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 \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, sizeof(Pico_mcd->cdc.Buffer));\r
  41 \r
  42         Pico_mcd->cdc.COMIN = 0;\r
  43         Pico_mcd->cdc.IFSTAT = 0xFF;\r
  44         Pico_mcd->cdc.DAC.N = 0;\r
  45         Pico_mcd->cdc.DBC.N = 0;\r
  46         Pico_mcd->cdc.HEAD.N = 0x01000000;\r
  47         Pico_mcd->cdc.PT.N = 0;\r
  48         Pico_mcd->cdc.WA.N = 2352 * 2;\r
  49         Pico_mcd->cdc.STAT.N = 0x00000080;\r
  50         Pico_mcd->cdc.SBOUT = 0;\r
  51         Pico_mcd->cdc.IFCTRL = 0;\r
  52         Pico_mcd->cdc.CTRL.N = 0;\r
  53 \r
  54         Pico_mcd->cdc.Decode_Reg_Read = 0;\r
  55         Pico_mcd->scd.Status_CDC &= ~0x08;\r
  56 }\r
  57 \r
  58 \r
  59 void LC89510_Reset(void)\r
  60 {\r
  61         CDD_Reset();\r
  62         CDC_Reset();\r
  63 \r
  64         // clear DMA_Adr & Stop_Watch\r
  65         memset(Pico_mcd->s68k_regs + 0xA, 0, 4);\r
  66 }\r
  67 \r
  68 \r
  69 void Update_CDC_TRansfer(int which)\r
  70 {\r
  71         unsigned int DMA_Adr, dep, length;\r
  72         unsigned short *dest;\r
  73         unsigned char  *src;\r
  74 \r
  75         if (Pico_mcd->cdc.DBC.N <= (CDC_DMA_SPEED * 2))\r
  76         {\r
  77                 length = (Pico_mcd->cdc.DBC.N + 1) >> 1;\r
  78                 Pico_mcd->scd.Status_CDC &= ~0x08;      // Last transfer\r
  79                 Pico_mcd->s68k_regs[4] |=  0x80;        // End data transfer\r
  80                 Pico_mcd->s68k_regs[4] &= ~0x40;        // no more data ready\r
  81                 Pico_mcd->cdc.IFSTAT |= 0x08;           // No more data transfer in progress\r
  82 \r
  83                 if (Pico_mcd->cdc.IFCTRL & 0x40)        // DTEIEN = Data Trasnfer End Interrupt Enable ?\r
  84                 {\r
  85                         Pico_mcd->cdc.IFSTAT &= ~0x40;\r
  86 \r
  87                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))\r
  88                         {\r
  89                                 dprintf("cdc DTE irq 5");\r
  90                                 SekInterruptS68k(5);\r
  91                         }\r
  92                 }\r
  93         }\r
  94         else length = CDC_DMA_SPEED;\r
  95 \r
  96 \r
  97         // TODO: dst bounds checking?\r
  98         src = Pico_mcd->cdc.Buffer + Pico_mcd->cdc.DAC.N;\r
  99         DMA_Adr = (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB];\r
 100 \r
 101         if (which == 7) // WORD RAM\r
 102         {\r
 103                 if (Pico_mcd->s68k_regs[3] & 4)\r
 104                 {\r
 105                         // test: Final Fight\r
 106                         int bank = !(Pico_mcd->s68k_regs[3]&1);\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                         dest = (unsigned short *) (Pico_mcd->word_ram1M[bank] + dep);\r
 112 \r
 113                         memcpy16bswap(dest, src, length);\r
 114 \r
 115                         { // debug\r
 116                                 unsigned char *b1 = Pico_mcd->word_ram1M[bank] + dep;\r
 117                                 unsigned char *b2 = (unsigned char *)(dest+length) - 8;\r
 118                                 dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
 119                                         b1[0], b1[1], b1[4], b1[5], b2[0], b2[1], b2[4], b2[5]);\r
 120                         }\r
 121                 }\r
 122                 else\r
 123                 {\r
 124                         dep = ((DMA_Adr & 0x7FFF) << 3);\r
 125                         cdprintf("CD DMA # %04x -> word_ram2M # %06x, len=%i",\r
 126                                         Pico_mcd->cdc.DAC.N, dep, length);\r
 127                         dest = (unsigned short *) (Pico_mcd->word_ram2M + dep);\r
 128 \r
 129                         memcpy16bswap(dest, src, length);\r
 130 \r
 131                         { // debug\r
