cdr.File)) {
1318                         int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
1319
1320                         if (!ret) {
1321                                 SPU_playADPCMchannel(&cdr.Xa);
1322                                 cdr.FirstSector = 0;
1323
1324
1325                                 // Crash Team Racing: music, speech
1326
1327                                 // signal ADPCM data ready
1328                                 psxHu32ref(0x1070) |= SWAP32((u32)0x200);
1329                         }
1330                         else cdr.FirstSector = -1;
1331                 }
1332         }
1333
1334         cdr.SetSector[2]++;
1335         if (cdr.SetSector[2] == 75) {
1336                 cdr.SetSector[2] = 0;
1337                 cdr.SetSector[1]++;
1338                 if (cdr.SetSector[1] == 60) {
1339                         cdr.SetSector[1] = 0;
1340                         cdr.SetSector[0]++;
1341                 }
1342         }
1343
1344         cdr.Readed = 0;
1345
1346         // G-Police: Don't autopause ADPCM even if mode set (music)
1347         if ((cdr.Transfer[4 + 2] & 0x80) && (cdr.Mode & MODE_AUTOPAUSE) &&
1348                         (cdr.Transfer[4 + 2] & 0x4) != 0x4 ) { // EOF
1349 #ifdef CDR_LOG
1350                 CDR_LOG("cdrReadInterrupt() Log: Autopausing read\n");
1351 #endif
1352 //              AddIrqQueue(AUTOPAUSE, 0x2000);
1353                 AddIrqQueue(CdlPause, 0x2000);
1354         }
1355         else {
1356                 CDREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
1357         }
1358
1359         /*
1360         Croc 2: $40 - only FORM1 (*)
1361         Judge Dredd: $C8 - only FORM1 (*)
1362         Sim Theme Park - no adpcm at all (zero)
1363         */
1364
1365         if( (cdr.Mode & MODE_STRSND) == 0 || (cdr.Transfer[4+2] & 0x4) != 0x4 ) {
1366                 cdr.Stat = DataReady;
1367         } else {
1368                 // Breath of Fire 3 - fix inn sleeping
1369                 // Rockman X5 - no music restart problem
1370                 cdr.Stat = NoIntr;
1371         }
1372         psxHu32ref(0x1070) |= SWAP32((u32)0x4);
1373
1374         Check_Shell(0);
1375 }
1376
1377 /*
1378 cdrRead0:
1379         bit 0 - 0 REG1 command send / 1 REG1 data read
1380         bit 1 - 0 data transfer finish / 1 data transfer ready/in progress
1381         bit 2 - unknown
1382         bit 3 - unknown
1383         bit 4 - unknown
1384         bit 5 - 1 result ready
1385         bit 6 - 1 dma ready
1386         bit 7 - 1 command being processed
1387 */
1388
1389 unsigned char cdrRead0(void) {
1390         if (cdr.ResultReady)
1391                 cdr.Ctrl |= 0x20;
1392         else
1393                 cdr.Ctrl &= ~0x20;
1394
1395         if (cdr.OCUP)
1396                 cdr.Ctrl |= 0x40;
1397 //  else
1398 //              cdr.Ctrl &= ~0x40;
1399
1400         // What means the 0x10 and the 0x08 bits? I only saw it used by the bios
1401         cdr.Ctrl |= 0x18;
1402
1403 #ifdef CDR_LOG
1404         CDR_LOG("cdrRead0() Log: CD0 Read: %x\n", cdr.Ctrl);
1405 #endif
1406
1407         return psxHu8(0x1800) = cdr.Ctrl;
1408 }
1409
1410 /*
1411 cdrWrite0:
1412         0 - to send a command / 1 - to get the result
1413 */
1414
1415 void cdrWrite0(unsigned char rt) {
1416 #ifdef CDR_LOG
1417         CDR_LOG("cdrWrite0() Log: CD0 write: %x\n", rt);
1418 #endif
1419         cdr.Ctrl = rt | (cdr.Ctrl & ~0x3);
1420
1421         if (rt == 0) {
1422                 cdr.ParamP = 0;
1423                 cdr.ParamC = 0;
1424                 cdr.ResultReady = 0;
1425         }
1426 }
1427
1428 unsigned char cdrRead1(void) {
1429     if (cdr.ResultReady) { // && cdr.Ctrl & 0x1) {
