| 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 |
| 9 | \r |
| 10 | #include "../PicoInt.h"\r |
| 11 | \r |
| 12 | #define cdprintf dprintf\r |
| 13 | //#define cdprintf(x...)\r |
| 14 | \r |
| 15 | \r |
| 16 | #define CDC_DMA_SPEED 256\r |
| 17 | \r |
| 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 |
| 56 | Pico_mcd->cdc.Decode_Reg_Read = 0;\r |
| 57 | Pico_mcd->scd.Status_CDC &= ~0x08;\r |
| 58 | }\r |
| 59 | \r |
| 60 | \r |
| 61 | void LC89510_Reset(void)\r |
| 62 | {\r |
| 63 | CDD_Reset();\r |
| 64 | CDC_Reset();\r |
| 65 | \r |
| 66 | // clear DMA_Adr & Stop_Watch\r |
| 67 | memset(Pico_mcd->s68k_regs + 0xA, 0, 4);\r |
| 68 | }\r |
| 69 | \r |
| 70 | \r |
| 71 | void Update_CDC_TRansfer(int which)\r |
| 72 | {\r |
| 73 | unsigned int DMA_Adr, dep, length, len;\r |
| 74 | unsigned short *dest;\r |
| 75 | unsigned char *src;\r |
| 76 | \r |
| 77 | if (Pico_mcd->cdc.DBC.N <= (CDC_DMA_SPEED * 2))\r |
| 78 | {\r |
| 79 | length = (Pico_mcd->cdc.DBC.N + 1) >> 1;\r |
| 80 | Pico_mcd->scd.Status_CDC &= ~0x08; // Last transfer\r |
| 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 |
| 84 | \r |
| 85 | if (Pico_mcd->cdc.IFCTRL & 0x40) // DTEIEN = Data Trasnfer End Interrupt Enable ?\r |
| 86 | {\r |
| 87 | Pico_mcd->cdc.IFSTAT &= ~0x40;\r |
| 88 | \r |
| 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 |
| 94 | }\r |
| 95 | }\r |
| 96 | else length = CDC_DMA_SPEED;\r |
| 97 | \r |
| 98 | \r |
| 99 | // TODO: dst bounds checking? DAC.N alignment?\r |
| 100 | src = Pico_mcd->cdc.Buffer + Pico_mcd->cdc.DAC.N;\r |
| 101 | DMA_Adr = (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB];\r |
| 102 | \r |
| 103 | if (which == 7) // WORD RAM\r |
| 104 | {\r |
| 105 | if (Pico_mcd->s68k_regs[3] & 4)\r |
| 106 | {\r |
| 107 | dep = ((DMA_Adr & 0x3FFF) << 3);\r |
| 108 | cdprintf("CD DMA # %04x -> word_ram1M # %06x, len=%i",\r |
| 109 | Pico_mcd->cdc.DAC.N, dep, length);\r |
| 110 | \r |
| 111 | dep = ((DMA_Adr & 0x3FFF) << 4);\r |
| 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 |
| 117 | \r |
| 118 | { // debug\r |
| 119 | unsigned char *b1 = Pico_mcd->word_ram + dep;\r |
| 120 | unsigned char *b2 = (unsigned char *)dest - 8;\r |
| 121 | dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r |
| 122 | b1[0], b1[1], b1[4], b1[5], b2[0], b2[1], b2[4], b2[5]);\r |
| 123 | }\r |
| 124 | }\r |
| 125 | else\r |
| 126 | {\r |
| 127 | dep = ((DMA_Adr & 0x7FFF) << 3);\r |
| 128 | cdprintf("CD DMA # %04x -> word_ram2M # %06x, len=%i",\r |
| 129 | Pico_mcd->cdc.DAC.N, dep, length);\r |
| 130 | dest = (unsigned short *) (Pico_mcd->word_ram + dep);\r |
