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reverted useless threaded buffering code
[picodrive.git] / Pico / cd / cd_sys.c
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1/***********************************************************\r
2 * *\r
3 * This source file was taken from the Gens project *\r
4 * Written by Stéphane Dallongeville *\r
5 * Copyright (c) 2002 by Stéphane Dallongeville *\r
6 * Modified/adapted for PicoDrive by notaz, 2007 *\r
7 * *\r
8 ***********************************************************/\r
9\r
10#include <stdio.h>\r
11\r
12#include "../PicoInt.h"\r
13#include "cd_sys.h"\r
14#include "cd_file.h"\r
15\r
16#define DEBUG_CD\r
17\r
18#define TRAY_OPEN 0x0500 // TRAY OPEN CDD status\r
19#define NOCD 0x0000 // CD removed CDD status\r
20#define STOPPED 0x0900 // STOPPED CDD status (happen after stop or close tray command)\r
21#define READY 0x0400 // READY CDD status (also used for seeking)\r
22#define FAST_FOW 0x0300 // FAST FORWARD track CDD status\r
23#define FAST_REV 0x10300 // FAST REVERSE track CDD status\r
24#define PLAYING 0x0100 // PLAYING audio track CDD status\r
25\r
26\r
27static int CD_Present = 0;\r
28\r
29\r
30#define CHECK_TRAY_OPEN \\r
31if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) \\r
32{ \\r
33 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \\r
34 \\r
35 Pico_mcd->cdd.Minute = 0; \\r
36 Pico_mcd->cdd.Seconde = 0; \\r
37 Pico_mcd->cdd.Frame = 0; \\r
38 Pico_mcd->cdd.Ext = 0; \\r
39 \\r
40 Pico_mcd->scd.CDD_Complete = 1; \\r
41 \\r
42 return 2; \\r
43}\r
44\r
45\r
46#define CHECK_CD_PRESENT \\r
47if (!CD_Present) \\r
48{ \\r
49 Pico_mcd->scd.Status_CDD = NOCD; \\r
50 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \\r
51 \\r
52 Pico_mcd->cdd.Minute = 0; \\r
53 Pico_mcd->cdd.Seconde = 0; \\r
54 Pico_mcd->cdd.Frame = 0; \\r
55 Pico_mcd->cdd.Ext = 0; \\r
56 \\r
57 Pico_mcd->scd.CDD_Complete = 1; \\r
58 \\r
59 return 3; \\r
60}\r
61\r
62\r
63static int MSF_to_LBA(_msf *MSF)\r
64{\r
65 return (MSF->M * 60 * 75) + (MSF->S * 75) + MSF->F - 150;\r
66}\r
67\r
68\r
69PICO_INTERNAL void LBA_to_MSF(int lba, _msf *MSF)\r
70{\r
71 if (lba < -150) lba = 0;\r
72 else lba += 150;\r
73 MSF->M = lba / (60 * 75);\r
74 MSF->S = (lba / 75) % 60;\r
75 MSF->F = lba % 75;\r
76}\r
77\r
78\r
79static unsigned int MSF_to_Track(_msf *MSF)\r
80{\r
81 int i, Start, Cur;\r
82\r
83 Start = (MSF->M << 16) + (MSF->S << 8) + MSF->F;\r
84\r
85 for(i = 1; i <= (Pico_mcd->TOC.Last_Track + 1); i++)\r
86 {\r
87 Cur = Pico_mcd->TOC.Tracks[i - 1].MSF.M << 16;\r
88 Cur += Pico_mcd->TOC.Tracks[i - 1].MSF.S << 8;\r
89 Cur += Pico_mcd->TOC.Tracks[i - 1].MSF.F;\r
90\r
91 if (Cur > Start) break;\r
92 }\r
93\r
94 --i;\r
95\r
96 if (i > Pico_mcd->TOC.Last_Track) return 100;\r
97 else if (i < 1) i = 1;\r
98\r
99 return (unsigned) i;\r
100}\r
101\r
102\r
103static unsigned int LBA_to_Track(int lba)\r
104{\r
105 _msf MSF;\r
106\r
107 LBA_to_MSF(lba, &MSF);\r
108 return MSF_to_Track(&MSF);\r
109}\r
110\r
111\r
112static void Track_to_MSF(int track, _msf *MSF)\r
113{\r
114 if (track < 1) track = 1;\r
115 else if (track > Pico_mcd->TOC.Last_Track) track = Pico_mcd->TOC.Last_Track;\r
116\r
117 MSF->M = Pico_mcd->TOC.Tracks[track - 1].MSF.M;\r
