5 #include "../PicoInt.h"
\r
7 #define cdprintf dprintf
\r
8 //#define cdprintf(x...)
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11 #define TRAY_OPEN 0x0500 // TRAY OPEN CDD status
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12 #define NOCD 0x0000 // CD removed CDD status
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13 #define STOPPED 0x0900 // STOPPED CDD status (happen after stop or close tray command)
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14 #define READY 0x0400 // READY CDD status (also used for seeking)
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15 #define FAST_FOW 0x0300 // FAST FORWARD track CDD status
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16 #define FAST_REV 0x10300 // FAST REVERSE track CDD status
\r
17 #define PLAYING 0x0100 // PLAYING audio track CDD status
\r
23 int CD_Audio_Buffer_L[8192];
\r
24 int CD_Audio_Buffer_R[8192];
\r
25 int CD_Audio_Buffer_Read_Pos = 0;
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26 int CD_Audio_Buffer_Write_Pos = 2000;
\r
27 int CD_Audio_Starting;
\r
30 static int CD_Present = 0;
\r
31 int CD_Timer_Counter = 0; // TODO: check refs
\r
33 static int CDD_Complete;
\r
35 static int File_Add_Delay = 0;
\r
39 #define CHECK_TRAY_OPEN \
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40 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) \
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42 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \
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44 Pico_mcd->cdd.Minute = 0; \
\r
45 Pico_mcd->cdd.Seconde = 0; \
\r
46 Pico_mcd->cdd.Frame = 0; \
\r
47 Pico_mcd->cdd.Ext = 0; \
\r
55 #define CHECK_CD_PRESENT \
\r
58 Pico_mcd->scd.Status_CDD = NOCD; \
\r
59 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \
\r
61 Pico_mcd->cdd.Minute = 0; \
\r
62 Pico_mcd->cdd.Seconde = 0; \
\r
63 Pico_mcd->cdd.Frame = 0; \
\r
64 Pico_mcd->cdd.Ext = 0; \
\r
73 static void MSB2DWORD(unsigned int *d, unsigned char *b)
\r
75 unsigned int retVal;
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77 retVal = (unsigned int )b[0];
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78 retVal = (retVal<<8) + (unsigned int )b[1];
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79 retVal = (retVal<<8) + (unsigned int )b[2];
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80 retVal = (retVal<<8) + (unsigned int )b[3];
\r
86 static int MSF_to_LBA(_msf *MSF)
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88 return (MSF->M * 60 * 75) + (MSF->S * 75) + MSF->F - 150;
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92 void LBA_to_MSF(int lba, _msf *MSF)
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94 if (lba < -150) lba = 0;
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96 MSF->M = lba / (60 * 75);
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97 MSF->S = (lba / 75) % 60;
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102 static unsigned int MSF_to_Track(_msf *MSF)
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106 Start = (MSF->M << 16) + (MSF->S << 8) + MSF->F;
\r
108 for(i = Pico_mcd->scd.TOC.First_Track; i <= (Pico_mcd->scd.TOC.Last_Track + 1); i++)
\r
110 Cur = Pico_mcd->scd.TOC.Tracks[i - Pico_mcd->scd.TOC.First_Track].MSF.M << 16;
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111 Cur += Pico_mcd->scd.TOC.Tracks[i - Pico_mcd->scd.TOC.First_Track].MSF.S << 8;
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112 Cur += Pico_mcd->scd.TOC.Tracks[i - Pico_mcd->scd.TOC.First_Track].MSF.F;
\r
114 if (Cur > Start) break;
\r
119 if (i > Pico_mcd->scd.TOC.Last_Track) return 100;
\r
120 if (i < Pico_mcd->scd.TOC.First_Track) i = Pico_mcd->scd.TOC.First_Track;
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122 return (unsigned) i;
\r
126 static unsigned int LBA_to_Track(int lba)
\r
130 LBA_to_MSF(lba, &MSF);
\r
131 return MSF_to_Track(&MSF);
\r
135 static void Track_to_MSF(int track, _msf *MSF)