 132                                 unsigned char *b1 = Pico_mcd->word_ram2M + dep;\r
 133                                 unsigned char *b2 = (unsigned char *)(dest+length) - 4;\r
 134                                 dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
 135                                         b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r
 136                         }\r
 137                 }\r
 138         }\r
 139         else if (which == 4) // PCM RAM (check: popful Mail)\r
 140         {\r
 141                 dep = (DMA_Adr & 0x03FF) << 2;\r
 142                 dprintf("CD DMA # %04x -> PCM[%i] # %04x, len=%i",\r
 143                         Pico_mcd->cdc.DAC.N, Pico_mcd->pcm.bank, dep, length);\r
 144                 dest = (unsigned short *) (Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank] + dep);\r
 145 \r
 146                 if (Pico_mcd->cdc.DAC.N & 1) /* unaligned src? */\r
 147                         memcpy(dest, src, length*2);\r
 148                 else    memcpy16(dest, (unsigned short *) src, length);\r
 149         }\r
 150         else if (which == 5) // PRG RAM\r
 151         {\r
 152                 dep = DMA_Adr << 3;\r
 153                 dest = (unsigned short *) (Pico_mcd->prg_ram + dep);\r
 154                 cdprintf("CD DMA # %04x -> prg_ram # %06x, len=%i",\r
 155                                 Pico_mcd->cdc.DAC.N, dep, length);\r
 156 \r
 157                 memcpy16bswap(dest, src, length);\r
 158 \r
 159                 { // debug\r
 160                         unsigned char *b1 = Pico_mcd->prg_ram + dep;\r
 161                         unsigned char *b2 = (unsigned char *)(dest+length) - 4;\r
 162                         dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
 163                                 b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r
 164                 }\r
 165         }\r
 166 \r
 167         length <<= 1;\r
 168         Pico_mcd->cdc.DAC.N = (Pico_mcd->cdc.DAC.N + length) & 0xFFFF;\r
 169         if (Pico_mcd->scd.Status_CDC & 0x08) Pico_mcd->cdc.DBC.N -= length;\r
 170         else Pico_mcd->cdc.DBC.N = 0;\r
 171 \r
 172         // update DMA_Adr\r
 173         length >>= 2;\r
 174         if (which != 4) length >>= 1;\r
 175         DMA_Adr += length;\r
 176         Pico_mcd->s68k_regs[0xA] = DMA_Adr >> 8;\r
 177         Pico_mcd->s68k_regs[0xB] = DMA_Adr;\r
 178 }\r
 179 \r
 180 \r
 181 unsigned short Read_CDC_Host(int is_sub)\r
 182 {\r
 183         int addr;\r
 184 \r
 185         if (!(Pico_mcd->scd.Status_CDC & 0x08))\r
 186         {\r
 187                 // Transfer data disabled\r
 188                 cdprintf("Read_CDC_Host FIXME: Transfer data disabled");\r
 189                 return 0;\r
 190         }\r
 191 \r
 192         if ((is_sub && (Pico_mcd->s68k_regs[4] & 7) != 3) ||\r
 193                 (!is_sub && (Pico_mcd->s68k_regs[4] & 7) != 2))\r
 194         {\r
 195                 // Wrong setting\r
 196                 cdprintf("Read_CDC_Host FIXME: Wrong setting");\r
 197                 return 0;\r
 198         }\r
 199 \r
 200         Pico_mcd->cdc.DBC.N -= 2;\r
 201 \r
 202         if (Pico_mcd->cdc.DBC.N <= 0)\r
 203         {\r
 204                 Pico_mcd->cdc.DBC.N = 0;\r
 205                 Pico_mcd->scd.Status_CDC &= ~0x08;              // Last transfer\r
 206                 Pico_mcd->s68k_regs[4] |=  0x80;                // End data transfer\r
 207                 Pico_mcd->s68k_regs[4] &= ~0x40;                // no more data ready\r
 208                 Pico_mcd->cdc.IFSTAT |= 0x08;                   // No more data transfer in progress\r
 209 \r
 210                 if (Pico_mcd->cdc.IFCTRL & 0x40)                // DTEIEN = Data Transfer End Interrupt Enable ?\r
 211                 {\r
 212                         Pico_mcd->cdc.IFSTAT &= ~0x40;\r
 213 \r