1430                 // GameShark CDX CD Player: uses 17 bytes output (wraps around)
1431                 psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
1432                 cdr.ResultP++;
1433                 if (cdr.ResultP == cdr.ResultC)
1434                         cdr.ResultReady = 0;
1435         } else {
1436                 psxHu8(0x1801) = 0;
1437         }
1438 #ifdef CDR_LOG
1439         CDR_LOG("cdrRead1() Log: CD1 Read: %x\n", psxHu8(0x1801));
1440 #endif
1441         return psxHu8(0x1801);
1442 }
1443
1444 void cdrWrite1(unsigned char rt) {
1445         int i;
1446
1447 #ifdef CDR_LOG
1448         CDR_LOG("cdrWrite1() Log: CD1 write: %x (%s)\n", rt, CmdName[rt]);
1449 #endif
1450
1451
1452         // Tekken: CDXA fade-out
1453         if( (cdr.Ctrl & 3) == 3 ) {
1454                 //cdr.AttenuatorRight[0] = rt;
1455         }
1456
1457
1458 //      psxHu8(0x1801) = rt;
1459         cdr.Cmd = rt;
1460         cdr.OCUP = 0;
1461
1462 #ifdef CDRCMD_DEBUG
1463         SysPrintf("cdrWrite1() Log: CD1 write: %x (%s)", rt, CmdName[rt]);
1464         if (cdr.ParamC) {
1465                 SysPrintf(" Param[%d] = {", cdr.ParamC);
1466                 for (i = 0; i < cdr.ParamC; i++)
1467                         SysPrintf(" %x,", cdr.Param[i]);
1468                 SysPrintf("}\n");
1469         } else {
1470                 SysPrintf("\n");
1471         }
1472 #endif
1473
1474         if (cdr.Ctrl & 0x1) return;
1475
1476         switch (cdr.Cmd) {
1477         case CdlSync:
1478                 cdr.Ctrl |= 0x80;
1479                 cdr.Stat = NoIntr;
1480                 AddIrqQueue(cdr.Cmd, 0x800);
1481                 break;
1482
1483         case CdlNop:
1484                 cdr.Ctrl |= 0x80;
1485                 cdr.Stat = NoIntr;
1486
1487                 // Twisted Metal 3 - fix music
1488                 AddIrqQueue(cdr.Cmd, 0x800);
1489                 break;
1490
1491         case CdlSetloc:
1492                 StopReading();
1493                 cdr.Seeked = FALSE;
1494                 for (i = 0; i < 3; i++)
1495                         cdr.SetSector[i] = btoi(cdr.Param[i]);
1496                 cdr.SetSector[3] = 0;
1497
1498                 /*
1499                    if ((cdr.SetSector[0] | cdr.SetSector[1] | cdr.SetSector[2]) == 0) {
1500                  *(u32 *)cdr.SetSector = *(u32 *)cdr.SetSectorSeek;
1501                  }*/
1502
1503                 cdr.Ctrl |= 0x80;
1504                 cdr.Stat = NoIntr;
1505                 AddIrqQueue(cdr.Cmd, 0x800);
1506                 break;
1507
1508         case CdlPlay:
1509                 // Vib Ribbon: try same track again
1510                 StopCdda();
1511
1512                 if (!cdr.SetSector[0] & !cdr.SetSector[1] & !cdr.SetSector[2]) {
1513                         if (CDR_getTN(cdr.ResultTN) != -1) {
1514                                 if (cdr.CurTrack > cdr.ResultTN[1])
1515                                         cdr.CurTrack = cdr.ResultTN[1];
1516                                 if (CDR_getTD((unsigned char)(cdr.CurTrack), cdr.ResultTD) != -1) {
1517                                         int tmp = cdr.ResultTD[2];
1518                                         cdr.ResultTD[2] = cdr.ResultTD[0];
1519                                         cdr.ResultTD[0] = tmp;
1520                                         if (!Config.Cdda) CDR_play(cdr.ResultTD);
1521                                 }
1522                         }
1523                 } else if (!Config.Cdda) {
1524                         CDR_play(cdr.SetSector);
1525                 }
1526
1527                 // Vib Ribbon - decoded buffer IRQ for CDDA reading
1528                 // - fixes ribbon timing + music CD mode
1529                 //TODO?