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137 if (track < Pico_mcd->scd.TOC.First_Track) track = Pico_mcd->scd.TOC.First_Track;
\r
138 else if (track > Pico_mcd->scd.TOC.Last_Track) track = Pico_mcd->scd.TOC.Last_Track;
\r
140 MSF->M = Pico_mcd->scd.TOC.Tracks[track - Pico_mcd->scd.TOC.First_Track].MSF.M;
\r
141 MSF->S = Pico_mcd->scd.TOC.Tracks[track - Pico_mcd->scd.TOC.First_Track].MSF.S;
\r
142 MSF->F = Pico_mcd->scd.TOC.Tracks[track - Pico_mcd->scd.TOC.First_Track].MSF.F;
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146 int Track_to_LBA(int track)
\r
150 Track_to_MSF(track, &MSF);
\r
151 return MSF_to_LBA(&MSF);
\r
155 void Check_CD_Command(void)
\r
157 cdprintf("CHECK CD COMMAND");
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165 CDD_Export_Status();
\r
170 if (Pico_mcd->scd.Status_CDC & 1) // CDC is reading data ...
\r
172 cdprintf("Got a read command");
\r
175 if (Pico_mcd->scd.TOC.Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type)
\r
176 Pico_mcd->s68k_regs[0x36] |= 0x01;
\r
177 else Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
\r
179 if (File_Add_Delay == 0)
\r
181 FILE_Read_One_LBA_CDC();
\r
183 else File_Add_Delay--;
\r
186 if (Pico_mcd->scd.Status_CDD == FAST_FOW)
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188 Pico_mcd->scd.Cur_LBA += 10;
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189 CDC_Update_Header();
\r
192 else if (Pico_mcd->scd.Status_CDD == FAST_REV)
\r
194 Pico_mcd->scd.Cur_LBA -= 10;
\r
195 if (Pico_mcd->scd.Cur_LBA < -150) Pico_mcd->scd.Cur_LBA = -150;
\r
196 CDC_Update_Header();
\r
201 int Init_CD_Driver(void)
\r
209 void End_CD_Driver(void)
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215 void Reset_CD(void)
\r
217 Pico_mcd->scd.Cur_Track = 0;
\r
218 Pico_mcd->scd.Cur_LBA = -150;
\r
219 Pico_mcd->scd.Status_CDD = READY;
\r
224 int Insert_CD(char *iso_name, int is_bin)
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228 // memset(CD_Audio_Buffer_L, 0, 4096 * 4);
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229 // memset(CD_Audio_Buffer_R, 0, 4096 * 4);
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233 if (iso_name != NULL)
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235 ret = Load_ISO(iso_name, is_bin);
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251 void Change_CD(void)
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253 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) Close_Tray_CDD_cC();
\r
254 else Open_Tray_CDD_cD();
\r
258 int Get_Status_CDD_c0(void)
\r
260 cdprintf("Status command : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
\r
262 // Clear immediat status
\r
263 if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0200)
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264 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
\r
265 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0700)
\r
266 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
\r
267 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0E00)
\r
268 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
\r
276 int Stop_CDD_c1(void)
\r
280 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
\r
282 if (CD_Present) Pico_mcd->scd.Status_CDD = STOPPED;
\r
283 else Pico_mcd->scd.Status_CDD = NOCD;
\r
284 Pico_mcd->cdd.Status = 0x0000;
\r
286 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped
\r
288 Pico_mcd->cdd.Minute = 0;
\r
289 Pico_mcd->cdd.Seconde = 0;
\r
290 Pico_mcd->cdd.Frame = 0;
\r
291 Pico_mcd->cdd.Ext = 0;
\r
299 int Get_Pos_CDD_c20(void)
\r
303 cdprintf("command 200 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
\r
307 Pico_mcd->cdd.Status &= 0xFF;
\r
310 Pico_mcd->scd.Status_CDD = NOCD;
\r
311 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
313 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
314 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
316 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);
\r
318 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);
\r
320 Pico_mcd->cdd.Minute = INT_TO_BCDW(MSF.M);