 214                         if (Pico_mcd->s68k_regs[0x33]&(1<<5)) {\r
 215                                 dprintf("m68k: s68k irq 5");\r
 216                                 SekInterruptS68k(5);\r
 217                         }\r
 218 \r
 219                         cdprintf("CDC - DTE interrupt");\r
 220                 }\r
 221         }\r
 222 \r
 223         addr = Pico_mcd->cdc.DAC.N;\r
 224         Pico_mcd->cdc.DAC.N += 2;\r
 225 \r
 226         cdprintf("Read_CDC_Host sub=%i d=%04x dac=%04x dbc=%04x", is_sub,\r
 227                 (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1], Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N);\r
 228 \r
 229         return (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1];\r
 230 \r
 231 #if 0\r
 232         __asm\r
 233         {\r
 234                 mov esi, Pico_mcd->cdc.DAC.N\r
 235                 lea ebx, Pico_mcd->cdc.Buffer\r
 236 //                              and esi, 0x3FFF\r
 237                 mov ax, [ebx + esi]\r
 238                 add esi, 2\r
 239                 rol ax, 8\r
 240                 mov Pico_mcd->cdc.DAC.N, esi\r
 241                 mov val, ax\r
 242         }\r
 243 #endif\r
 244 }\r
 245 \r
 246 \r
 247 void CDC_Update_Header(void)\r
 248 {\r
 249         if (Pico_mcd->cdc.CTRL.B.B1 & 0x01)             // Sub-Header wanted ?\r
 250         {\r
 251                 Pico_mcd->cdc.HEAD.B.B0 = 0;\r
 252                 Pico_mcd->cdc.HEAD.B.B1 = 0;\r
 253                 Pico_mcd->cdc.HEAD.B.B2 = 0;\r
 254                 Pico_mcd->cdc.HEAD.B.B3 = 0;\r
 255         }\r
 256         else\r
 257         {\r
 258                 _msf MSF;\r
 259 \r
 260                 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);\r
 261 \r
 262                 Pico_mcd->cdc.HEAD.B.B0 = INT_TO_BCDB(MSF.M);\r
 263                 Pico_mcd->cdc.HEAD.B.B1 = INT_TO_BCDB(MSF.S);\r
 264                 Pico_mcd->cdc.HEAD.B.B2 = INT_TO_BCDB(MSF.F);\r
 265                 Pico_mcd->cdc.HEAD.B.B3 = 0x01;\r
 266         }\r
 267 }\r
 268 \r
 269 \r
 270 unsigned char CDC_Read_Reg(void)\r
 271 {\r
 272         unsigned char ret;\r
 273 \r
 274         switch(Pico_mcd->s68k_regs[5] & 0xF)\r
 275         {\r
 276                 case 0x0: // COMIN\r
 277                         cdprintf("CDC read reg 00 = %.2X", Pico_mcd->cdc.COMIN);\r
 278 \r
 279                         Pico_mcd->s68k_regs[5] = 0x1;\r
 280                         return Pico_mcd->cdc.COMIN;\r
 281 \r
 282                 case 0x1: // IFSTAT\r
 283                         cdprintf("CDC read reg 01 = %.2X", Pico_mcd->cdc.IFSTAT);\r
 284 \r
 285                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 1);              // Reg 1 (decoding)\r
 286                         Pico_mcd->s68k_regs[5] = 0x2;\r
 287                         return Pico_mcd->cdc.IFSTAT;\r
 288 \r
 289                 case 0x2: // DBCL\r
 290                         cdprintf("CDC read reg 02 = %.2X", Pico_mcd->cdc.DBC.B.L);\r
 291 \r
 292                         Pico_mcd->s68k_regs[5] = 0x3;\r
 293                         return Pico_mcd->cdc.DBC.B.L;\r
 294 \r
 295                 case 0x3: // DBCH\r
 296                         cdprintf("CDC read reg 03 = %.2X", Pico_mcd->cdc.DBC.B.H);\r
 297 \r
 298                         Pico_mcd->s68k_regs[5] = 0x4;\r
 299                         return Pico_mcd->cdc.DBC.B.H;\r
 300 \r
 301                 case 0x4: // HEAD0\r
 302                         cdprintf("CDC read reg 04 = %.2X", Pico_mcd->cdc.HEAD.B.B0);\r
 303 \r
 304                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 4);              // Reg 4 (decoding)\r
 305                         Pico_mcd->s68k_regs[5] = 0x5;\r
 306                         return Pico_mcd->cdc.HEAD.B.B0;\r
 307 \r
 308                 case 0x5: // HEAD1\r
 309                         cdprintf("CDC read reg 05 = %.2X", Pico_mcd->cdc.HEAD.B.B1);\r
