Pico/cd/LC89510.c

   1 /***********************************************************\r
   2  *                                                         *\r
   3  * This source was 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 PICO_INTERNAL 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 PICO_INTERNAL 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 PICO_INTERNAL_ASM 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 \r
 232 \r
 233 PICO_INTERNAL void CDC_Update_Header(void)\r
 234 {\r
 235         if (Pico_mcd->cdc.CTRL.B.B1 & 0x01)             // Sub-Header wanted ?\r
 236         {\r
 237                 Pico_mcd->cdc.HEAD.B.B0 = 0;\r
 238                 Pico_mcd->cdc.HEAD.B.B1 = 0;\r
 239                 Pico_mcd->cdc.HEAD.B.B2 = 0;\r
 240                 Pico_mcd->cdc.HEAD.B.B3 = 0;\r
 241         }\r
 242         else\r
 243         {\r
 244                 _msf MSF;\r
 245 \r
 246                 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);\r
 247 \r
 248                 Pico_mcd->cdc.HEAD.B.B0 = INT_TO_BCDB(MSF.M);\r
 249                 Pico_mcd->cdc.HEAD.B.B1 = INT_TO_BCDB(MSF.S);\r
 250                 Pico_mcd->cdc.HEAD.B.B2 = INT_TO_BCDB(MSF.F);\r
 251                 Pico_mcd->cdc.HEAD.B.B3 = 0x01;\r
 252         }\r
 253 }\r
 254 \r
 255 \r
 256 PICO_INTERNAL unsigned char CDC_Read_Reg(void)\r
 257 {\r
 258         unsigned char ret;\r
 259 \r
 260         switch(Pico_mcd->s68k_regs[5] & 0xF)\r
 261         {\r
 262                 case 0x0: // COMIN\r
 263                         cdprintf("CDC read reg 00 = %.2X", Pico_mcd->cdc.COMIN);\r
 264 \r
 265                         Pico_mcd->s68k_regs[5] = 0x1;\r
 266                         return Pico_mcd->cdc.COMIN;\r
 267 \r
 268                 case 0x1: // IFSTAT\r
 269                         cdprintf("CDC read reg 01 = %.2X", Pico_mcd->cdc.IFSTAT);\r
 270 \r
 271                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 1);              // Reg 1 (decoding)\r
 272                         Pico_mcd->s68k_regs[5] = 0x2;\r
 273                         return Pico_mcd->cdc.IFSTAT;\r
 274 \r
 275                 case 0x2: // DBCL\r
 276                         cdprintf("CDC read reg 02 = %.2X", Pico_mcd->cdc.DBC.B.L);\r
 277 \r
 278                         Pico_mcd->s68k_regs[5] = 0x3;\r
 279                         return Pico_mcd->cdc.DBC.B.L;\r
 280 \r
 281                 case 0x3: // DBCH\r
 282                         cdprintf("CDC read reg 03 = %.2X", Pico_mcd->cdc.DBC.B.H);\r
 283 \r
 284                         Pico_mcd->s68k_regs[5] = 0x4;\r
 285                         return Pico_mcd->cdc.DBC.B.H;\r
 286 \r
 287                 case 0x4: // HEAD0\r
 288                         cdprintf("CDC read reg 04 = %.2X", Pico_mcd->cdc.HEAD.B.B0);\r
 289 \r
 290                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 4);              // Reg 4 (decoding)\r
 291                         Pico_mcd->s68k_regs[5] = 0x5;\r
 292                         return Pico_mcd->cdc.HEAD.B.B0;\r
 293 \r
 294                 case 0x5: // HEAD1\r
 295                         cdprintf("CDC read reg 05 = %.2X", Pico_mcd->cdc.HEAD.B.B1);\r
 296 \r
 297                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 5);              // Reg 5 (decoding)\r
 298                         Pico_mcd->s68k_regs[5] = 0x6;\r
 299                         return Pico_mcd->cdc.HEAD.B.B1;\r
 300 \r
 301                 case 0x6: // HEAD2\r
 302                         cdprintf("CDC read reg 06 = %.2X", Pico_mcd->cdc.HEAD.B.B2);\r
 303 \r
 304                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 6);              // Reg 6 (decoding)\r
 305                         Pico_mcd->s68k_regs[5] = 0x7;\r
 306                         return Pico_mcd->cdc.HEAD.B.B2;\r
 307 \r
 308                 case 0x7: // HEAD3\r
 309                         cdprintf("CDC read reg 07 = %.2X", Pico_mcd->cdc.HEAD.B.B3);\r
 310 \r
 311                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 7);              // Reg 7 (decoding)\r
 312                         Pico_mcd->s68k_regs[5] = 0x8;\r
 313                         return Pico_mcd->cdc.HEAD.B.B3;\r
 314 \r
 315                 case 0x8: // PTL\r