\r
321 Pico_mcd->cdd.Seconde = INT_TO_BCDW(MSF.S);
\r
322 Pico_mcd->cdd.Frame = INT_TO_BCDW(MSF.F);
\r
323 Pico_mcd->cdd.Ext = 0;
\r
331 int Get_Track_Pos_CDD_c21(void)
\r
336 cdprintf("command 201 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
\r
340 Pico_mcd->cdd.Status &= 0xFF;
\r
343 Pico_mcd->scd.Status_CDD = NOCD;
\r
344 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
346 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
347 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
349 elapsed_time = Pico_mcd->scd.Cur_LBA - Track_to_LBA(LBA_to_Track(Pico_mcd->scd.Cur_LBA));
\r
350 LBA_to_MSF(elapsed_time - 150, &MSF);
\r
352 cdprintf(" elapsed = %d", elapsed_time);
\r
354 Pico_mcd->cdd.Minute = INT_TO_BCDW(MSF.M);
\r
355 Pico_mcd->cdd.Seconde = INT_TO_BCDW(MSF.S);
\r
356 Pico_mcd->cdd.Frame = INT_TO_BCDW(MSF.F);
\r
357 Pico_mcd->cdd.Ext = 0;
\r
365 int Get_Current_Track_CDD_c22(void)
\r
367 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);
\r
371 Pico_mcd->cdd.Status &= 0xFF;
\r
374 Pico_mcd->scd.Status_CDD = NOCD;
\r
375 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
377 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
378 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
380 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);
\r
382 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
\r
383 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
\r
384 Pico_mcd->cdd.Seconde = 0;
\r
385 Pico_mcd->cdd.Frame = 0;
\r
386 Pico_mcd->cdd.Ext = 0;
\r
394 int Get_Total_Lenght_CDD_c23(void)
\r
398 Pico_mcd->cdd.Status &= 0xFF;
\r
401 Pico_mcd->scd.Status_CDD = NOCD;
\r
402 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
404 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
405 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
407 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.TOC.Tracks[Pico_mcd->scd.TOC.Last_Track -
\r
408 Pico_mcd->scd.TOC.First_Track + 1].MSF.M);
\r
409 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->scd.TOC.Tracks[Pico_mcd->scd.TOC.Last_Track -
\r
410 Pico_mcd->scd.TOC.First_Track + 1].MSF.S);
\r
411 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->scd.TOC.Tracks[Pico_mcd->scd.TOC.Last_Track -
\r
412 Pico_mcd->scd.TOC.First_Track + 1].MSF.F);
\r
413 Pico_mcd->cdd.Ext = 0;
\r
416 //Pico_mcd->cdd.Seconde = 2;
\r
424 int Get_First_Last_Track_CDD_c24(void)
\r
428 Pico_mcd->cdd.Status &= 0xFF;
\r
431 Pico_mcd->scd.Status_CDD = NOCD;
\r
433 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
434 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
436 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.TOC.First_Track);
\r
437 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->scd.TOC.Last_Track);
\r
438 Pico_mcd->cdd.Frame = 0;
\r
439 Pico_mcd->cdd.Ext = 0;
\r
442 //Pico_mcd->cdd.Minute = Pico_mcd->cdd.Seconde = 1;
\r
450 int Get_Track_Adr_CDD_c25(void)
\r
456 // track number in TC4 & TC5
\r
458 track_number = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
\r
460 Pico_mcd->cdd.Status &= 0xFF;
\r
463 Pico_mcd->scd.Status_CDD = NOCD;
\r
464 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
466 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
467 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
\r
469 if (track_number > Pico_mcd->scd.TOC.Last_Track) track_number = Pico_mcd->scd.TOC.Last_Track;
\r
470 else if (track_number < Pico_mcd->scd.TOC.First_Track) track_number = Pico_mcd->scd.TOC.First_Track;
\r
472 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.TOC.Tracks[track_number - Pico_mcd->scd.TOC.First_Track].MSF.M);
\r
473 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->scd.TOC.Tracks[track_number - Pico_mcd->scd.TOC.First_Track].MSF.S);
\r
474 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->scd.TOC.Tracks[track_number - Pico_mcd->scd.TOC.First_Track].MSF.F);
\r
475 Pico_mcd->cdd.Ext = track_number % 10;
\r
477 if (Pico_mcd->scd.TOC.Tracks[track_number - Pico_mcd->scd.TOC.First_Track].Type) Pico_mcd->cdd.Frame |= 0x0800;