1530                 //CDRDBUF_INT( PSXCLK / 44100 * 0x100 );
1531
1532
1533                 cdr.Play = TRUE;
1534
1535                 cdr.StatP |= STATUS_SEEK;
1536                 cdr.StatP &= ~STATUS_ROTATING;
1537
1538                 cdr.Ctrl |= 0x80;
1539                 cdr.Stat = NoIntr;
1540                 AddIrqQueue(cdr.Cmd, 0x800);
1541                 break;
1542
1543         case CdlForward:
1544                 //if (cdr.CurTrack < 0xaa)
1545                 //      cdr.CurTrack++;
1546                 cdr.Ctrl |= 0x80;
1547                 cdr.Stat = NoIntr;
1548                 AddIrqQueue(cdr.Cmd, 0x800);
1549                 break;
1550
1551         case CdlBackward:
1552                 //if (cdr.CurTrack > 1)
1553                 //cdr.CurTrack--;
1554                 cdr.Ctrl |= 0x80;
1555                 cdr.Stat = NoIntr;
1556                 AddIrqQueue(cdr.Cmd, 0x800);
1557                 break;
1558
1559         case CdlReadN:
1560                 cdr.Irq = 0;
1561                 StopReading();
1562                 cdr.Ctrl|= 0x80;
1563                 cdr.Stat = NoIntr;
1564                 StartReading(1, 0x800);
1565                 break;
1566
1567         case CdlStandby:
1568                 StopCdda();
1569                 StopReading();
1570                 cdr.Ctrl |= 0x80;
1571                 cdr.Stat = NoIntr;
1572                 AddIrqQueue(cdr.Cmd, 0x800);
1573                 break;
1574
1575         case CdlStop:
1576                 // GameShark CD Player: Reset CDDA to track start
1577                 if( cdr.Play && CDR_getStatus(&stat) != -1 ) {
1578                         cdr.SetSectorPlay[0] = stat.Time[0];
1579                         cdr.SetSectorPlay[1] = stat.Time[1];
1580                         cdr.SetSectorPlay[2] = stat.Time[2];
1581
1582                         Find_CurTrack();
1583
1584
1585                         // grab time for current track
1586                         CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
1587
1588                         cdr.SetSectorPlay[0] = cdr.ResultTD[2];
1589                         cdr.SetSectorPlay[1] = cdr.ResultTD[1];
1590                         cdr.SetSectorPlay[2] = cdr.ResultTD[0];
1591                 }
1592
1593                 StopCdda();
1594                 StopReading();
1595
1596                 cdr.Ctrl |= 0x80;
1597                 cdr.Stat = NoIntr;
1598                 AddIrqQueue(cdr.Cmd, 0x800);
1599                 break;
1600
1601         case CdlPause:
1602                 /*
1603                    GameShark CD Player: save time for resume
1604
1605                    Twisted Metal - World Tour: don't mix Setloc / CdlPlay cursors
1606                 */
1607
1608                 StopCdda();
1609                 StopReading();
1610                 cdr.Ctrl |= 0x80;
1611                 cdr.Stat = NoIntr;
1612
1613                 /*
1614                    Gundam Battle Assault 2: much slower (*)
1615                    - Fixes boot, gameplay
1616
1617                    Hokuto no Ken 2: slower
1618                    - Fixes intro + subtitles
1619
1620                    InuYasha - Feudal Fairy Tale: slower
1621                    - Fixes battles
1622                    */
1623                 AddIrqQueue(cdr.Cmd, cdReadTime * 3);
1624                 break;
1625
1626         case CdlReset:
1627         case CdlInit:
1628                 StopCdda();
1629                 StopReading();
1630                 cdr.Ctrl |= 0x80;
1631                 cdr.Stat = NoIntr;
1632                 AddIrqQueue(cdr.Cmd, 0x800);