| 131 | \r |
| 132 | for (len = length; len > 0; len--, src+=2, dest++)\r |
| 133 | *dest = (src[0]<<8) | src[1];\r |
| 134 | \r |
| 135 | { // debug\r |
| 136 | unsigned char *b1 = Pico_mcd->word_ram + dep;\r |
| 137 | unsigned char *b2 = (unsigned char *)dest - 4;\r |
| 138 | dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r |
| 139 | b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r |
| 140 | }\r |
| 141 | }\r |
| 142 | }\r |
| 143 | else if (which == 4) // PCM RAM\r |
| 144 | {\r |
| 145 | #if 0\r |
| 146 | dest = (unsigned char *) Ram_PCM;\r |
| 147 | dep = ((DMA_Adr & 0x03FF) << 2) + PCM_Chip.Bank;\r |
| 148 | #else\r |
| 149 | cdprintf("CD DMA # %04x -> PCM TODO", Pico_mcd->cdc.DAC.N);\r |
| 150 | #endif\r |
| 151 | }\r |
| 152 | else if (which == 5) // PRG RAM\r |
| 153 | {\r |
| 154 | dep = DMA_Adr << 3;\r |
| 155 | dest = (unsigned short *) (Pico_mcd->prg_ram + dep);\r |
| 156 | cdprintf("CD DMA # %04x -> prg_ram # %06x, len=%i",\r |
| 157 | Pico_mcd->cdc.DAC.N, dep, length);\r |
| 158 | \r |
| 159 | for (len = length; len > 0; len--, src+=2, dest++)\r |
| 160 | *dest = (src[0]<<8) | src[1];\r |
| 161 | \r |
| 162 | { // debug\r |
| 163 | unsigned char *b1 = Pico_mcd->prg_ram + dep;\r |
| 164 | unsigned char *b2 = (unsigned char *)dest - 4;\r |
| 165 | dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r |
| 166 | b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r |
| 167 | }\r |
| 168 | }\r |
| 169 | \r |
| 170 | length <<= 1;\r |
| 171 | Pico_mcd->cdc.DAC.N = (Pico_mcd->cdc.DAC.N + length) & 0xFFFF;\r |
| 172 | if (Pico_mcd->scd.Status_CDC & 0x08) Pico_mcd->cdc.DBC.N -= length;\r |
| 173 | else Pico_mcd->cdc.DBC.N = 0;\r |
| 174 | \r |
| 175 | // update DMA_Adr\r |
| 176 | length >>= 2;\r |
| 177 | if (which != 4) length >>= 1;\r |
| 178 | DMA_Adr += length;\r |
| 179 | Pico_mcd->s68k_regs[0xA] = DMA_Adr >> 8;\r |
| 180 | Pico_mcd->s68k_regs[0xB] = DMA_Adr;\r |
| 181 | }\r |
| 182 | \r |
| 183 | \r |
| 184 | unsigned short Read_CDC_Host(int is_sub)\r |
| 185 | {\r |
| 186 | int addr;\r |
| 187 | \r |
| 188 | if (!(Pico_mcd->scd.Status_CDC & 0x08))\r |
| 189 | {\r |
| 190 | // Transfer data disabled\r |
| 191 | cdprintf("Read_CDC_Host: Transfer data disabled");\r |
| 192 | return 0;\r |
| 193 | }\r |
| 194 | \r |
| 195 | if ((is_sub && (Pico_mcd->s68k_regs[4] & 7) != 3) ||\r |
| 196 | (!is_sub && (Pico_mcd->s68k_regs[4] & 7) != 2))\r |
| 197 | {\r |
| 198 | // Wrong setting\r |
| 199 | cdprintf("Read_CDC_Host: Wrong setting");\r |
| 200 | return 0;\r |
| 201 | }\r |
| 202 | \r |
| 203 | Pico_mcd->cdc.DBC.N -= 2;\r |