\r
484 int Play_CDD_c3(void)
\r
487 int delay, new_lba;
\r
492 // MSF of the track to play in TC buffer
\r
494 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);
\r
495 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
\r
496 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);
\r
498 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);
\r
500 new_lba = MSF_to_LBA(&MSF);
\r
501 delay = new_lba - Pico_mcd->scd.Cur_LBA;
\r
502 if (delay < 0) delay = -delay;
\r
505 Pico_mcd->scd.Cur_LBA = new_lba;
\r
506 CDC_Update_Header();
\r
508 cdprintf("Read : Cur LBA = %d, M=%d, S=%d, F=%d", Pico_mcd->scd.Cur_LBA, MSF.M, MSF.S, MSF.F);
\r
510 if (Pico_mcd->scd.Status_CDD != PLAYING) delay += 20;
\r
512 Pico_mcd->scd.Status_CDD = PLAYING;
\r
513 Pico_mcd->cdd.Status = 0x0102;
\r
514 // Pico_mcd->cdd.Status = COMM_OK;
\r
516 if (File_Add_Delay == 0) File_Add_Delay = delay;
\r
518 if (Pico_mcd->scd.TOC.Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type)
\r
520 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA
\r
524 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
\r
525 //CD_Audio_Starting = 1;
\r
526 FILE_Play_CD_LBA();
\r
529 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
\r
530 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
\r
531 Pico_mcd->cdd.Seconde = 0;
\r
532 Pico_mcd->cdd.Frame = 0;
\r
533 Pico_mcd->cdd.Ext = 0;
\r
535 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC
\r
542 int Seek_CDD_c4(void)
\r
549 // MSF to seek in TC buffer
\r
551 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);
\r
552 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
\r
553 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);
\r
555 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);
\r
556 Pico_mcd->scd.Cur_LBA = MSF_to_LBA(&MSF);
\r
557 CDC_Update_Header();
\r
559 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
\r
561 Pico_mcd->scd.Status_CDD = READY;
\r
562 Pico_mcd->cdd.Status = 0x0200;
\r
565 if (Pico_mcd->scd.TOC.Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type)
\r
566 Pico_mcd->s68k_regs[0x36] |= 0x01;
\r
567 else Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
\r
569 Pico_mcd->cdd.Minute = 0;
\r
570 Pico_mcd->cdd.Seconde = 0;
\r
571 Pico_mcd->cdd.Frame = 0;
\r
572 Pico_mcd->cdd.Ext = 0;
\r
580 int Pause_CDD_c6(void)
\r
585 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read to start a new one if raw data
\r
587 Pico_mcd->scd.Status_CDD = READY;
\r
588 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
\r
590 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped
\r
592 Pico_mcd->cdd.Minute = 0;
\r
593 Pico_mcd->cdd.Seconde = 0;
\r
594 Pico_mcd->cdd.Frame = 0;
\r
595 Pico_mcd->cdd.Ext = 0;
\r
603 int Resume_CDD_c7(void)
\r
608 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);
\r
613 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);
\r
614 cdprintf("Resume read : Cur LBA = %d, M=%d, S=%d, F=%d", Pico_mcd->scd.Cur_LBA, MSF.M, MSF.S, MSF.F);
\r
618 Pico_mcd->scd.Status_CDD = PLAYING;
\r
619 Pico_mcd->cdd.Status = 0x0102;
\r
621 if (Pico_mcd->scd.TOC.Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type)
\r
623 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA
\r
627 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
\r
628 //CD_Audio_Starting = 1;
\r
629 FILE_Play_CD_LBA();
\r
632 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
\r
633 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
\r
634 Pico_mcd->cdd.Seconde = 0;
\r
635 Pico_mcd->cdd.Frame = 0;
\r
636 Pico_mcd->cdd.Ext = 0;
\r
638 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC
\r
645 int Fast_Foward_CDD_c8(void)
\r
650 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
\r
652 Pico_mcd->scd.Status_CDD = FAST_FOW;
\r
653 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;
\r
655 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
\r
656 Pico_mcd->cdd.Seconde = 0;
\r
657 Pico_mcd->cdd.Frame = 0;
\r
658 Pico_mcd->cdd.Ext = 0;
\r
666 int Fast_Rewind_CDD_c9(void)
