bf098bc5 |
1 | /***********************************************************\r |
2 | * *\r |
3 | * This source is 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 |
cc68a136 |
9 | \r |
10 | #include "../PicoInt.h"\r |
11 | \r |
c459aefd |
12 | #define cdprintf dprintf\r |
cc68a136 |
13 | //#define cdprintf(x...)\r |
14 | \r |
15 | \r |
16 | #define CDC_DMA_SPEED 256\r |
17 | \r |
cc68a136 |
18 | \r |
19 | static void CDD_Reset(void)\r |
20 | {\r |
21 | // Reseting CDD\r |
22 | \r |
23 | memset(Pico_mcd->s68k_regs+0x34, 0, 2*2); // CDD.Fader, CDD.Control\r |
24 | Pico_mcd->cdd.Status = 0;\r |
25 | Pico_mcd->cdd.Minute = 0;\r |
26 | Pico_mcd->cdd.Seconde = 0;\r |
27 | Pico_mcd->cdd.Frame = 0;\r |
28 | Pico_mcd->cdd.Ext = 0;\r |
29 | \r |
30 | // clear receive status and transfer command\r |
31 | memset(Pico_mcd->s68k_regs+0x38, 0, 20);\r |
32 | Pico_mcd->s68k_regs[0x38+9] = 0xF; // Default checksum\r |
33 | }\r |
34 | \r |
35 | \r |
36 | static void CDC_Reset(void)\r |
37 | {\r |
38 | // Reseting CDC\r |
39 | \r |
40 | memset(Pico_mcd->cdc.Buffer, 0, (16 * 1024 * 2) + 2352);\r |
41 | \r |
42 | CDC_Update_Header();\r |
43 | \r |
44 | Pico_mcd->cdc.COMIN = 0;\r |
45 | Pico_mcd->cdc.IFSTAT = 0xFF;\r |
46 | Pico_mcd->cdc.DAC.N = 0;\r |
47 | Pico_mcd->cdc.DBC.N = 0;\r |
48 | Pico_mcd->cdc.HEAD.N = 0x01000000;\r |
49 | Pico_mcd->cdc.PT.N = 0;\r |
50 | Pico_mcd->cdc.WA.N = 2352 * 2;\r |
51 | Pico_mcd->cdc.STAT.N = 0x00000080;\r |
52 | Pico_mcd->cdc.SBOUT = 0;\r |
53 | Pico_mcd->cdc.IFCTRL = 0;\r |
54 | Pico_mcd->cdc.CTRL.N = 0;\r |
55 | \r |
51a902ae |
56 | Pico_mcd->cdd.CDC_Decode_Reg_Read = 0;\r |
c459aefd |
57 | Pico_mcd->scd.Status_CDC &= ~0x08;\r |
cc68a136 |
58 | }\r |
59 | \r |
60 | \r |
61 | void LC89510_Reset(void)\r |
62 | {\r |
63 | CDD_Reset();\r |
64 | CDC_Reset();\r |
65 | \r |
cb4a513a |
66 | // clear DMA_Adr & Stop_Watch\r |
67 | memset(Pico_mcd->s68k_regs + 0xA, 0, 4);\r |
cc68a136 |
68 | }\r |
69 | \r |
cc68a136 |
70 | \r |
bf098bc5 |
71 | void Update_CDC_TRansfer(int which)\r |
72 | {\r |
cb4a513a |
73 | unsigned int DMA_Adr, dep, length, len;\r |
bf098bc5 |
74 | unsigned short *dest;\r |
75 | unsigned char *src;\r |
cc68a136 |
76 | \r |
77 | if (Pico_mcd->cdc.DBC.N <= (CDC_DMA_SPEED * 2))\r |
78 | {\r |
bf098bc5 |
79 | length = (Pico_mcd->cdc.DBC.N + 1) >> 1;\r |
c459aefd |
80 | Pico_mcd->scd.Status_CDC &= ~0x08; // Last transfer\r |
bf098bc5 |
81 | Pico_mcd->s68k_regs[4] |= 0x80; // End data transfer\r |
82 | Pico_mcd->s68k_regs[4] &= ~0x40; // no more data ready\r |
83 | Pico_mcd->cdc.IFSTAT |= 0x08; // No more data transfer in progress\r |
cc68a136 |
84 | \r |
bf098bc5 |
85 | if (Pico_mcd->cdc.IFCTRL & 0x40) // DTEIEN = Data Trasnfer End Interrupt Enable ?\r |