 310 \r
 311                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 5);              // Reg 5 (decoding)\r
 312                         Pico_mcd->s68k_regs[5] = 0x6;\r
 313                         return Pico_mcd->cdc.HEAD.B.B1;\r
 314 \r
 315                 case 0x6: // HEAD2\r
 316                         cdprintf("CDC read reg 06 = %.2X", Pico_mcd->cdc.HEAD.B.B2);\r
 317 \r
 318                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 6);              // Reg 6 (decoding)\r
 319                         Pico_mcd->s68k_regs[5] = 0x7;\r
 320                         return Pico_mcd->cdc.HEAD.B.B2;\r
 321 \r
 322                 case 0x7: // HEAD3\r
 323                         cdprintf("CDC read reg 07 = %.2X", Pico_mcd->cdc.HEAD.B.B3);\r
 324 \r
 325                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 7);              // Reg 7 (decoding)\r
 326                         Pico_mcd->s68k_regs[5] = 0x8;\r
 327                         return Pico_mcd->cdc.HEAD.B.B3;\r
 328 \r
 329                 case 0x8: // PTL\r
 330                         cdprintf("CDC read reg 08 = %.2X", Pico_mcd->cdc.PT.B.L);\r
 331 \r
 332                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 8);              // Reg 8 (decoding)\r
 333                         Pico_mcd->s68k_regs[5] = 0x9;\r
 334                         return Pico_mcd->cdc.PT.B.L;\r
 335 \r
 336                 case 0x9: // PTH\r
 337                         cdprintf("CDC read reg 09 = %.2X", Pico_mcd->cdc.PT.B.H);\r
 338 \r
 339                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 9);              // Reg 9 (decoding)\r
 340                         Pico_mcd->s68k_regs[5] = 0xA;\r
 341                         return Pico_mcd->cdc.PT.B.H;\r
 342 \r
 343                 case 0xA: // WAL\r
 344                         cdprintf("CDC read reg 10 = %.2X", Pico_mcd->cdc.WA.B.L);\r
 345 \r
 346                         Pico_mcd->s68k_regs[5] = 0xB;\r
 347                         return Pico_mcd->cdc.WA.B.L;\r
 348 \r
 349                 case 0xB: // WAH\r
 350                         cdprintf("CDC read reg 11 = %.2X", Pico_mcd->cdc.WA.B.H);\r
 351 \r
 352                         Pico_mcd->s68k_regs[5] = 0xC;\r
 353                         return Pico_mcd->cdc.WA.B.H;\r
 354 \r
 355                 case 0xC: // STAT0\r
 356                         cdprintf("CDC read reg 12 = %.2X", Pico_mcd->cdc.STAT.B.B0);\r
 357 \r
 358                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 12);             // Reg 12 (decoding)\r
 359                         Pico_mcd->s68k_regs[5] = 0xD;\r
 360                         return Pico_mcd->cdc.STAT.B.B0;\r
 361 \r
 362                 case 0xD: // STAT1\r
 363                         cdprintf("CDC read reg 13 = %.2X", Pico_mcd->cdc.STAT.B.B1);\r
 364 \r
 365                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 13);             // Reg 13 (decoding)\r
 366                         Pico_mcd->s68k_regs[5] = 0xE;\r
 367                         return Pico_mcd->cdc.STAT.B.B1;\r
 368 \r
 369                 case 0xE: // STAT2\r
 370                         cdprintf("CDC read reg 14 = %.2X", Pico_mcd->cdc.STAT.B.B2);\r
 371 \r
 372                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 14);             // Reg 14 (decoding)\r
 373                         Pico_mcd->s68k_regs[5] = 0xF;\r
 374                         return Pico_mcd->cdc.STAT.B.B2;\r
 375 \r
 376                 case 0xF: // STAT3\r
 377                         cdprintf("CDC read reg 15 = %.2X", Pico_mcd->cdc.STAT.B.B3);\r
 378 \r
 379                         ret = Pico_mcd->cdc.STAT.B.B3;\r
 380                         Pico_mcd->cdc.IFSTAT |= 0x20;                   // decoding interrupt flag cleared\r
 381                         if ((Pico_mcd->cdc.CTRL.B.B0 & 0x80) && (Pico_mcd->cdc.IFCTRL & 0x20))\r