| 204 | \r |
| 205 | if (Pico_mcd->cdc.DBC.N <= 0)\r |
| 206 | {\r |
| 207 | Pico_mcd->cdc.DBC.N = 0;\r |
| 208 | Pico_mcd->scd.Status_CDC &= ~0x08; // Last transfer\r |
| 209 | Pico_mcd->s68k_regs[4] |= 0x80; // End data transfer\r |
| 210 | Pico_mcd->s68k_regs[4] &= ~0x40; // no more data ready\r |
| 211 | Pico_mcd->cdc.IFSTAT |= 0x08; // No more data transfer in progress\r |
| 212 | \r |
| 213 | if (Pico_mcd->cdc.IFCTRL & 0x40) // DTEIEN = Data Transfer End Interrupt Enable ?\r |
| 214 | {\r |
| 215 | Pico_mcd->cdc.IFSTAT &= ~0x40;\r |
| 216 | \r |
| 217 | if (Pico_mcd->s68k_regs[0x33]&(1<<5)) {\r |
| 218 | dprintf("m68k: s68k irq 5");\r |
| 219 | SekInterruptS68k(5);\r |
| 220 | }\r |
| 221 | \r |
| 222 | cdprintf("CDC - DTE interrupt");\r |
| 223 | }\r |
| 224 | }\r |
| 225 | \r |
| 226 | addr = Pico_mcd->cdc.DAC.N;\r |
| 227 | Pico_mcd->cdc.DAC.N += 2;\r |
| 228 | \r |
| 229 | cdprintf("Read_CDC_Host sub=%i d=%04x dac=%04x dbc=%04x", is_sub,\r |
| 230 | (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1], Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N);\r |
| 231 | \r |
| 232 | return (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1];\r |
| 233 | \r |
| 234 | #if 0\r |
| 235 | __asm\r |
| 236 | {\r |
| 237 | mov esi, Pico_mcd->cdc.DAC.N\r |
| 238 | lea ebx, Pico_mcd->cdc.Buffer\r |
| 239 | // and esi, 0x3FFF\r |
| 240 | mov ax, [ebx + esi]\r |
| 241 | add esi, 2\r |
| 242 | rol ax, 8\r |
| 243 | mov Pico_mcd->cdc.DAC.N, esi\r |
| 244 | mov val, ax\r |
| 245 | }\r |
| 246 | #endif\r |
| 247 | }\r |
| 248 | \r |
| 249 | \r |
| 250 | void CDC_Update_Header(void)\r |
| 251 | {\r |
| 252 | if (Pico_mcd->cdc.CTRL.B.B1 & 0x01) // Sub-Header wanted ?\r |
| 253 | {\r |
| 254 | Pico_mcd->cdc.HEAD.B.B0 = 0;\r |
| 255 | Pico_mcd->cdc.HEAD.B.B1 = 0;\r |
| 256 | Pico_mcd->cdc.HEAD.B.B2 = 0;\r |
| 257 | Pico_mcd->cdc.HEAD.B.B3 = 0;\r |
| 258 | }\r |
| 259 | else\r |
| 260 | {\r |
| 261 | _msf MSF;\r |
| 262 | \r |
| 263 | LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);\r |
| 264 | \r |
| 265 | Pico_mcd->cdc.HEAD.B.B0 = INT_TO_BCDB(MSF.M);\r |
| 266 | Pico_mcd->cdc.HEAD.B.B1 = INT_TO_BCDB(MSF.S);\r |
| 267 | Pico_mcd->cdc.HEAD.B.B2 = INT_TO_BCDB(MSF.F);\r |
| 268 | Pico_mcd->cdc.HEAD.B.B3 = 0x01;\r |
| 269 | }\r |
| 270 | }\r |
| 271 | \r |
| 272 | \r |
| 273 | unsigned char CDC_Read_Reg(void)\r |
| 274 | {\r |
| 275 | unsigned char ret;\r |
| 276 | \r |
| 277 | switch(Pico_mcd->s68k_regs[5] & 0xF)\r |
| 278 | {\r |
| 279 | case 0x0: // COMIN\r |
| 280 | cdprintf("CDC read reg 00 = %.2X", Pico_mcd->cdc.COMIN);\r |
| 281 | \r |