cc68a136 |
86 | {\r |
87 | Pico_mcd->cdc.IFSTAT &= ~0x40;\r |
88 | \r |
bf098bc5 |
89 | if (Pico_mcd->s68k_regs[0x33] & (1<<5))\r |
90 | {\r |
91 | dprintf("cdc DTE irq 5");\r |
92 | SekInterruptS68k(5);\r |
93 | }\r |
cc68a136 |
94 | }\r |
95 | }\r |
bf098bc5 |
96 | else length = CDC_DMA_SPEED;\r |
97 | \r |
cc68a136 |
98 | \r |
bf098bc5 |
99 | // TODO: dst bounds checking? DAC.N alignment?\r |
100 | src = Pico_mcd->cdc.Buffer + Pico_mcd->cdc.DAC.N;\r |
cb4a513a |
101 | DMA_Adr = (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB];\r |
cc68a136 |
102 | \r |
bf098bc5 |
103 | if (which == 7) // WORD RAM\r |
cc68a136 |
104 | {\r |
bf098bc5 |
105 | if (Pico_mcd->s68k_regs[3] & 4)\r |
cc68a136 |
106 | {\r |
cb4a513a |
107 | dep = ((DMA_Adr & 0x3FFF) << 3);\r |
bf098bc5 |
108 | cdprintf("CD DMA # %04x -> word_ram1M # %06x, len=%i",\r |
109 | Pico_mcd->cdc.DAC.N, dep, length);\r |
110 | \r |
cb4a513a |
111 | dep = ((DMA_Adr & 0x3FFF) << 4);\r |
bf098bc5 |
112 | if (!(Pico_mcd->s68k_regs[3]&1)) dep += 2;\r |
113 | dest = (unsigned short *) (Pico_mcd->word_ram + dep);\r |
114 | \r |
115 | for (len = length; len > 0; len--, src+=2, dest+=2)\r |
116 | *dest = (src[0]<<8) | src[1];\r |
cc68a136 |
117 | }\r |
bf098bc5 |
118 | else\r |
119 | {\r |
cb4a513a |
120 | dep = ((DMA_Adr & 0x7FFF) << 3);\r |
bf098bc5 |
121 | cdprintf("CD DMA # %04x -> word_ram2M # %06x, len=%i",\r |
122 | Pico_mcd->cdc.DAC.N, dep, length);\r |
123 | dest = (unsigned short *) (Pico_mcd->word_ram + dep);\r |
cc68a136 |
124 | \r |
bf098bc5 |
125 | for (len = length; len > 0; len--, src+=2, dest++)\r |
126 | *dest = (src[0]<<8) | src[1];\r |
127 | }\r |
cc68a136 |
128 | }\r |
bf098bc5 |
129 | else if (which == 4) // PCM RAM\r |
cc68a136 |
130 | {\r |
bf098bc5 |
131 | #if 0\r |
132 | dest = (unsigned char *) Ram_PCM;\r |
cb4a513a |
133 | dep = ((DMA_Adr & 0x03FF) << 2) + PCM_Chip.Bank;\r |
bf098bc5 |
134 | #else\r |
cb4a513a |
135 | cdprintf("CD DMA # %04x -> PCD TODO", Pico_mcd->cdc.DAC.N);\r |
bf098bc5 |
136 | #endif\r |
137 | }\r |
138 | else if (which == 5) // PRG RAM\r |
139 | {\r |
cb4a513a |
140 | dep = DMA_Adr << 3;\r |
bf098bc5 |
141 | dest = (unsigned short *) (Pico_mcd->prg_ram + dep);\r |
142 | cdprintf("CD DMA # %04x -> prg_ram # %06x, len=%i",\r |
143 | Pico_mcd->cdc.DAC.N, dep, length);\r |
cc68a136 |
144 | \r |
bf098bc5 |
145 | for (len = length; len > 0; len--, src+=2, dest++)\r |
146 | *dest = (src[0]<<8) | src[1];\r |
cc68a136 |
147 | }\r |
148 | \r |
bf098bc5 |
149 | length <<= 1;\r |
150 | Pico_mcd->cdc.DAC.N = (Pico_mcd->cdc.DAC.N + length) & 0xFFFF;\r |
c459aefd |
151 | if (Pico_mcd->scd.Status_CDC & 0x08) Pico_mcd->cdc.DBC.N -= length;\r |
cc68a136 |