1633                 break;
1634
1635         case CdlMute:
1636                 cdr.Muted = TRUE;
1637                 cdr.Ctrl |= 0x80;
1638                 cdr.Stat = NoIntr;
1639                 AddIrqQueue(cdr.Cmd, 0x800);
1640
1641                         // Duke Nukem - Time to Kill
1642                         // - do not directly set cd-xa volume
1643                         //SPU_writeRegister( H_CDLeft, 0x0000 );
1644                         //SPU_writeRegister( H_CDRight, 0x0000 );
1645                 break;
1646
1647         case CdlDemute:
1648                 cdr.Muted = FALSE;
1649                 cdr.Ctrl |= 0x80;
1650                 cdr.Stat = NoIntr;
1651                 AddIrqQueue(cdr.Cmd, 0x800);
1652
1653                         // Duke Nukem - Time to Kill
1654                         // - do not directly set cd-xa volume
1655                         //SPU_writeRegister( H_CDLeft, 0x7f00 );
1656                         //SPU_writeRegister( H_CDRight, 0x7f00 );
1657                 break;
1658
1659         case CdlSetfilter:
1660                 cdr.File = cdr.Param[0];
1661                 cdr.Channel = cdr.Param[1];
1662                 cdr.Ctrl |= 0x80;
1663                 cdr.Stat = NoIntr;
1664                 AddIrqQueue(cdr.Cmd, 0x800);
1665                 break;
1666
1667         case CdlSetmode:
1668 #ifdef CDR_LOG
1669                 CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
1670 #endif
1671                 cdr.Mode = cdr.Param[0];
1672                 cdr.Ctrl |= 0x80;
1673                 cdr.Stat = NoIntr;
1674                 AddIrqQueue(cdr.Cmd, 0x800);
1675
1676                 // Squaresoft on PlayStation 1998 Collector's CD Vol. 1
1677                 // - fixes choppy movie sound
1678                 if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
1679                         StopCdda();
1680                 break;
1681
1682         case CdlGetmode:
1683                 cdr.Ctrl |= 0x80;
1684                 cdr.Stat = NoIntr;
1685                 AddIrqQueue(cdr.Cmd, 0x800);
1686                 break;
1687
1688         case CdlGetlocL:
1689                 cdr.Ctrl |= 0x80;
1690                 cdr.Stat = NoIntr;
1691
1692                 // Crusaders of Might and Magic - cutscene speech
1693                 AddIrqQueue(cdr.Cmd, 0x800);
1694                 break;
1695
1696         case CdlGetlocP:
1697                 cdr.Ctrl |= 0x80;
1698                 cdr.Stat = NoIntr;
1699
1700                 // GameShark CDX / Lite Player: pretty narrow time window
1701                 // - doesn't always work due to time inprecision
1702                 //AddIrqQueue(cdr.Cmd, 0x28);
1703
1704                 // Tomb Raider 2 - cdda
1705                 //AddIrqQueue(cdr.Cmd, 0x40);
1706
1707                 // rearmed: the above works in pcsxr-svn, but breaks here
1708                 // (TOCA world touring cars), perhaps some other code is not merged yet
1709                 AddIrqQueue(cdr.Cmd, 0x1000);
1710                 break;
1711
1712         case CdlGetTN:
1713                 cdr.Ctrl |= 0x80;
1714                 cdr.Stat = NoIntr;
1715                 //AddIrqQueue(cdr.Cmd, 0x800);
1716
1717                 // GameShark CDX CD Player: very long time
1718                 AddIrqQueue(cdr.Cmd, 0x100000);
1719                 break;
1720
1721         case CdlGetTD:
1722                 cdr.Ctrl |= 0x80;
1723                 cdr.Stat = NoIntr;
1724                 AddIrqQueue(cdr.Cmd, 0x800);
1725                 break;
1726
1727         case CdlSeekL:
