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