152 | else Pico_mcd->cdc.DBC.N = 0;\r |
153 | }\r |
cc68a136 |
154 | \r |
155 | \r |
156 | unsigned short Read_CDC_Host(int is_sub)\r |
157 | {\r |
158 | int addr;\r |
159 | \r |
c459aefd |
160 | if (!(Pico_mcd->scd.Status_CDC & 0x08))\r |
cc68a136 |
161 | {\r |
162 | // Transfer data disabled\r |
c459aefd |
163 | cdprintf("Read_CDC_Host: Transfer data disabled");\r |
cc68a136 |
164 | return 0;\r |
165 | }\r |
166 | \r |
167 | if ((is_sub && (Pico_mcd->s68k_regs[4] & 7) != 3) ||\r |
168 | (!is_sub && (Pico_mcd->s68k_regs[4] & 7) != 2))\r |
169 | {\r |
170 | // Wrong setting\r |
c459aefd |
171 | cdprintf("Read_CDC_Host: Wrong setting");\r |
cc68a136 |
172 | return 0;\r |
173 | }\r |
174 | \r |
175 | Pico_mcd->cdc.DBC.N -= 2;\r |
176 | \r |
177 | if (Pico_mcd->cdc.DBC.N <= 0)\r |
178 | {\r |
179 | Pico_mcd->cdc.DBC.N = 0;\r |
c459aefd |
180 | Pico_mcd->scd.Status_CDC &= ~0x08; // Last transfer\r |
cc68a136 |
181 | Pico_mcd->s68k_regs[4] |= 0x80; // End data transfer\r |
182 | Pico_mcd->s68k_regs[4] &= ~0x40; // no more data ready\r |
183 | Pico_mcd->cdc.IFSTAT |= 0x08; // No more data transfer in progress\r |
184 | \r |
185 | if (Pico_mcd->cdc.IFCTRL & 0x40) // DTEIEN = Data Transfer End Interrupt Enable ?\r |
186 | {\r |
187 | Pico_mcd->cdc.IFSTAT &= ~0x40;\r |
188 | \r |
189 | if (Pico_mcd->s68k_regs[0x33]&(1<<5)) {\r |
190 | dprintf("m68k: s68k irq 5");\r |
191 | SekInterruptS68k(5);\r |
192 | }\r |
193 | \r |
c459aefd |
194 | cdprintf("CDC - DTE interrupt");\r |
cc68a136 |
195 | }\r |
196 | }\r |
197 | \r |
198 | addr = Pico_mcd->cdc.DAC.N;\r |
199 | Pico_mcd->cdc.DAC.N += 2;\r |
c459aefd |
200 | \r |
201 | cdprintf("Read_CDC_Host sub=%i d=%04x dac=%04x dbc=%04x", is_sub,\r |
202 | (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1], Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N);\r |
203 | \r |
cc68a136 |
204 | return (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1];\r |
205 | \r |
206 | #if 0\r |
207 | __asm\r |
208 | {\r |
209 | mov esi, Pico_mcd->cdc.DAC.N\r |
210 | lea ebx, Pico_mcd->cdc.Buffer\r |
211 | // and esi, 0x3FFF\r |
212 | mov ax, [ebx + esi]\r |
213 | add esi, 2\r |
214 | rol ax, 8\r |
215 | mov Pico_mcd->cdc.DAC.N, esi\r |
216 | mov val, ax\r |
217 | }\r |
218 | #endif\r |
219 | }\r |
220 | \r |
221 | \r |
222 | void CDC_Update_Header(void)\r |
223 | {\r |
224 | if (Pico_mcd->cdc.CTRL.B.B1 & 0x01) // Sub-Header wanted ?\r |
225 | {\r |
226 | Pico_mcd->cdc.HEAD.B.B0 = 0;\r |
227 | Pico_mcd->cdc.HEAD.B.B1 = 0;\r |
228 | Pico_mcd->cdc.HEAD.B.B2 = 0;\r |
229 | Pico_mcd->cdc.HEAD.B.B3 = 0;\r |
230 | }\r |
231 | else\r |
232 | {\r |
233 | _msf MSF;\r |
234 | \r |
235 | LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);\r |
236 | \r |