118 MSF->S = Pico_mcd->TOC.Tracks[track - 1].MSF.S;\r
119 MSF->F = Pico_mcd->TOC.Tracks[track - 1].MSF.F;\r
120}\r
121\r
122\r
123PICO_INTERNAL int Track_to_LBA(int track)\r
124{\r
125 _msf MSF;\r
126\r
127 Track_to_MSF(track, &MSF);\r
128 return MSF_to_LBA(&MSF);\r
129}\r
130\r
131\r
132PICO_INTERNAL void Check_CD_Command(void)\r
133{\r
134 cdprintf("CHECK CD COMMAND");\r
135\r
136 // Check CDC\r
137 if (Pico_mcd->scd.Status_CDC & 1) // CDC is reading data ...\r
138 {\r
139 cdprintf("Got a read command");\r
140\r
141 // DATA ?\r
142 if (Pico_mcd->scd.Cur_Track == 1)\r
143 Pico_mcd->s68k_regs[0x36] |= 0x01;\r
144 else Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO\r
145\r
146 if (Pico_mcd->scd.File_Add_Delay == 0)\r
147 {\r
148 FILE_Read_One_LBA_CDC();\r
149 }\r
150 else Pico_mcd->scd.File_Add_Delay--;\r
151 }\r
152\r
153 // Check CDD\r
154 if (Pico_mcd->scd.CDD_Complete)\r
155 {\r
156 Pico_mcd->scd.CDD_Complete = 0;\r
157\r
158 CDD_Export_Status();\r
159 }\r
160\r
161 if (Pico_mcd->scd.Status_CDD == FAST_FOW)\r
162 {\r
163 Pico_mcd->scd.Cur_LBA += 10;\r
164 CDC_Update_Header();\r
165\r
166 }\r
167 else if (Pico_mcd->scd.Status_CDD == FAST_REV)\r
168 {\r
169 Pico_mcd->scd.Cur_LBA -= 10;\r
170 if (Pico_mcd->scd.Cur_LBA < -150) Pico_mcd->scd.Cur_LBA = -150;\r
171 CDC_Update_Header();\r
172 }\r
173}\r
174\r
175\r
176PICO_INTERNAL int Init_CD_Driver(void)\r
177{\r
178 return 0;\r
179}\r
180\r
181\r
182PICO_INTERNAL void End_CD_Driver(void)\r
183{\r
184 Unload_ISO();\r
185}\r
186\r
187\r
188PICO_INTERNAL void Reset_CD(void)\r
189{\r
190 Pico_mcd->scd.Cur_Track = 0;\r
191 Pico_mcd->scd.Cur_LBA = -150;\r
192 Pico_mcd->scd.Status_CDC &= ~1;\r
193 Pico_mcd->scd.Status_CDD = CD_Present ? READY : NOCD;\r
194 Pico_mcd->scd.CDD_Complete = 0;\r
195 Pico_mcd->scd.File_Add_Delay = 0;\r
196}\r
197\r
198\r
199int Insert_CD(char *iso_name, int is_bin)\r
200{\r
201 int ret = 0;\r
202\r
203 CD_Present = 0;\r
204 Pico_mcd->scd.Status_CDD = NOCD;\r
205\r
206 if (iso_name != NULL)\r
207 {\r
208 ret = Load_ISO(iso_name, is_bin);\r
209 if (ret == 0) {\r
210 CD_Present = 1;\r
211 Pico_mcd->scd.Status_CDD = READY;\r
212 }\r
213 }\r
214\r
215 return ret;\r
216}\r
217\r
218\r
219void Stop_CD(void)\r
220{\r
221 Unload_ISO();\r
222 CD_Present = 0;\r
223}\r
224\r
225\r
226/*\r
227PICO_INTERNAL void Change_CD(void)\r
228{\r
229 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) Close_Tray_CDD_cC();\r
230 else Open_Tray_CDD_cD();\r
231}\r
232*/\r
233\r
234PICO_INTERNAL int Get_Status_CDD_c0(void)\r
235{\r
236 cdprintf("Status command : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);\r
237\r
238 // Clear immediat status\r
239 if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0200)\r
240 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);\r
241 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0700)\r
242 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);\r
243 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0E00)\r
244 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);\r
245\r
246 Pico_mcd->scd.CDD_Complete = 1;\r
247\r
248 return 0;\r
249}\r
250\r
251\r
252PICO_INTERNAL int Stop_CDD_c1(void)\r
253{\r
254 CHECK_TRAY_OPEN\r
255\r
256 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read\r