| 282 | Pico_mcd->s68k_regs[5] = 0x1;\r |
| 283 | return Pico_mcd->cdc.COMIN;\r |
| 284 | \r |
| 285 | case 0x1: // IFSTAT\r |
| 286 | cdprintf("CDC read reg 01 = %.2X", Pico_mcd->cdc.IFSTAT);\r |
| 287 | \r |
| 288 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 1); // Reg 1 (decoding)\r |
| 289 | Pico_mcd->s68k_regs[5] = 0x2;\r |
| 290 | return Pico_mcd->cdc.IFSTAT;\r |
| 291 | \r |
| 292 | case 0x2: // DBCL\r |
| 293 | cdprintf("CDC read reg 02 = %.2X", Pico_mcd->cdc.DBC.B.L);\r |
| 294 | \r |
| 295 | Pico_mcd->s68k_regs[5] = 0x3;\r |
| 296 | return Pico_mcd->cdc.DBC.B.L;\r |
| 297 | \r |
| 298 | case 0x3: // DBCH\r |
| 299 | cdprintf("CDC read reg 03 = %.2X", Pico_mcd->cdc.DBC.B.H);\r |
| 300 | \r |
| 301 | Pico_mcd->s68k_regs[5] = 0x4;\r |
| 302 | return Pico_mcd->cdc.DBC.B.H;\r |
| 303 | \r |
| 304 | case 0x4: // HEAD0\r |
| 305 | cdprintf("CDC read reg 04 = %.2X", Pico_mcd->cdc.HEAD.B.B0);\r |
| 306 | \r |
| 307 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 4); // Reg 4 (decoding)\r |
| 308 | Pico_mcd->s68k_regs[5] = 0x5;\r |
| 309 | return Pico_mcd->cdc.HEAD.B.B0;\r |
| 310 | \r |
| 311 | case 0x5: // HEAD1\r |
| 312 | cdprintf("CDC read reg 05 = %.2X", Pico_mcd->cdc.HEAD.B.B1);\r |
| 313 | \r |
| 314 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 5); // Reg 5 (decoding)\r |
| 315 | Pico_mcd->s68k_regs[5] = 0x6;\r |
| 316 | return Pico_mcd->cdc.HEAD.B.B1;\r |
| 317 | \r |
| 318 | case 0x6: // HEAD2\r |
| 319 | cdprintf("CDC read reg 06 = %.2X", Pico_mcd->cdc.HEAD.B.B2);\r |
| 320 | \r |
| 321 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 6); // Reg 6 (decoding)\r |
| 322 | Pico_mcd->s68k_regs[5] = 0x7;\r |
| 323 | return Pico_mcd->cdc.HEAD.B.B2;\r |
| 324 | \r |
| 325 | case 0x7: // HEAD3\r |
| 326 | cdprintf("CDC read reg 07 = %.2X", Pico_mcd->cdc.HEAD.B.B3);\r |
| 327 | \r |
| 328 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 7); // Reg 7 (decoding)\r |
| 329 | Pico_mcd->s68k_regs[5] = 0x8;\r |
| 330 | return Pico_mcd->cdc.HEAD.B.B3;\r |
| 331 | \r |
| 332 | case 0x8: // PTL\r |
| 333 | cdprintf("CDC read reg 08 = %.2X", Pico_mcd->cdc.PT.B.L);\r |
| 334 | \r |
| 335 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 8); // Reg 8 (decoding)\r |
| 336 | Pico_mcd->s68k_regs[5] = 0x9;\r |
| 337 | return Pico_mcd->cdc.PT.B.L;\r |
| 338 | \r |
| 339 | case 0x9: // PTH\r |
| 340 | cdprintf("CDC read reg 09 = %.2X", Pico_mcd->cdc.PT.B.H);\r |
| 341 | \r |
| 342 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 9); // Reg 9 (decoding)\r |
| 343 | Pico_mcd->s68k_regs[5] = 0xA;\r |
| 344 | return Pico_mcd->cdc.PT.B.H;\r |