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671 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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673 Pico_mcd->scd.Status_CDD = FAST_REV;
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674 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;
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676 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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677 Pico_mcd->cdd.Seconde = 0;
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678 Pico_mcd->cdd.Frame = 0;
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679 Pico_mcd->cdd.Ext = 0;
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687 int Close_Tray_CDD_cC(void)
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689 //Clear_Sound_Buffer();
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691 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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695 char new_iso[1024];
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697 memset(new_iso, 0, 1024);
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699 while (!Change_File_L(new_iso, Rom_Dir, "Load SegaCD image file", "SegaCD image file\0*.bin;*.iso;*.raw\0All files\0*.*\0\0", ""));
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700 Reload_SegaCD(new_iso);
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706 Pico_mcd->scd.Status_CDD = STOPPED;
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707 Pico_mcd->cdd.Status = 0x0000;
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709 Pico_mcd->cdd.Minute = 0;
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710 Pico_mcd->cdd.Seconde = 0;
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711 Pico_mcd->cdd.Frame = 0;
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712 Pico_mcd->cdd.Ext = 0;
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721 int Open_Tray_CDD_cD(void)
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725 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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730 Pico_mcd->scd.Status_CDD = TRAY_OPEN;
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731 Pico_mcd->cdd.Status = 0x0E00;
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733 Pico_mcd->cdd.Minute = 0;
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734 Pico_mcd->cdd.Seconde = 0;
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735 Pico_mcd->cdd.Frame = 0;
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736 Pico_mcd->cdd.Ext = 0;
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749 Pico_mcd->scd.Status_CDC &= ~1;
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751 Pico_mcd->scd.Status_CDD = READY;
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752 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
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754 Pico_mcd->cdd.Minute = 0;
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755 Pico_mcd->cdd.Seconde = INT_TO_BCDW(1);
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756 Pico_mcd->cdd.Frame = INT_TO_BCDW(1);
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757 Pico_mcd->cdd.Ext = 0;
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767 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
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769 Pico_mcd->cdd.Minute = 0;
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770 Pico_mcd->cdd.Seconde = 0;
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771 Pico_mcd->cdd.Frame = 0;
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772 Pico_mcd->cdd.Ext = 0;
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780 /***************************
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781 * Others CD functions *
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782 **************************/
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785 // do we need them?