257\r
258 if (CD_Present) Pico_mcd->scd.Status_CDD = STOPPED;\r
259 else Pico_mcd->scd.Status_CDD = NOCD;\r
260 Pico_mcd->cdd.Status = 0x0000;\r
261\r
262 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped\r
263\r
264 Pico_mcd->cdd.Minute = 0;\r
265 Pico_mcd->cdd.Seconde = 0;\r
266 Pico_mcd->cdd.Frame = 0;\r
267 Pico_mcd->cdd.Ext = 0;\r
268\r
269 Pico_mcd->scd.CDD_Complete = 1;\r
270\r
271 return 0;\r
272}\r
273\r
274\r
275PICO_INTERNAL int Get_Pos_CDD_c20(void)\r
276{\r
277 _msf MSF;\r
278\r
279 cdprintf("command 200 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);\r
280\r
281 CHECK_TRAY_OPEN\r
282\r
283 Pico_mcd->cdd.Status &= 0xFF;\r
284 if (!CD_Present)\r
285 {\r
286 Pico_mcd->scd.Status_CDD = NOCD;\r
287 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
288 }\r
289// else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
290 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
291\r
292 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);\r
293\r
294 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);\r
295\r
296 Pico_mcd->cdd.Minute = INT_TO_BCDW(MSF.M);\r
297 Pico_mcd->cdd.Seconde = INT_TO_BCDW(MSF.S);\r
298 Pico_mcd->cdd.Frame = INT_TO_BCDW(MSF.F);\r
299 Pico_mcd->cdd.Ext = 0;\r
300\r
301 Pico_mcd->scd.CDD_Complete = 1;\r
302\r
303 return 0;\r
304}\r
305\r
306\r
307PICO_INTERNAL int Get_Track_Pos_CDD_c21(void)\r
308{\r
309 int elapsed_time;\r
310 _msf MSF;\r
311\r
312 cdprintf("command 201 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);\r
313\r
314 CHECK_TRAY_OPEN\r
315\r
316 Pico_mcd->cdd.Status &= 0xFF;\r
317 if (!CD_Present)\r
318 {\r
319 Pico_mcd->scd.Status_CDD = NOCD;\r
320 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
321 }\r
322// else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
323 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
324\r
325 elapsed_time = Pico_mcd->scd.Cur_LBA - Track_to_LBA(LBA_to_Track(Pico_mcd->scd.Cur_LBA));\r
326 LBA_to_MSF(elapsed_time - 150, &MSF);\r
327\r
328 cdprintf(" elapsed = %d", elapsed_time);\r
329\r
330 Pico_mcd->cdd.Minute = INT_TO_BCDW(MSF.M);\r
331 Pico_mcd->cdd.Seconde = INT_TO_BCDW(MSF.S);\r
332 Pico_mcd->cdd.Frame = INT_TO_BCDW(MSF.F);\r
333 Pico_mcd->cdd.Ext = 0;\r
334\r
335 Pico_mcd->scd.CDD_Complete = 1;\r
336\r
337 return 0;\r
338}\r
339\r
340\r
341PICO_INTERNAL int Get_Current_Track_CDD_c22(void)\r
342{\r
343 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);\r
344\r
345 CHECK_TRAY_OPEN\r
346\r
347 Pico_mcd->cdd.Status &= 0xFF;\r
348 if (!CD_Present)\r
349 {\r
350 Pico_mcd->scd.Status_CDD = NOCD;\r
351 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
352 }\r
353// else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
354 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
355\r
356 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);\r
357\r
358 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;\r
359 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);\r
360 Pico_mcd->cdd.Seconde = 0;\r
361 Pico_mcd->cdd.Frame = 0;\r
362 Pico_mcd->cdd.Ext = 0;\r
363\r
364 Pico_mcd->scd.CDD_Complete = 1;\r
365\r
366 return 0;\r
367}\r
368\r
369\r
370PICO_INTERNAL int Get_Total_Lenght_CDD_c23(void)\r
371{\r
372 CHECK_TRAY_OPEN\r
373\r
374 Pico_mcd->cdd.Status &= 0xFF;\r