| 345 | \r |
| 346 | case 0xA: // WAL\r |
| 347 | cdprintf("CDC read reg 10 = %.2X", Pico_mcd->cdc.WA.B.L);\r |
| 348 | \r |
| 349 | Pico_mcd->s68k_regs[5] = 0xB;\r |
| 350 | return Pico_mcd->cdc.WA.B.L;\r |
| 351 | \r |
| 352 | case 0xB: // WAH\r |
| 353 | cdprintf("CDC read reg 11 = %.2X", Pico_mcd->cdc.WA.B.H);\r |
| 354 | \r |
| 355 | Pico_mcd->s68k_regs[5] = 0xC;\r |
| 356 | return Pico_mcd->cdc.WA.B.H;\r |
| 357 | \r |
| 358 | case 0xC: // STAT0\r |
| 359 | cdprintf("CDC read reg 12 = %.2X", Pico_mcd->cdc.STAT.B.B0);\r |
| 360 | \r |
| 361 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 12); // Reg 12 (decoding)\r |
| 362 | Pico_mcd->s68k_regs[5] = 0xD;\r |
| 363 | return Pico_mcd->cdc.STAT.B.B0;\r |
| 364 | \r |
| 365 | case 0xD: // STAT1\r |
| 366 | cdprintf("CDC read reg 13 = %.2X", Pico_mcd->cdc.STAT.B.B1);\r |
| 367 | \r |
| 368 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 13); // Reg 13 (decoding)\r |
| 369 | Pico_mcd->s68k_regs[5] = 0xE;\r |
| 370 | return Pico_mcd->cdc.STAT.B.B1;\r |
| 371 | \r |
| 372 | case 0xE: // STAT2\r |
| 373 | cdprintf("CDC read reg 14 = %.2X", Pico_mcd->cdc.STAT.B.B2);\r |
| 374 | \r |
| 375 | Pico_mcd->cdc.Decode_Reg_Read |= (1 << 14); // Reg 14 (decoding)\r |
| 376 | Pico_mcd->s68k_regs[5] = 0xF;\r |
| 377 | return Pico_mcd->cdc.STAT.B.B2;\r |
| 378 | \r |
| 379 | case 0xF: // STAT3\r |
| 380 | cdprintf("CDC read reg 15 = %.2X", Pico_mcd->cdc.STAT.B.B3);\r |
| 381 | \r |
| 382 | ret = Pico_mcd->cdc.STAT.B.B3;\r |
| 383 | Pico_mcd->cdc.IFSTAT |= 0x20; // decoding interrupt flag cleared\r |
| 384 | if ((Pico_mcd->cdc.CTRL.B.B0 & 0x80) && (Pico_mcd->cdc.IFCTRL & 0x20))\r |
| 385 | {\r |
| 386 | if ((Pico_mcd->cdc.Decode_Reg_Read & 0x73F2) == 0x73F2)\r |
| 387 | Pico_mcd->cdc.STAT.B.B3 = 0x80;\r |
| 388 | }\r |
| 389 | return ret;\r |
| 390 | }\r |
| 391 | \r |
| 392 | return 0;\r |
| 393 | }\r |
| 394 | \r |
| 395 | \r |
| 396 | void CDC_Write_Reg(unsigned char Data)\r |
| 397 | {\r |
| 398 | cdprintf("CDC write reg%02d = %.2X", Pico_mcd->s68k_regs[5] & 0xF, Data);\r |
| 399 | \r |
| 400 | switch (Pico_mcd->s68k_regs[5] & 0xF)\r |
| 401 | {\r |
| 402 | case 0x0: // SBOUT\r |
| 403 | Pico_mcd->s68k_regs[5] = 0x1;\r |
| 404 | Pico_mcd->cdc.SBOUT = Data;\r |
| 405 | \r |
| 406 | break;\r |
| 407 | \r |
| 408 | case 0x1: // IFCTRL\r |
| 409 | Pico_mcd->s68k_regs[5] = 0x2;\r |
| 410 | Pico_mcd->cdc.IFCTRL = Data;\r |
| 411 | \r |
| 412 | if ((Pico_mcd->cdc.IFCTRL & 0x02) == 0) // Stop data transfer\r |
| 413 | {\r |
| 414 | Pico_mcd->cdc.DBC.N = 0;\r |
| 415 | Pico_mcd->scd.Status_CDC &= ~0x08;\r |