237 | Pico_mcd->cdc.HEAD.B.B0 = INT_TO_BCDB(MSF.M);\r |
238 | Pico_mcd->cdc.HEAD.B.B1 = INT_TO_BCDB(MSF.S);\r |
239 | Pico_mcd->cdc.HEAD.B.B2 = INT_TO_BCDB(MSF.F);\r |
240 | Pico_mcd->cdc.HEAD.B.B3 = 0x01;\r |
241 | }\r |
242 | }\r |
243 | \r |
244 | \r |
245 | unsigned char CDC_Read_Reg(void)\r |
246 | {\r |
247 | unsigned char ret;\r |
248 | \r |
cc68a136 |
249 | switch(Pico_mcd->s68k_regs[5] & 0xF)\r |
250 | {\r |
251 | case 0x0: // COMIN\r |
c459aefd |
252 | cdprintf("CDC read reg 00 = %.2X", Pico_mcd->cdc.COMIN);\r |
cc68a136 |
253 | \r |
254 | Pico_mcd->s68k_regs[5] = 0x1;\r |
255 | return Pico_mcd->cdc.COMIN;\r |
256 | \r |
257 | case 0x1: // IFSTAT\r |
c459aefd |
258 | cdprintf("CDC read reg 01 = %.2X", Pico_mcd->cdc.IFSTAT);\r |
cc68a136 |
259 | \r |
51a902ae |
260 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 1); // Reg 1 (decoding)\r |
cc68a136 |
261 | Pico_mcd->s68k_regs[5] = 0x2;\r |
262 | return Pico_mcd->cdc.IFSTAT;\r |
263 | \r |
264 | case 0x2: // DBCL\r |
c459aefd |
265 | cdprintf("CDC read reg 02 = %.2X", Pico_mcd->cdc.DBC.B.L);\r |
cc68a136 |
266 | \r |
267 | Pico_mcd->s68k_regs[5] = 0x3;\r |
268 | return Pico_mcd->cdc.DBC.B.L;\r |
269 | \r |
270 | case 0x3: // DBCH\r |
c459aefd |
271 | cdprintf("CDC read reg 03 = %.2X", Pico_mcd->cdc.DBC.B.H);\r |
cc68a136 |
272 | \r |
273 | Pico_mcd->s68k_regs[5] = 0x4;\r |
274 | return Pico_mcd->cdc.DBC.B.H;\r |
275 | \r |
276 | case 0x4: // HEAD0\r |
c459aefd |
277 | cdprintf("CDC read reg 04 = %.2X", Pico_mcd->cdc.HEAD.B.B0);\r |
cc68a136 |
278 | \r |
51a902ae |
279 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 4); // Reg 4 (decoding)\r |
cc68a136 |
280 | Pico_mcd->s68k_regs[5] = 0x5;\r |
281 | return Pico_mcd->cdc.HEAD.B.B0;\r |
282 | \r |
283 | case 0x5: // HEAD1\r |
c459aefd |
284 | cdprintf("CDC read reg 05 = %.2X", Pico_mcd->cdc.HEAD.B.B1);\r |
cc68a136 |
285 | \r |
51a902ae |
286 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 5); // Reg 5 (decoding)\r |
cc68a136 |
287 | Pico_mcd->s68k_regs[5] = 0x6;\r |
288 | return Pico_mcd->cdc.HEAD.B.B1;\r |
289 | \r |
290 | case 0x6: // HEAD2\r |
c459aefd |
291 | cdprintf("CDC read reg 06 = %.2X", Pico_mcd->cdc.HEAD.B.B2);\r |
cc68a136 |
292 | \r |
51a902ae |
293 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 6); // Reg 6 (decoding)\r |
cc68a136 |
294 | Pico_mcd->s68k_regs[5] = 0x7;\r |
295 | return Pico_mcd->cdc.HEAD.B.B2;\r |
296 | \r |
297 | case 0x7: // HEAD3\r |
c459aefd |
298 | cdprintf("CDC read reg 07 = %.2X", Pico_mcd->cdc.HEAD.B.B3);\r |
cc68a136 |
299 | \r |
51a902ae |
300 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 7); // Reg 7 (decoding)\r |
cc68a136 |
301 | Pico_mcd->s68k_regs[5] = 0x8;\r |
302 | return Pico_mcd->cdc.HEAD.B.B3;\r |