375 if (!CD_Present)\r
376 {\r
377 Pico_mcd->scd.Status_CDD = NOCD;\r
378 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
379 }\r
380// else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
381 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
382\r
383 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.M);\r
384 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.S);\r
385 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.F);\r
386 Pico_mcd->cdd.Ext = 0;\r
387\r
388 Pico_mcd->scd.CDD_Complete = 1;\r
389\r
390 return 0;\r
391}\r
392\r
393\r
394PICO_INTERNAL int Get_First_Last_Track_CDD_c24(void)\r
395{\r
396 CHECK_TRAY_OPEN\r
397\r
398 Pico_mcd->cdd.Status &= 0xFF;\r
399 if (!CD_Present)\r
400 {\r
401 Pico_mcd->scd.Status_CDD = NOCD;\r
402 }\r
403// else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
404 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
405\r
406 Pico_mcd->cdd.Minute = INT_TO_BCDW(1);\r
407 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Last_Track);\r
408 Pico_mcd->cdd.Frame = 0;\r
409 Pico_mcd->cdd.Ext = 0;\r
410\r
411 Pico_mcd->scd.CDD_Complete = 1;\r
412\r
413 return 0;\r
414}\r
415\r
416\r
417PICO_INTERNAL int Get_Track_Adr_CDD_c25(void)\r
418{\r
419 int track_number;\r
420\r
421 CHECK_TRAY_OPEN\r
422\r
423 // track number in TC4 & TC5\r
424\r
425 track_number = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);\r
426\r
427 Pico_mcd->cdd.Status &= 0xFF;\r
428 if (!CD_Present)\r
429 {\r
430 Pico_mcd->scd.Status_CDD = NOCD;\r
431 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;\r
432 }\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
435\r
436 if (track_number > Pico_mcd->TOC.Last_Track) track_number = Pico_mcd->TOC.Last_Track;\r
437 else if (track_number < 1) track_number = 1;\r
438\r
439 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.M);\r
440 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.S);\r
441 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.F);\r
442 Pico_mcd->cdd.Ext = track_number % 10;\r
443\r
444 if (track_number == 1) Pico_mcd->cdd.Frame |= 0x0800; // data track\r
445\r
446 Pico_mcd->scd.CDD_Complete = 1;\r
447 return 0;\r
448}\r
449\r
450\r
451PICO_INTERNAL int Play_CDD_c3(void)\r
452{\r
453 _msf MSF;\r
454 int delay, new_lba;\r
455\r
456 CHECK_TRAY_OPEN\r
457 CHECK_CD_PRESENT\r
458\r
459 // MSF of the track to play in TC buffer\r
460\r
461 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);\r
462 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);\r
463 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);\r
464\r
465 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);\r
466\r
467 new_lba = MSF_to_LBA(&MSF);\r
468 delay = new_lba - Pico_mcd->scd.Cur_LBA;\r
469 if (delay < 0) delay = -delay;\r
470 delay >>= 12;\r
471\r
472 Pico_mcd->scd.Cur_LBA = new_lba;\r
473 CDC_Update_Header();\r
474\r
475 cdprintf("Read : Cur LBA = %d, M=%d, S=%d, F=%d", Pico_mcd->scd.Cur_LBA, MSF.M, MSF.S, MSF.F);\r
476\r
477 if (Pico_mcd->scd.Status_CDD != PLAYING) delay += 20;\r
478\r
479 Pico_mcd->scd.Status_CDD = PLAYING;\r
480 Pico_mcd->cdd.Status = 0x0102;\r
481// Pico_mcd->cdd.Status = COMM_OK;\r
482\r
483 if (Pico_mcd->scd.File_Add_Delay == 0) Pico_mcd->scd.File_Add_Delay = delay;\r