 382                         {\r
 383                                 if ((Pico_mcd->cdc.Decode_Reg_Read & 0x73F2) == 0x73F2)\r
 384                                         Pico_mcd->cdc.STAT.B.B3 = 0x80;\r
 385                         }\r
 386                         return ret;\r
 387         }\r
 388 \r
 389         return 0;\r
 390 }\r
 391 \r
 392 \r
 393 void CDC_Write_Reg(unsigned char Data)\r
 394 {\r
 395         cdprintf("CDC write reg%02d = %.2X", Pico_mcd->s68k_regs[5] & 0xF, Data);\r
 396 \r
 397         switch (Pico_mcd->s68k_regs[5] & 0xF)\r
 398         {\r
 399                 case 0x0: // SBOUT\r
 400                         Pico_mcd->s68k_regs[5] = 0x1;\r
 401                         Pico_mcd->cdc.SBOUT = Data;\r
 402 \r
 403                         break;\r
 404 \r
 405                 case 0x1: // IFCTRL\r
 406                         Pico_mcd->s68k_regs[5] = 0x2;\r
 407                         Pico_mcd->cdc.IFCTRL = Data;\r
 408 \r
 409                         if ((Pico_mcd->cdc.IFCTRL & 0x02) == 0)         // Stop data transfer\r
 410                         {\r
 411                                 Pico_mcd->cdc.DBC.N = 0;\r
 412                                 Pico_mcd->scd.Status_CDC &= ~0x08;\r
 413                                 Pico_mcd->cdc.IFSTAT |= 0x08;           // No more data transfer in progress\r
 414                         }\r
 415                         break;\r
 416 \r
 417                 case 0x2: // DBCL\r
 418                         Pico_mcd->s68k_regs[5] = 0x3;\r
 419                         Pico_mcd->cdc.DBC.B.L = Data;\r
 420 \r
 421                         break;\r
 422 \r
 423                 case 0x3: // DBCH\r
 424                         Pico_mcd->s68k_regs[5] = 0x4;\r
 425                         Pico_mcd->cdc.DBC.B.H = Data;\r
 426 \r
 427                         break;\r
 428 \r
 429                 case 0x4: // DACL\r
 430                         Pico_mcd->s68k_regs[5] = 0x5;\r
 431                         Pico_mcd->cdc.DAC.B.L = Data;\r
 432 \r
 433                         break;\r
 434 \r
 435                 case 0x5: // DACH\r
 436                         Pico_mcd->s68k_regs[5] = 0x6;\r
 437                         Pico_mcd->cdc.DAC.B.H = Data;\r
 438 \r
 439                         break;\r
 440 \r
 441                 case 0x6: // DTTRG\r
 442                         if (Pico_mcd->cdc.IFCTRL & 0x02)                // Data transfer enable ?\r
 443                         {\r
 444                                 Pico_mcd->cdc.IFSTAT &= ~0x08;          // Data transfer in progress\r
 445                                 Pico_mcd->scd.Status_CDC |= 0x08;       // Data transfer in progress\r
 446                                 Pico_mcd->s68k_regs[4] &= 0x7F;         // A data transfer start\r
 447 \r
 448                                 cdprintf("************** Starting Data Transfer ***********");\r
 449                                 cdprintf("RS0 = %.4X  DAC = %.4X  DBC = %.4X  DMA adr = %.4X\n\n", Pico_mcd->s68k_regs[4]<<8,\r
 450                                         Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N, (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB]);\r
 451                         }\r
 452                         break;\r
 453 \r
 454                 case 0x7: // DTACK\r
 455                         Pico_mcd->cdc.IFSTAT |= 0x40;                   // end data transfer interrupt flag cleared\r
 456                         break;\r
 457 \r
 458                 case 0x8: // WAL\r
 459                         Pico_mcd->s68k_regs[5] = 0x9;\r
 460                         Pico_mcd->cdc.WA.B.L = Data;\r
 461 \r
 462                         break;\r
 463 \r
 464                 case 0x9: // WAH\r
 465                         Pico_mcd->s68k_regs[5] = 0xA;\r
 466                         Pico_mcd->cdc.WA.B.H = Data;\r
 467 \r