| 416 | Pico_mcd->cdc.IFSTAT |= 0x08; // No more data transfer in progress\r |
| 417 | }\r |
| 418 | break;\r |
| 419 | \r |
| 420 | case 0x2: // DBCL\r |
| 421 | Pico_mcd->s68k_regs[5] = 0x3;\r |
| 422 | Pico_mcd->cdc.DBC.B.L = Data;\r |
| 423 | \r |
| 424 | break;\r |
| 425 | \r |
| 426 | case 0x3: // DBCH\r |
| 427 | Pico_mcd->s68k_regs[5] = 0x4;\r |
| 428 | Pico_mcd->cdc.DBC.B.H = Data;\r |
| 429 | \r |
| 430 | break;\r |
| 431 | \r |
| 432 | case 0x4: // DACL\r |
| 433 | Pico_mcd->s68k_regs[5] = 0x5;\r |
| 434 | Pico_mcd->cdc.DAC.B.L = Data;\r |
| 435 | \r |
| 436 | break;\r |
| 437 | \r |
| 438 | case 0x5: // DACH\r |
| 439 | Pico_mcd->s68k_regs[5] = 0x6;\r |
| 440 | Pico_mcd->cdc.DAC.B.H = Data;\r |
| 441 | \r |
| 442 | break;\r |
| 443 | \r |
| 444 | case 0x6: // DTTRG\r |
| 445 | if (Pico_mcd->cdc.IFCTRL & 0x02) // Data transfer enable ?\r |
| 446 | {\r |
| 447 | Pico_mcd->cdc.IFSTAT &= ~0x08; // Data transfer in progress\r |
| 448 | Pico_mcd->scd.Status_CDC |= 0x08; // Data transfer in progress\r |
| 449 | Pico_mcd->s68k_regs[4] &= 0x7F; // A data transfer start\r |
| 450 | \r |
| 451 | cdprintf("************** Starting Data Transfer ***********");\r |
| 452 | cdprintf("RS0 = %.4X DAC = %.4X DBC = %.4X DMA adr = %.4X\n\n", Pico_mcd->s68k_regs[4]<<8,\r |
| 453 | Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N, (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB]);\r |
| 454 | }\r |
| 455 | break;\r |
| 456 | \r |
| 457 | case 0x7: // DTACK\r |
| 458 | Pico_mcd->cdc.IFSTAT |= 0x40; // end data transfer interrupt flag cleared\r |
| 459 | break;\r |
| 460 | \r |
| 461 | case 0x8: // WAL\r |
| 462 | Pico_mcd->s68k_regs[5] = 0x9;\r |
| 463 | Pico_mcd->cdc.WA.B.L = Data;\r |
| 464 | \r |
| 465 | break;\r |
| 466 | \r |
| 467 | case 0x9: // WAH\r |
| 468 | Pico_mcd->s68k_regs[5] = 0xA;\r |
| 469 | Pico_mcd->cdc.WA.B.H = Data;\r |
| 470 | \r |
| 471 | break;\r |
| 472 | \r |
| 473 | case 0xA: // CTRL0\r |
| 474 | Pico_mcd->s68k_regs[5] = 0xB;\r |
| 475 | Pico_mcd->cdc.CTRL.B.B0 = Data;\r |
| 476 | \r |
| 477 | break;\r |
| 478 | \r |
| 479 | case 0xB: // CTRL1\r |
| 480 | Pico_mcd->s68k_regs[5] = 0xC;\r |
| 481 | Pico_mcd->cdc.CTRL.B.B1 = Data;\r |
| 482 | \r |
| 483 | break;\r |
| 484 | \r |
| 485 | case 0xC: // PTL\r |
| 486 | Pico_mcd->s68k_regs[5] = 0xD;\r |
| 487 | Pico_mcd->cdc.PT.B.L = Data;\r |
| 488 | \r |
| 489 | break;\r |
| 490 | \r |
| 491 | case 0xD: // PTH\r |
| 492 | Pico_mcd->s68k_regs[5] = 0xE;\r |
| 493 | Pico_mcd->cdc.PT.B.H = Data;\r |
| 494 | \r |
| 495 | break;\r |
| 496 | \r |
| 497 | case 0xE: // CTRL2\r |