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787 void Write_CD_Audio(short *Buf, int rate, int channel, int lenght)
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789 unsigned int lenght_src, lenght_dst;
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790 unsigned int pos_src, pas_src;
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792 if (rate == 0) return;
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793 if (Sound_Rate == 0) return;
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795 if (CD_Audio_Starting)
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797 CD_Audio_Starting = 0;
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798 memset(CD_Audio_Buffer_L, 0, 4096 * 4);
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799 memset(CD_Audio_Buffer_R, 0, 4096 * 4);
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800 CD_Audio_Buffer_Write_Pos = (CD_Audio_Buffer_Read_Pos + 2000) & 0xFFF;
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803 lenght_src = rate / 75; // 75th of a second
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804 lenght_dst = Sound_Rate / 75; // 75th of a second
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806 pas_src = (lenght_src << 16) / lenght_dst;
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810 fprintf(debug_SCD_file, "\n********* Write Pos = %d ", CD_Audio_Buffer_Write_Pos);
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817 mov edi, CD_Audio_Buffer_Write_Pos
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820 mov ecx, lenght_dst
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824 jmp short loop_stereo
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829 movsx eax, word ptr [ebx + esi * 4]
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830 mov CD_Audio_Buffer_L[edi * 4], eax
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831 movsx eax, word ptr [ebx + esi * 4 + 2]
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832 mov CD_Audio_Buffer_R[edi * 4], eax
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833 mov esi, dword ptr pos_src
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837 mov dword ptr pos_src, esi
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840 jns short loop_stereo
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842 mov CD_Audio_Buffer_Write_Pos, edi
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849 mov edi, CD_Audio_Buffer_Write_Pos
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852 mov ecx, lenght_dst
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856 jmp short loop_mono
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861 movsx eax, word ptr [ebx + esi * 2]
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862 mov CD_Audio_Buffer_L[edi * 4], eax
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863 mov CD_Audio_Buffer_R[edi * 4], eax
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864 mov esi, dword ptr pos_src
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868 mov dword ptr pos_src, esi
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871 jns short loop_mono
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873 mov CD_Audio_Buffer_Write_Pos, edi
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878 fprintf(debug_SCD_file, "Write Pos 2 = %d\n\n", CD_Audio_Buffer_Write_Pos);
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883 void Update_CD_Audio(int **buf, int lenght)
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885 int *Buf_L, *Buf_R;
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891 if (Pico_mcd->s68k_regs[0x36] & 0x01) return;
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892 if (!(Pico_mcd->scd.Status_CDC & 1)) return;
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893 if (CD_Audio_Starting) return;
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896 fprintf(debug_SCD_file, "\n********* Read Pos Normal = %d ", CD_Audio_Buffer_Read_Pos);
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899 if (CD_Audio_Buffer_Write_Pos < CD_Audio_Buffer_Read_Pos)
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901 diff = CD_Audio_Buffer_Write_Pos + (4096) - CD_Audio_Buffer_Read_Pos;
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905 diff = CD_Audio_Buffer_Write_Pos - CD_Audio_Buffer_Read_Pos;
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908 if (diff < 500) CD_Audio_Buffer_Read_Pos -= 2000;
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909 else if (diff > 3500) CD_Audio_Buffer_Read_Pos += 2000;
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912 else fprintf(debug_SCD_file, " pas de modifs ");
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915 CD_Audio_Buffer_Read_Pos &= 0xFFF;
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918 fprintf(debug_SCD_file, "Read Pos = %d ", CD_Audio_Buffer_Read_Pos);
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926 mov esi, CD_Audio_Buffer_Read_Pos
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931 mov eax, CD_Audio_Buffer_L[esi * 4]
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940 mov esi, CD_Audio_Buffer_Read_Pos
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945 mov eax, CD_Audio_Buffer_R[esi * 4]
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953 mov CD_Audio_Buffer_Read_Pos, esi
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958 CD_Audio_Buffer_Read_Pos += lenght;
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959 CD_Audio_Buffer_Read_Pos &= 0xFFF;
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963 fprintf(debug_SCD_file, "Read Pos 2 = %d\n\n", CD_Audio_Buffer_Read_Pos);
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