 468                         break;\r
 469 \r
 470                 case 0xA: // CTRL0\r
 471                         Pico_mcd->s68k_regs[5] = 0xB;\r
 472                         Pico_mcd->cdc.CTRL.B.B0 = Data;\r
 473 \r
 474                         break;\r
 475 \r
 476                 case 0xB: // CTRL1\r
 477                         Pico_mcd->s68k_regs[5] = 0xC;\r
 478                         Pico_mcd->cdc.CTRL.B.B1 = Data;\r
 479 \r
 480                         break;\r
 481 \r
 482                 case 0xC: // PTL\r
 483                         Pico_mcd->s68k_regs[5] = 0xD;\r
 484                         Pico_mcd->cdc.PT.B.L = Data;\r
 485 \r
 486                         break;\r
 487 \r
 488                 case 0xD: // PTH\r
 489                         Pico_mcd->s68k_regs[5] = 0xE;\r
 490                         Pico_mcd->cdc.PT.B.H = Data;\r
 491 \r
 492                         break;\r
 493 \r
 494                 case 0xE: // CTRL2\r
 495                         Pico_mcd->cdc.CTRL.B.B2 = Data;\r
 496                         break;\r
 497 \r
 498                 case 0xF: // RESET\r
 499                         CDC_Reset();\r
 500                         break;\r
 501         }\r
 502 }\r
 503 \r
 504 \r
 505 static int bswapwrite(int a, unsigned short d)\r
 506 {\r
 507         *(unsigned short *)(Pico_mcd->s68k_regs + a) = (d>>8)|(d<<8);\r
 508         return d + (d >> 8);\r
 509 }\r
 510 \r
 511 void CDD_Export_Status(void)\r
 512 {\r
 513         unsigned int csum;\r
 514 \r
 515         csum  = bswapwrite( 0x38+0, Pico_mcd->cdd.Status);\r
 516         csum += bswapwrite( 0x38+2, Pico_mcd->cdd.Minute);\r
 517         csum += bswapwrite( 0x38+4, Pico_mcd->cdd.Seconde);\r
 518         csum += bswapwrite( 0x38+6, Pico_mcd->cdd.Frame);\r
 519         Pico_mcd->s68k_regs[0x38+8] = Pico_mcd->cdd.Ext;\r
 520         csum += Pico_mcd->cdd.Ext;\r
 521         Pico_mcd->s68k_regs[0x38+9] = ~csum & 0xf;\r
 522 \r
 523         Pico_mcd->s68k_regs[0x37] &= 3; // CDD.Control\r
 524 \r
 525         if (Pico_mcd->s68k_regs[0x33] & (1<<4))\r
 526         {\r
 527                 dprintf("cdd export irq 4");\r
 528                 SekInterruptS68k(4);\r
 529         }\r
 530 \r
 531 //      cdprintf("CDD exported status\n");\r
 532         cdprintf("out:  Status=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X  Checksum=%.4X",\r
 533                 (Pico_mcd->s68k_regs[0x38+0] << 8) | Pico_mcd->s68k_regs[0x38+1],\r
 534                 (Pico_mcd->s68k_regs[0x38+2] << 8) | Pico_mcd->s68k_regs[0x38+3],\r
 535                 (Pico_mcd->s68k_regs[0x38+4] << 8) | Pico_mcd->s68k_regs[0x38+5],\r
 536                 (Pico_mcd->s68k_regs[0x38+6] << 8) | Pico_mcd->s68k_regs[0x38+7],\r
 537                 (Pico_mcd->s68k_regs[0x38+8] << 8) | Pico_mcd->s68k_regs[0x38+9]);\r
 538 }\r
 539 \r
 540 \r
 541 void CDD_Import_Command(void)\r
 542 {\r
 543 //      cdprintf("CDD importing command\n");\r
 544         cdprintf("in:  Command=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X  Checksum=%.4X",\r
 545                 (Pico_mcd->s68k_regs[0x38+10+0] << 8) | Pico_mcd->s68k_regs[0x38+10+1],\r
 546                 (Pico_mcd->s68k_regs[0x38+10+2] << 8) | Pico_mcd->s68k_regs[0x38+10+3],\r
 547                 (Pico_mcd->s68k_regs[0x38+10+4] << 8) | Pico_mcd->s68k_regs[0x38+10+5],\r
 548                 (Pico_mcd->s68k_regs[0x38+10+6] << 8) | Pico_mcd->s68k_regs[0x38+10+7],\r
 549                 (Pico_mcd->s68k_regs[0x38+10+8] << 8) | Pico_mcd->s68k_regs[0x38+10+9]);\r
 550 \r
 551         switch (Pico_mcd->s68k_regs[0x38+10+0])\r
 552         {\r
 553                 case 0x0:       // STATUS (?)\r
 554                         Get_Status_CDD_c0();\r
 555                         break;\r
 556 \r
 557                 case 0x1:       // STOP ALL (?)\r
 558                         Stop_CDD_c1();\r
 559                         break;\r
 560 \r