| 498 | Pico_mcd->cdc.CTRL.B.B2 = Data;\r |
| 499 | break;\r |
| 500 | \r |
| 501 | case 0xF: // RESET\r |
| 502 | CDC_Reset();\r |
| 503 | break;\r |
| 504 | }\r |
| 505 | }\r |
| 506 | \r |
| 507 | \r |
| 508 | static int bswapwrite(int a, unsigned short d)\r |
| 509 | {\r |
| 510 | *(unsigned short *)(Pico_mcd->s68k_regs + a) = (d>>8)|(d<<8);\r |
| 511 | return d + (d >> 8);\r |
| 512 | }\r |
| 513 | \r |
| 514 | void CDD_Export_Status(void)\r |
| 515 | {\r |
| 516 | unsigned int csum;\r |
| 517 | \r |
| 518 | csum = bswapwrite( 0x38+0, Pico_mcd->cdd.Status);\r |
| 519 | csum += bswapwrite( 0x38+2, Pico_mcd->cdd.Minute);\r |
| 520 | csum += bswapwrite( 0x38+4, Pico_mcd->cdd.Seconde);\r |
| 521 | csum += bswapwrite( 0x38+6, Pico_mcd->cdd.Frame);\r |
| 522 | Pico_mcd->s68k_regs[0x38+8] = Pico_mcd->cdd.Ext;\r |
| 523 | csum += Pico_mcd->cdd.Ext;\r |
| 524 | Pico_mcd->s68k_regs[0x38+9] = ~csum & 0xf;\r |
| 525 | \r |
| 526 | Pico_mcd->s68k_regs[0x37] &= 3; // CDD.Control\r |
| 527 | \r |
| 528 | if (Pico_mcd->s68k_regs[0x33] & (1<<4))\r |
| 529 | {\r |
| 530 | dprintf("cdd export irq 4");\r |
| 531 | SekInterruptS68k(4);\r |
| 532 | }\r |
| 533 | \r |
| 534 | // cdprintf("CDD exported status\n");\r |
| 535 | cdprintf("out: Status=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X Checksum=%.4X",\r |
| 536 | (Pico_mcd->s68k_regs[0x38+0] << 8) | Pico_mcd->s68k_regs[0x38+1],\r |
| 537 | (Pico_mcd->s68k_regs[0x38+2] << 8) | Pico_mcd->s68k_regs[0x38+3],\r |
| 538 | (Pico_mcd->s68k_regs[0x38+4] << 8) | Pico_mcd->s68k_regs[0x38+5],\r |
| 539 | (Pico_mcd->s68k_regs[0x38+6] << 8) | Pico_mcd->s68k_regs[0x38+7],\r |
| 540 | (Pico_mcd->s68k_regs[0x38+8] << 8) | Pico_mcd->s68k_regs[0x38+9]);\r |
| 541 | }\r |
| 542 | \r |
| 543 | \r |
| 544 | void CDD_Import_Command(void)\r |
| 545 | {\r |
| 546 | // cdprintf("CDD importing command\n");\r |
| 547 | cdprintf("in: Command=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X Checksum=%.4X",\r |
| 548 | (Pico_mcd->s68k_regs[0x38+10+0] << 8) | Pico_mcd->s68k_regs[0x38+10+1],\r |
| 549 | (Pico_mcd->s68k_regs[0x38+10+2] << 8) | Pico_mcd->s68k_regs[0x38+10+3],\r |
| 550 | (Pico_mcd->s68k_regs[0x38+10+4] << 8) | Pico_mcd->s68k_regs[0x38+10+5],\r |
| 551 | (Pico_mcd->s68k_regs[0x38+10+6] << 8) | Pico_mcd->s68k_regs[0x38+10+7],\r |
| 552 | (Pico_mcd->s68k_regs[0x38+10+8] << 8) | Pico_mcd->s68k_regs[0x38+10+9]);\r |
| 553 | \r |
| 554 | switch (Pico_mcd->s68k_regs[0x38+10+0])\r |
| 555 | {\r |
| 556 | case 0x0: // STATUS (?)\r |
| 557 | Get_Status_CDD_c0();\r |
| 558 | break;\r |
| 559 | \r |
| 560 | case 0x1: // STOP ALL (?)\r |