484\r
485 if (Pico_mcd->scd.Cur_Track == 1)\r
486 {\r
487 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA\r
488 }\r
489 else\r
490 {\r
491 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO\r
492 //CD_Audio_Starting = 1;\r
493 FILE_Play_CD_LBA();\r
494 }\r
495\r
496 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;\r
497 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);\r
498 Pico_mcd->cdd.Seconde = 0;\r
499 Pico_mcd->cdd.Frame = 0;\r
500 Pico_mcd->cdd.Ext = 0;\r
501\r
502 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC\r
503\r
504 Pico_mcd->scd.CDD_Complete = 1;\r
505 return 0;\r
506}\r
507\r
508\r
509PICO_INTERNAL int Seek_CDD_c4(void)\r
510{\r
511 _msf MSF;\r
512\r
513 CHECK_TRAY_OPEN\r
514 CHECK_CD_PRESENT\r
515\r
516 // MSF to seek in TC buffer\r
517\r
518 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);\r
519 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);\r
520 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);\r
521\r
522 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);\r
523 Pico_mcd->scd.Cur_LBA = MSF_to_LBA(&MSF);\r
524 CDC_Update_Header();\r
525\r
526 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read\r
527\r
528 Pico_mcd->scd.Status_CDD = READY;\r
529 Pico_mcd->cdd.Status = 0x0200;\r
530\r
531 // DATA ?\r
532 if (Pico_mcd->scd.Cur_Track == 1)\r
533 Pico_mcd->s68k_regs[0x36] |= 0x01;\r
534 else Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO\r
535\r
536 Pico_mcd->cdd.Minute = 0;\r
537 Pico_mcd->cdd.Seconde = 0;\r
538 Pico_mcd->cdd.Frame = 0;\r
539 Pico_mcd->cdd.Ext = 0;\r
540\r
541 Pico_mcd->scd.CDD_Complete = 1;\r
542\r
543 return 0;\r
544}\r
545\r
546\r
547PICO_INTERNAL int Pause_CDD_c6(void)\r
548{\r
549 CHECK_TRAY_OPEN\r
550 CHECK_CD_PRESENT\r
551\r
552 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read to start a new one if raw data\r
553\r
554 Pico_mcd->scd.Status_CDD = READY;\r
555 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;\r
556\r
557 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped\r
558\r
559 Pico_mcd->cdd.Minute = 0;\r
560 Pico_mcd->cdd.Seconde = 0;\r
561 Pico_mcd->cdd.Frame = 0;\r
562 Pico_mcd->cdd.Ext = 0;\r
563\r
564 Pico_mcd->scd.CDD_Complete = 1;\r
565\r
566 return 0;\r
567}\r
568\r
569\r
570PICO_INTERNAL int Resume_CDD_c7(void)\r
571{\r
572 CHECK_TRAY_OPEN\r
573 CHECK_CD_PRESENT\r
574\r
575 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);\r
576\r
577#ifdef DEBUG_CD\r
578 {\r
579 _msf MSF;\r
580 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);\r
581 cdprintf("Resume read : Cur LBA = %d, M=%d, S=%d, F=%d", Pico_mcd->scd.Cur_LBA, MSF.M, MSF.S, MSF.F);\r
582 }\r
583#endif\r
584\r
585 Pico_mcd->scd.Status_CDD = PLAYING;\r
586 Pico_mcd->cdd.Status = 0x0102;\r
587\r
588 if (Pico_mcd->scd.Cur_Track == 1)\r
589 {\r
590 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA\r
591 }\r
592 else\r
593 {\r
594 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO\r
595 //CD_Audio_Starting = 1;\r
596 FILE_Play_CD_LBA();\r
597 }\r
598\r
599 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;\r
600 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);\r
601 Pico_mcd->cdd.Seconde = 0;\r
602 Pico_mcd->cdd.Frame = 0;\r
603 Pico_mcd->cdd.Ext = 0;\r