303 | \r |
304 | case 0x8: // PTL\r |
c459aefd |
305 | cdprintf("CDC read reg 08 = %.2X", Pico_mcd->cdc.PT.B.L);\r |
cc68a136 |
306 | \r |
51a902ae |
307 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 8); // Reg 8 (decoding)\r |
cc68a136 |
308 | Pico_mcd->s68k_regs[5] = 0x9;\r |
309 | return Pico_mcd->cdc.PT.B.L;\r |
310 | \r |
311 | case 0x9: // PTH\r |
c459aefd |
312 | cdprintf("CDC read reg 09 = %.2X", Pico_mcd->cdc.PT.B.H);\r |
cc68a136 |
313 | \r |
51a902ae |
314 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 9); // Reg 9 (decoding)\r |
cc68a136 |
315 | Pico_mcd->s68k_regs[5] = 0xA;\r |
316 | return Pico_mcd->cdc.PT.B.H;\r |
317 | \r |
318 | case 0xA: // WAL\r |
c459aefd |
319 | cdprintf("CDC read reg 10 = %.2X", Pico_mcd->cdc.WA.B.L);\r |
cc68a136 |
320 | \r |
321 | Pico_mcd->s68k_regs[5] = 0xB;\r |
322 | return Pico_mcd->cdc.WA.B.L;\r |
323 | \r |
324 | case 0xB: // WAH\r |
c459aefd |
325 | cdprintf("CDC read reg 11 = %.2X", Pico_mcd->cdc.WA.B.H);\r |
cc68a136 |
326 | \r |
327 | Pico_mcd->s68k_regs[5] = 0xC;\r |
328 | return Pico_mcd->cdc.WA.B.H;\r |
329 | \r |
330 | case 0xC: // STAT0\r |
c459aefd |
331 | cdprintf("CDC read reg 12 = %.2X", Pico_mcd->cdc.STAT.B.B0);\r |
cc68a136 |
332 | \r |
51a902ae |
333 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 12); // Reg 12 (decoding)\r |
cc68a136 |
334 | Pico_mcd->s68k_regs[5] = 0xD;\r |
335 | return Pico_mcd->cdc.STAT.B.B0;\r |
336 | \r |
337 | case 0xD: // STAT1\r |
c459aefd |
338 | cdprintf("CDC read reg 13 = %.2X", Pico_mcd->cdc.STAT.B.B1);\r |
cc68a136 |
339 | \r |
51a902ae |
340 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 13); // Reg 13 (decoding)\r |
cc68a136 |
341 | Pico_mcd->s68k_regs[5] = 0xE;\r |
342 | return Pico_mcd->cdc.STAT.B.B1;\r |
343 | \r |
344 | case 0xE: // STAT2\r |
c459aefd |
345 | cdprintf("CDC read reg 14 = %.2X", Pico_mcd->cdc.STAT.B.B2);\r |
cc68a136 |
346 | \r |
51a902ae |
347 | Pico_mcd->cdd.CDC_Decode_Reg_Read |= (1 << 14); // Reg 14 (decoding)\r |
cc68a136 |
348 | Pico_mcd->s68k_regs[5] = 0xF;\r |
349 | return Pico_mcd->cdc.STAT.B.B2;\r |
350 | \r |
351 | case 0xF: // STAT3\r |
c459aefd |
352 | cdprintf("CDC read reg 15 = %.2X", Pico_mcd->cdc.STAT.B.B3);\r |
cc68a136 |
353 | \r |
354 | ret = Pico_mcd->cdc.STAT.B.B3;\r |
355 | Pico_mcd->cdc.IFSTAT |= 0x20; // decoding interrupt flag cleared\r |
356 | if ((Pico_mcd->cdc.CTRL.B.B0 & 0x80) && (Pico_mcd->cdc.IFCTRL & 0x20))\r |
357 | {\r |
51a902ae |
358 | if ((Pico_mcd->cdd.CDC_Decode_Reg_Read & 0x73F2) == 0x73F2)\r |
cc68a136 |
359 | Pico_mcd->cdc.STAT.B.B3 = 0x80;\r |
360 | }\r |
361 | return ret;\r |
362 | }\r |
363 | \r |
364 | return 0;\r |
365 | }\r |
366 | \r |
367 | \r |