1728 //                      ((u32 *)cdr.SetSectorSeek)[0] = ((u32 *)cdr.SetSector)[0];
1729                 cdr.Ctrl |= 0x80;
1730                 cdr.Stat = NoIntr;
1731                 AddIrqQueue(cdr.Cmd, 0x800);
1732
1733                 StopCdda();
1734                 StopReading();
1735
1736                 break;
1737
1738         case CdlSeekP:
1739 //              ((u32 *)cdr.SetSectorSeek)[0] = ((u32 *)cdr.SetSector)[0];
1740                 cdr.Ctrl |= 0x80;
1741                 cdr.Stat = NoIntr;
1742
1743                 // Tomb Raider 2 - reset cdda
1744                 StopCdda();
1745                 StopReading();
1746
1747                 AddIrqQueue(cdr.Cmd, 0x800);
1748                 break;
1749
1750         // Destruction Derby: read TOC? GetTD after this
1751         case CdlReadT:
1752                 cdr.Ctrl |= 0x80;
1753                 cdr.Stat = NoIntr;
1754                 AddIrqQueue(cdr.Cmd, 0x800);
1755                 break;
1756
1757         case CdlTest:
1758                 cdr.Ctrl |= 0x80;
1759                 cdr.Stat = NoIntr;
1760                 AddIrqQueue(cdr.Cmd, 0x800);
1761                 break;
1762
1763         case CdlID:
1764                 cdr.Ctrl |= 0x80;
1765                 cdr.Stat = NoIntr;
1766                 AddIrqQueue(cdr.Cmd, 0x800);
1767                 break;
1768
1769         case CdlReadS:
1770                 cdr.Irq = 0;
1771                 StopReading();
1772                 cdr.Ctrl |= 0x80;
1773                 cdr.Stat = NoIntr;
1774                 StartReading(2, 0x800);
1775                 break;
1776
1777         case CdlReadToc:
1778                 cdr.Ctrl |= 0x80;
1779                 cdr.Stat = NoIntr;
1780                 AddIrqQueue(cdr.Cmd, 0x800);
1781                 break;
1782
1783         default:
1784 #ifdef CDR_LOG
1785                 CDR_LOG("cdrWrite1() Log: Unknown command: %x\n", cdr.Cmd);
1786 #endif
1787                 return;
1788         }
1789         if (cdr.Stat != NoIntr) {
1790                 psxHu32ref(0x1070) |= SWAP32((u32)0x4);
1791         }
1792 }
1793
1794 unsigned char cdrRead2(void) {
1795         unsigned char ret;
1796
1797         if (cdr.Readed == 0) {
1798                 ret = 0;
1799         } else {
1800                 ret = *cdr.pTransfer++;
1801         }
1802
1803 #ifdef CDR_LOG
1804         CDR_LOG("cdrRead2() Log: CD2 Read: %x\n", ret);
1805 #endif
1806         return ret;
1807 }
1808
1809 void cdrWrite2(unsigned char rt) {
1810 #ifdef CDR_LOG
1811         CDR_LOG("cdrWrite2() Log: CD2 write: %x\n", rt);
1812 #endif
1813
1814         // Tekken: CDXA fade-out
1815         if( (cdr.Ctrl & 3) == 2 ) {
1816                 //cdr.AttenuatorLeft[0] = rt;
1817         }
1818         else if( (cdr.Ctrl & 3) == 3 ) {
1819                 //cdr.AttenuatorRight[1] = rt;
1820         }
1821
1822
1823         if (cdr.Ctrl & 0x1) {
1824                 switch (rt) {
1825                         case 0x07:
1826                                 cdr.ParamP = 0;
1827                                 cdr.ParamC = 0;
1828                                 cdr.ResultReady = 1; //0;
1829                                 cdr.Ctrl &= ~3; //cdr.Ctrl = 0;
1830                                 break;
1831
1832                         default:
1833                                 cdr.Reg2 = rt;
1834                                 break;
1835                 }
1836         } else if (!(cdr.Ctrl & 0x1) && cdr.ParamP < 8) {
1837                 cdr.Param[cdr.ParamP++] = rt;
1838                 cdr.ParamC++;
1839         }
1840 }
1841