604\r
605 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC\r
606\r
607 Pico_mcd->scd.CDD_Complete = 1;\r
608 return 0;\r
609}\r
610\r
611\r
612PICO_INTERNAL int Fast_Foward_CDD_c8(void)\r
613{\r
614 CHECK_TRAY_OPEN\r
615 CHECK_CD_PRESENT\r
616\r
617 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read\r
618\r
619 Pico_mcd->scd.Status_CDD = FAST_FOW;\r
620 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;\r
621\r
622 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);\r
623 Pico_mcd->cdd.Seconde = 0;\r
624 Pico_mcd->cdd.Frame = 0;\r
625 Pico_mcd->cdd.Ext = 0;\r
626\r
627 Pico_mcd->scd.CDD_Complete = 1;\r
628\r
629 return 0;\r
630}\r
631\r
632\r
633PICO_INTERNAL int Fast_Rewind_CDD_c9(void)\r
634{\r
635 CHECK_TRAY_OPEN\r
636 CHECK_CD_PRESENT\r
637\r
638 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read\r
639\r
640 Pico_mcd->scd.Status_CDD = FAST_REV;\r
641 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;\r
642\r
643 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);\r
644 Pico_mcd->cdd.Seconde = 0;\r
645 Pico_mcd->cdd.Frame = 0;\r
646 Pico_mcd->cdd.Ext = 0;\r
647\r
648 Pico_mcd->scd.CDD_Complete = 1;\r
649\r
650 return 0;\r
651}\r
652\r
653\r
654PICO_INTERNAL int Close_Tray_CDD_cC(void)\r
655{\r
656 CD_Present = 0;\r
657 //Clear_Sound_Buffer();\r
658\r
659 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read\r
660\r
661 elprintf(EL_STATUS, "tray close\n");\r
662\r
663 if (PicoMCDcloseTray != NULL)\r
664 CD_Present = PicoMCDcloseTray();\r
665\r
666 Pico_mcd->scd.Status_CDD = CD_Present ? STOPPED : NOCD;\r
667 Pico_mcd->cdd.Status = 0x0000;\r
668\r
669 Pico_mcd->cdd.Minute = 0;\r
670 Pico_mcd->cdd.Seconde = 0;\r
671 Pico_mcd->cdd.Frame = 0;\r
672 Pico_mcd->cdd.Ext = 0;\r
673\r
674 Pico_mcd->scd.CDD_Complete = 1;\r
675\r
676 return 0;\r
677}\r
678\r
679\r
680PICO_INTERNAL int Open_Tray_CDD_cD(void)\r
681{\r
682 CHECK_TRAY_OPEN\r
683\r
684 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read\r
685\r
686 elprintf(EL_STATUS, "tray open\n");\r
687\r
688 Unload_ISO();\r
689 CD_Present = 0;\r
690\r
691 if (PicoMCDopenTray != NULL)\r
692 PicoMCDopenTray();\r
693\r
694 Pico_mcd->scd.Status_CDD = TRAY_OPEN;\r
695 Pico_mcd->cdd.Status = 0x0E00;\r
696\r
697 Pico_mcd->cdd.Minute = 0;\r
698 Pico_mcd->cdd.Seconde = 0;\r
699 Pico_mcd->cdd.Frame = 0;\r
700 Pico_mcd->cdd.Ext = 0;\r
701\r
702 Pico_mcd->scd.CDD_Complete = 1;\r
703\r
704 return 0;\r
705}\r
706\r
707\r
708PICO_INTERNAL int CDD_cA(void)\r
709{\r
710 CHECK_TRAY_OPEN\r
711 CHECK_CD_PRESENT\r
712\r
713 Pico_mcd->scd.Status_CDC &= ~1;\r
714\r
715 Pico_mcd->scd.Status_CDD = READY;\r
716 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;\r
717\r
718 Pico_mcd->cdd.Minute = 0;\r
719 Pico_mcd->cdd.Seconde = INT_TO_BCDW(1);\r
720 Pico_mcd->cdd.Frame = INT_TO_BCDW(1);\r
721 Pico_mcd->cdd.Ext = 0;\r
722\r
723 Pico_mcd->scd.CDD_Complete = 1;\r
724\r
725 return 0;\r
726}\r
727\r
728\r
729PICO_INTERNAL int CDD_Def(void)\r
730{\r
731 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;\r
732\r
733 Pico_mcd->cdd.Minute = 0;\r
734 Pico_mcd->cdd.Seconde = 0;\r
735 Pico_mcd->cdd.Frame = 0;\r
736 Pico_mcd->cdd.Ext = 0;\r
737\r
738 return 0;\r
739}\r
740\r
741\r
fast MegaDrive/MegaCD/32X emulator