368 | void CDC_Write_Reg(unsigned char Data)\r |
369 | {\r |
c459aefd |
370 | cdprintf("CDC write reg%02d = %.2X", Pico_mcd->s68k_regs[5] & 0xF, Data);\r |
cc68a136 |
371 | \r |
372 | switch (Pico_mcd->s68k_regs[5] & 0xF)\r |
373 | {\r |
374 | case 0x0: // SBOUT\r |
375 | Pico_mcd->s68k_regs[5] = 0x1;\r |
376 | Pico_mcd->cdc.SBOUT = Data;\r |
377 | \r |
378 | break;\r |
379 | \r |
380 | case 0x1: // IFCTRL\r |
381 | Pico_mcd->s68k_regs[5] = 0x2;\r |
382 | Pico_mcd->cdc.IFCTRL = Data;\r |
383 | \r |
384 | if ((Pico_mcd->cdc.IFCTRL & 0x02) == 0) // Stop data transfer\r |
385 | {\r |
386 | Pico_mcd->cdc.DBC.N = 0;\r |
c459aefd |
387 | Pico_mcd->scd.Status_CDC &= ~0x08;\r |
cc68a136 |
388 | Pico_mcd->cdc.IFSTAT |= 0x08; // No more data transfer in progress\r |
389 | }\r |
390 | break;\r |
391 | \r |
392 | case 0x2: // DBCL\r |
393 | Pico_mcd->s68k_regs[5] = 0x3;\r |
394 | Pico_mcd->cdc.DBC.B.L = Data;\r |
395 | \r |
396 | break;\r |
397 | \r |
398 | case 0x3: // DBCH\r |
399 | Pico_mcd->s68k_regs[5] = 0x4;\r |
400 | Pico_mcd->cdc.DBC.B.H = Data;\r |
401 | \r |
402 | break;\r |
403 | \r |
404 | case 0x4: // DACL\r |
405 | Pico_mcd->s68k_regs[5] = 0x5;\r |
406 | Pico_mcd->cdc.DAC.B.L = Data;\r |
407 | \r |
408 | break;\r |
409 | \r |
410 | case 0x5: // DACH\r |
411 | Pico_mcd->s68k_regs[5] = 0x6;\r |
412 | Pico_mcd->cdc.DAC.B.H = Data;\r |
413 | \r |
414 | break;\r |
415 | \r |
416 | case 0x6: // DTTRG\r |
417 | if (Pico_mcd->cdc.IFCTRL & 0x02) // Data transfer enable ?\r |
418 | {\r |
419 | Pico_mcd->cdc.IFSTAT &= ~0x08; // Data transfer in progress\r |
c459aefd |
420 | Pico_mcd->scd.Status_CDC |= 0x08; // Data transfer in progress\r |
cc68a136 |
421 | Pico_mcd->s68k_regs[4] &= 0x7F; // A data transfer start\r |
422 | \r |
c459aefd |
423 | cdprintf("************** Starting Data Transfer ***********");\r |
cc68a136 |
424 | cdprintf("RS0 = %.4X DAC = %.4X DBC = %.4X DMA adr = %.4X\n\n", Pico_mcd->s68k_regs[4]<<8,\r |
cb4a513a |
425 | Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N, (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB]);\r |
cc68a136 |
426 | }\r |
427 | break;\r |
428 | \r |
429 | case 0x7: // DTACK\r |
430 | Pico_mcd->cdc.IFSTAT |= 0x40; // end data transfer interrupt flag cleared\r |
431 | break;\r |
432 | \r |
433 | case 0x8: // WAL\r |
434 | Pico_mcd->s68k_regs[5] = 0x9;\r |
435 | Pico_mcd->cdc.WA.B.L = Data;\r |
436 | \r |
437 | break;\r |
438 | \r |
439 | case 0x9: // WAH\r |
440 | Pico_mcd->s68k_regs[5] = 0xA;\r |
441 | Pico_mcd->cdc.WA.B.H = Data;\r |
442 | \r |
443 | break;\r |
444 | \r |
445 | case 0xA: // CTRL0\r |
446 | Pico_mcd->s68k_regs[5] = 0xB;\r |
447 | Pico_mcd->cdc.CTRL.B.B0 = Data;\r |
448 | \r |
449 | break;\r |
450 | \r |
451 | case 0xB: // CTRL1\r |
