Pico/cd/LC89510.c

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