1842 unsigned char cdrRead3(void) {
1843         if (cdr.Stat) {
1844                 if (cdr.Ctrl & 0x1)
1845                         psxHu8(0x1803) = cdr.Stat | 0xE0;
1846                 else
1847                         psxHu8(0x1803) = 0xff;
1848         } else {
1849                 psxHu8(0x1803) = 0;
1850         }
1851 #ifdef CDR_LOG
1852         CDR_LOG("cdrRead3() Log: CD3 Read: %x\n", psxHu8(0x1803));
1853 #endif
1854         return psxHu8(0x1803);
1855 }
1856
1857 void cdrWrite3(unsigned char rt) {
1858 #ifdef CDR_LOG
1859         CDR_LOG("cdrWrite3() Log: CD3 write: %x\n", rt);
1860 #endif
1861 /*
1862         // Tekken: CDXA fade-out
1863         if( (cdr.Ctrl & 3) == 2 ) {
1864                 cdr.AttenuatorLeft[1] = rt;
1865         }
1866         else if( (cdr.Ctrl & 3) == 3 && rt == 0x20 ) {
1867 #ifdef CDR_LOG
1868                 CDR_LOG( "CD-XA Volume: %X %X | %X %X\n",
1869                         cdr.AttenuatorLeft[0], cdr.AttenuatorLeft[1],
1870                         cdr.AttenuatorRight[0], cdr.AttenuatorRight[1] );
1871 #endif
1872         }
1873 */
1874
1875         // GameShark CDX CD Player: Irq timing mania
1876         if( rt == 0 &&
1877                         cdr.Irq != 0 && cdr.Irq != 0xff &&
1878                         cdr.ResultReady == 0 ) {
1879
1880                 // GS CDX: ~0x28 cycle timing - way too precise
1881                 if( cdr.Irq == CdlGetlocP ) {
1882                         cdrInterrupt();
1883
1884                         psxRegs.interrupt &= ~(1 << PSXINT_CDR);
1885                 }
1886         }
1887
1888
1889         if (rt == 0x07 && cdr.Ctrl & 0x1) {
1890                 cdr.Stat = 0;
1891
1892                 if (cdr.Irq == 0xff) {
1893                         cdr.Irq = 0;
1894                         return;
1895                 }
1896
1897                 // XA streaming - incorrect timing because of this reschedule
1898                 // - Final Fantasy Tactics
1899                 // - various other games
1900
1901                 /*
1902                 if (cdr.Reading && !cdr.ResultReady) {
1903                         CDREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
1904                 }
1905                 */
1906
1907                 return;
1908         }
1909
1910         if (rt == 0x80 && !(cdr.Ctrl & 0x1) && cdr.Readed == 0) {
1911                 cdr.Readed = 1;
1912                 cdr.pTransfer = cdr.Transfer;
1913
1914                 switch (cdr.Mode & 0x30) {
1915                         case MODE_SIZE_2328:
1916                         case 0x00:
1917                                 cdr.pTransfer += 12;
1918                                 break;
1919
1920                         case MODE_SIZE_2340:
1921                                 cdr.pTransfer += 0;
1922                                 break;
1923
1924                         default:
1925                                 break;
1926                 }
1927         }
1928 }
1929
1930 void psxDma3(u32 madr, u32 bcr, u32 chcr) {
1931         u32 cdsize;
1932         u8 *ptr;
1933
1934 #ifdef CDR_LOG
1935         CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
1936 #endif
1937
1938         switch (chcr) {
1939                 case 0x11000000:
1940                 case 0x11400100:
1941                         if (cdr.Readed == 0) {
1942 #ifdef CDR_LOG
1943                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
1944 #endif
1945                                 break;
1946                         }
1947
1948                         cdsize = (bcr & 0xffff) * 4;
1949