452 | Pico_mcd->s68k_regs[5] = 0xC;\r |
453 | Pico_mcd->cdc.CTRL.B.B1 = Data;\r |
454 | \r |
455 | break;\r |
456 | \r |
457 | case 0xC: // PTL\r |
458 | Pico_mcd->s68k_regs[5] = 0xD;\r |
459 | Pico_mcd->cdc.PT.B.L = Data;\r |
460 | \r |
461 | break;\r |
462 | \r |
463 | case 0xD: // PTH\r |
464 | Pico_mcd->s68k_regs[5] = 0xE;\r |
465 | Pico_mcd->cdc.PT.B.H = Data;\r |
466 | \r |
467 | break;\r |
468 | \r |
469 | case 0xE: // CTRL2\r |
470 | Pico_mcd->cdc.CTRL.B.B2 = Data;\r |
471 | break;\r |
472 | \r |
473 | case 0xF: // RESET\r |
474 | CDC_Reset();\r |
475 | break;\r |
476 | }\r |
477 | }\r |
478 | \r |
479 | \r |
480 | static int bswapwrite(int a, unsigned short d)\r |
481 | {\r |
482 | *(unsigned short *)(Pico_mcd->s68k_regs + a) = (d>>8)|(d<<8);\r |
483 | return d + (d >> 8);\r |
484 | }\r |
485 | \r |
486 | void CDD_Export_Status(void)\r |
487 | {\r |
488 | unsigned int csum;\r |
489 | \r |
490 | csum = bswapwrite( 0x38+0, Pico_mcd->cdd.Status);\r |
491 | csum += bswapwrite( 0x38+2, Pico_mcd->cdd.Minute);\r |
492 | csum += bswapwrite( 0x38+4, Pico_mcd->cdd.Seconde);\r |
493 | csum += bswapwrite( 0x38+6, Pico_mcd->cdd.Frame);\r |
494 | Pico_mcd->s68k_regs[0x38+8] = Pico_mcd->cdd.Ext;\r |
495 | csum += Pico_mcd->cdd.Ext;\r |
496 | Pico_mcd->s68k_regs[0x38+9] = ~csum & 0xf;\r |
497 | \r |
672ad671 |
498 | Pico_mcd->s68k_regs[0x37] &= 3; // CDD.Control\r |
cc68a136 |
499 | \r |
500 | if (Pico_mcd->s68k_regs[0x33] & (1<<4))\r |
501 | {\r |
502 | dprintf("cdd export irq 4");\r |
503 | SekInterruptS68k(4);\r |
504 | }\r |
505 | \r |
c459aefd |
506 | // cdprintf("CDD exported status\n");\r |
507 | cdprintf("out: Status=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X Checksum=%.4X",\r |
cc68a136 |
508 | (Pico_mcd->s68k_regs[0x38+0] << 8) | Pico_mcd->s68k_regs[0x38+1],\r |
509 | (Pico_mcd->s68k_regs[0x38+2] << 8) | Pico_mcd->s68k_regs[0x38+3],\r |
510 | (Pico_mcd->s68k_regs[0x38+4] << 8) | Pico_mcd->s68k_regs[0x38+5],\r |
511 | (Pico_mcd->s68k_regs[0x38+6] << 8) | Pico_mcd->s68k_regs[0x38+7],\r |
512 | (Pico_mcd->s68k_regs[0x38+8] << 8) | Pico_mcd->s68k_regs[0x38+9]);\r |
513 | }\r |
514 | \r |
515 | \r |
516 | void CDD_Import_Command(void)\r |
517 | {\r |
c459aefd |
518 | // cdprintf("CDD importing command\n");\r |
519 | cdprintf("in: Command=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X Checksum=%.4X",\r |
cc68a136 |
520 | (Pico_mcd->s68k_regs[0x38+10+0] << 8) | Pico_mcd->s68k_regs[0x38+10+1],\r |
521 | (Pico_mcd->s68k_regs[0x38+10+2] << 8) | Pico_mcd->s68k_regs[0x38+10+3],\r |
522 | (Pico_mcd->s68k_regs[0x38+10+4] << 8) | Pico_mcd->s68k_regs[0x38+10+5],\r |
523 | (Pico_mcd->s68k_regs[0x38+10+6] << 8) | Pico_mcd->s68k_regs[0x38+10+7],\r |