 561                 case 0x2:       // GET TOC INFORMATIONS\r
 562                         switch(Pico_mcd->s68k_regs[0x38+10+3])\r
 563                         {\r
 564                                 case 0x0:       // get current position (MSF format)\r
 565                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00);\r
 566                                         Get_Pos_CDD_c20();\r
 567                                         break;\r
 568 \r
 569                                 case 0x1:       // get elapsed time of current track played/scanned (relative MSF format)\r
 570                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 1;\r
 571                                         Get_Track_Pos_CDD_c21();\r
 572                                         break;\r
 573 \r
 574                                 case 0x2:       // get current track in RS2-RS3\r
 575                                         Pico_mcd->cdd.Status =  (Pico_mcd->cdd.Status & 0xFF00) | 2;\r
 576                                         Get_Current_Track_CDD_c22();\r
 577                                         break;\r
 578 \r
 579                                 case 0x3:       // get total length (MSF format)\r
 580                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 3;\r
 581                                         Get_Total_Lenght_CDD_c23();\r
 582                                         break;\r
 583 \r
 584                                 case 0x4:       // first & last track number\r
 585                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 4;\r
 586                                         Get_First_Last_Track_CDD_c24();\r
 587                                         break;\r
 588 \r
 589                                 case 0x5:       // get track addresse (MSF format)\r
 590                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 5;\r
 591                                         Get_Track_Adr_CDD_c25();\r
 592                                         break;\r
 593 \r
 594                                 default :       // invalid, then we return status\r
 595                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 0xF;\r
 596                                         Get_Status_CDD_c0();\r
 597                                         break;\r
 598                         }\r
 599                         break;\r
 600 \r
 601                 case 0x3:       // READ\r
 602                         Play_CDD_c3();\r
 603                         break;\r
 604 \r
 605                 case 0x4:       // SEEK\r
 606                         Seek_CDD_c4();\r
 607                         break;\r
 608 \r
 609                 case 0x6:       // PAUSE/STOP\r
 610                         Pause_CDD_c6();\r
 611                         break;\r
 612 \r
 613                 case 0x7:       // RESUME\r
 614                         Resume_CDD_c7();\r
 615                         break;\r
 616 \r
 617                 case 0x8:       // FAST FOWARD\r
 618                         Fast_Foward_CDD_c8();\r
 619                         break;\r
 620 \r
 621                 case 0x9:       // FAST REWIND\r
 622                         Fast_Rewind_CDD_c9();\r
 623                         break;\r
 624 \r
 625                 case 0xA:       // RECOVER INITIAL STATE (?)\r
 626                         CDD_cA();\r
 627                         break;\r
 628 \r
 629                 case 0xC:       // CLOSE TRAY\r
 630                         Close_Tray_CDD_cC();\r
 631                         break;\r
 632 \r
 633                 case 0xD:       // OPEN TRAY\r
 634                         Open_Tray_CDD_cD();\r
 635                         break;\r
 636 \r
 637                 default:        // UNKNOWN\r
 638                         CDD_Def();\r
 639                         break;\r
 640         }\r
 641 }\r
 642 \r