1950                         // Ape Escape: bcr = 0001 / 0000
1951                         // - fix boot
1952                         if( cdsize == 0 )
1953                         {
1954                                 switch (cdr.Mode & 0x30) {
1955                                         case 0x00: cdsize = 2048; break;
1956                                         case MODE_SIZE_2328: cdsize = 2328; break;
1957                                         case MODE_SIZE_2340: cdsize = 2340; break;
1958                                 }
1959                         }
1960
1961
1962                         ptr = (u8 *)PSXM(madr);
1963                         if (ptr == NULL) {
1964 #ifdef CPU_LOG
1965                                 CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
1966 #endif
1967                                 break;
1968                         }
1969
1970                         /*
1971                         GS CDX: Enhancement CD crash
1972                         - Setloc 0:0:0
1973                         - CdlPlay
1974                         - Spams DMA3 and gets buffer overrun
1975                         */
1976
1977                         if( (cdr.pTransfer-cdr.Transfer) + cdsize > 2352 )
1978                         {
1979                                 // avoid crash - probably should wrap here
1980                                 //memcpy(ptr, cdr.pTransfer, cdsize);
1981                         }
1982                         else
1983                         {
1984                                 memcpy(ptr, cdr.pTransfer, cdsize);
1985                         }
1986
1987                         psxCpu->Clear(madr, cdsize / 4);
1988                         cdr.pTransfer += cdsize;
1989
1990
1991                         // burst vs normal
1992                         if( chcr == 0x11400100 ) {
1993                                 CDRDMA_INT( (cdsize/4) / 4 );
1994                         }
1995                         else if( chcr == 0x11000000 ) {
1996                                 CDRDMA_INT( (cdsize/4) * 1 );
1997                         }
1998                         return;
1999
2000                 default:
2001 #ifdef CDR_LOG
2002                         CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
2003 #endif
2004                         break;
2005         }
2006
2007         HW_DMA3_CHCR &= SWAP32(~0x01000000);
2008         DMA_INTERRUPT(3);
2009 }
2010
2011 void cdrDmaInterrupt()
2012 {
2013         HW_DMA3_CHCR &= SWAP32(~0x01000000);
2014         DMA_INTERRUPT(3);
2015 }
2016
2017 void cdrReset() {
2018         memset(&cdr, 0, sizeof(cdr));
2019         cdr.CurTrack = 1;
2020         cdr.File = 1;
2021         cdr.Channel = 1;
2022 }
2023
2024 int cdrFreeze(gzFile f, int Mode) {
2025         uintptr_t tmp;
2026
2027
2028         if( Mode == 0 ) {
2029                 StopCdda();
2030         }
2031
2032         gzfreeze(&cdr, sizeof(cdr));
2033
2034         if (Mode == 1)
2035                 tmp = cdr.pTransfer - cdr.Transfer;
2036
2037         gzfreeze(&tmp, sizeof(tmp));
2038
2039         if (Mode == 0)
2040                 cdr.pTransfer = cdr.Transfer + tmp;
2041
2042         return 0;
2043 }
2044
2045 void LidInterrupt() {
2046         cdr.LidCheck = 0x20; // start checker
2047
2048         CDRLID_INT( cdReadTime * 3 );
2049
2050         // generate interrupt if none active - open or close
2051         if (cdr.Irq == 0 || cdr.Irq == 0xff) {
2052                 cdr.Ctrl |= 0x80;
2053                 cdr.Stat = NoIntr;
2054                 AddIrqQueue(CdlNop, 0x800);
2055         }
2056 }