524 | (Pico_mcd->s68k_regs[0x38+10+8] << 8) | Pico_mcd->s68k_regs[0x38+10+9]);\r |
525 | \r |
526 | switch (Pico_mcd->s68k_regs[0x38+10+0])\r |
527 | {\r |
528 | case 0x0: // STATUS (?)\r |
529 | Get_Status_CDD_c0();\r |
530 | break;\r |
531 | \r |
532 | case 0x1: // STOP ALL (?)\r |
533 | Stop_CDD_c1();\r |
534 | break;\r |
535 | \r |
536 | case 0x2: // GET TOC INFORMATIONS\r |
537 | switch(Pico_mcd->s68k_regs[0x38+10+3])\r |
538 | {\r |
539 | case 0x0: // get current position (MSF format)\r |
540 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00);\r |
541 | Get_Pos_CDD_c20();\r |
542 | break;\r |
543 | \r |
544 | case 0x1: // get elapsed time of current track played/scanned (relative MSF format)\r |
545 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 1;\r |
546 | Get_Track_Pos_CDD_c21();\r |
547 | break;\r |
548 | \r |
549 | case 0x2: // get current track in RS2-RS3\r |
550 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 2;\r |
551 | Get_Current_Track_CDD_c22();\r |
552 | break;\r |
553 | \r |
bf098bc5 |
554 | case 0x3: // get total length (MSF format)\r |
cc68a136 |
555 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 3;\r |
556 | Get_Total_Lenght_CDD_c23();\r |
557 | break;\r |
558 | \r |
559 | case 0x4: // first & last track number\r |
560 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 4;\r |
561 | Get_First_Last_Track_CDD_c24();\r |
562 | break;\r |
563 | \r |
564 | case 0x5: // get track addresse (MSF format)\r |
565 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 5;\r |
566 | Get_Track_Adr_CDD_c25();\r |
567 | break;\r |
568 | \r |
569 | default : // invalid, then we return status\r |
570 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 0xF;\r |
571 | Get_Status_CDD_c0();\r |
572 | break;\r |
573 | }\r |
574 | break;\r |
575 | \r |
576 | case 0x3: // READ\r |
577 | Play_CDD_c3();\r |
578 | break;\r |
579 | \r |
580 | case 0x4: // SEEK\r |
581 | Seek_CDD_c4();\r |
582 | break;\r |
583 | \r |
584 | case 0x6: // PAUSE/STOP\r |
585 | Pause_CDD_c6();\r |
586 | break;\r |
587 | \r |
588 | case 0x7: // RESUME\r |
589 | Resume_CDD_c7();\r |
590 | break;\r |
591 | \r |
592 | case 0x8: // FAST FOWARD\r |
593 | Fast_Foward_CDD_c8();\r |
594 | break;\r |
595 | \r |
596 | case 0x9: // FAST REWIND\r |
597 | Fast_Rewind_CDD_c9();\r |
598 | break;\r |
599 | \r |
600 | case 0xA: // RECOVER INITIAL STATE (?)\r |
601 | CDD_cA();\r |
602 | break;\r |
603 | \r |
604 | case 0xC: // CLOSE TRAY\r |
605 | Close_Tray_CDD_cC();\r |
606 | break;\r |
607 | \r |
608 | case 0xD: // OPEN TRAY\r |
609 | Open_Tray_CDD_cD();\r |
610 | break;\r |
611 | \r |
612 | default: // UNKNOWN\r |
613 | CDD_Def();\r |
614 | break;\r |
615 | }\r |
616 | }\r |
617 | \r |