| 561 | Stop_CDD_c1();\r |
| 562 | break;\r |
| 563 | \r |
| 564 | case 0x2: // GET TOC INFORMATIONS\r |
| 565 | switch(Pico_mcd->s68k_regs[0x38+10+3])\r |
| 566 | {\r |
| 567 | case 0x0: // get current position (MSF format)\r |
| 568 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00);\r |
| 569 | Get_Pos_CDD_c20();\r |
| 570 | break;\r |
| 571 | \r |
| 572 | case 0x1: // get elapsed time of current track played/scanned (relative MSF format)\r |
| 573 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 1;\r |
| 574 | Get_Track_Pos_CDD_c21();\r |
| 575 | break;\r |
| 576 | \r |
| 577 | case 0x2: // get current track in RS2-RS3\r |
| 578 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 2;\r |
| 579 | Get_Current_Track_CDD_c22();\r |
| 580 | break;\r |
| 581 | \r |
| 582 | case 0x3: // get total length (MSF format)\r |
| 583 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 3;\r |
| 584 | Get_Total_Lenght_CDD_c23();\r |
| 585 | break;\r |
| 586 | \r |
| 587 | case 0x4: // first & last track number\r |
| 588 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 4;\r |
| 589 | Get_First_Last_Track_CDD_c24();\r |
| 590 | break;\r |
| 591 | \r |
| 592 | case 0x5: // get track addresse (MSF format)\r |
| 593 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 5;\r |
| 594 | Get_Track_Adr_CDD_c25();\r |
| 595 | break;\r |
| 596 | \r |
| 597 | default : // invalid, then we return status\r |
| 598 | Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 0xF;\r |
| 599 | Get_Status_CDD_c0();\r |
| 600 | break;\r |
| 601 | }\r |
| 602 | break;\r |
| 603 | \r |
| 604 | case 0x3: // READ\r |
| 605 | Play_CDD_c3();\r |
| 606 | break;\r |
| 607 | \r |
| 608 | case 0x4: // SEEK\r |
| 609 | Seek_CDD_c4();\r |
| 610 | break;\r |
| 611 | \r |
| 612 | case 0x6: // PAUSE/STOP\r |
| 613 | Pause_CDD_c6();\r |
| 614 | break;\r |
| 615 | \r |
| 616 | case 0x7: // RESUME\r |
| 617 | Resume_CDD_c7();\r |
| 618 | break;\r |
| 619 | \r |
| 620 | case 0x8: // FAST FOWARD\r |
| 621 | Fast_Foward_CDD_c8();\r |
| 622 | break;\r |
| 623 | \r |
| 624 | case 0x9: // FAST REWIND\r |
| 625 | Fast_Rewind_CDD_c9();\r |
| 626 | break;\r |
| 627 | \r |
| 628 | case 0xA: // RECOVER INITIAL STATE (?)\r |
| 629 | CDD_cA();\r |
| 630 | break;\r |
| 631 | \r |
| 632 | case 0xC: // CLOSE TRAY\r |
| 633 | Close_Tray_CDD_cC();\r |
| 634 | break;\r |
| 635 | \r |
| 636 | case 0xD: // OPEN TRAY\r |
| 637 | Open_Tray_CDD_cD();\r |
| 638 | break;\r |
| 639 | \r |
| 640 | default: // UNKNOWN\r |
| 641 | CDD_Def();\r |
| 642 | break;\r |
| 643 | }\r |
| 644 | }\r |
| 645 | \r |