 316                         cdprintf("CDC read reg 08 = %.2X", Pico_mcd->cdc.PT.B.L);\r
 317 \r
 318                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 8);              // Reg 8 (decoding)\r
 319                         Pico_mcd->s68k_regs[5] = 0x9;\r
 320                         return Pico_mcd->cdc.PT.B.L;\r
 321 \r
 322                 case 0x9: // PTH\r
 323                         cdprintf("CDC read reg 09 = %.2X", Pico_mcd->cdc.PT.B.H);\r
 324 \r
 325                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 9);              // Reg 9 (decoding)\r
 326                         Pico_mcd->s68k_regs[5] = 0xA;\r
 327                         return Pico_mcd->cdc.PT.B.H;\r
 328 \r
 329                 case 0xA: // WAL\r
 330                         cdprintf("CDC read reg 10 = %.2X", Pico_mcd->cdc.WA.B.L);\r
 331 \r
 332                         Pico_mcd->s68k_regs[5] = 0xB;\r
 333                         return Pico_mcd->cdc.WA.B.L;\r
 334 \r
 335                 case 0xB: // WAH\r
 336                         cdprintf("CDC read reg 11 = %.2X", Pico_mcd->cdc.WA.B.H);\r
 337 \r
 338                         Pico_mcd->s68k_regs[5] = 0xC;\r
 339                         return Pico_mcd->cdc.WA.B.H;\r
 340 \r
 341                 case 0xC: // STAT0\r
 342                         cdprintf("CDC read reg 12 = %.2X", Pico_mcd->cdc.STAT.B.B0);\r
 343 \r
 344                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 12);             // Reg 12 (decoding)\r
 345                         Pico_mcd->s68k_regs[5] = 0xD;\r
 346                         return Pico_mcd->cdc.STAT.B.B0;\r
 347 \r
 348                 case 0xD: // STAT1\r
 349                         cdprintf("CDC read reg 13 = %.2X", Pico_mcd->cdc.STAT.B.B1);\r
 350 \r
 351                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 13);             // Reg 13 (decoding)\r
 352                         Pico_mcd->s68k_regs[5] = 0xE;\r
 353                         return Pico_mcd->cdc.STAT.B.B1;\r
 354 \r
 355                 case 0xE: // STAT2\r
 356                         cdprintf("CDC read reg 14 = %.2X", Pico_mcd->cdc.STAT.B.B2);\r
 357 \r
 358                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 14);             // Reg 14 (decoding)\r
 359                         Pico_mcd->s68k_regs[5] = 0xF;\r
 360                         return Pico_mcd->cdc.STAT.B.B2;\r
 361 \r
 362                 case 0xF: // STAT3\r
 363                         cdprintf("CDC read reg 15 = %.2X", Pico_mcd->cdc.STAT.B.B3);\r
 364 \r
 365                         ret = Pico_mcd->cdc.STAT.B.B3;\r
 366                         Pico_mcd->cdc.IFSTAT |= 0x20;                   // decoding interrupt flag cleared\r
 367                         if ((Pico_mcd->cdc.CTRL.B.B0 & 0x80) && (Pico_mcd->cdc.IFCTRL & 0x20))\r
 368                         {\r
 369                                 if ((Pico_mcd->cdc.Decode_Reg_Read & 0x73F2) == 0x73F2)\r
 370                                         Pico_mcd->cdc.STAT.B.B3 = 0x80;\r
 371                         }\r
 372                         return ret;\r
 373         }\r
 374 \r
 375         return 0;\r
 376 }\r
 377 \r
 378 \r
 379 PICO_INTERNAL void CDC_Write_Reg(unsigned char Data)\r
 380 {\r
 381         cdprintf("CDC write reg%02d = %.2X", Pico_mcd->s68k_regs[5] & 0xF, Data);\r
 382 \r
 383         switch (Pico_mcd->s68k_regs[5] & 0xF)\r
 384         {\r
 385                 case 0x0: // SBOUT\r
 386                         Pico_mcd->s68k_regs[5] = 0x1;\r
 387                         Pico_mcd->cdc.SBOUT = Data;\r
 388 \r
 389                         break;\r
 390 \r
 391                 case 0x1: // IFCTRL\r
 392                         Pico_mcd->s68k_regs[5] = 0x2;\r
 393                         Pico_mcd->cdc.IFCTRL = Data;\r
 394 \r
 395                         if ((Pico_mcd->cdc.IFCTRL & 0x02) == 0)         // Stop data transfer\r
 396                         {\r
 397                                 Pico_mcd->cdc.DBC.N = 0;\r
 398                                 Pico_mcd->scd.Status_CDC &= ~0x08;\r
 399                                 Pico_mcd->cdc.IFSTAT |= 0x08;           // No more data transfer in progress\r
 400                         }\r
 401                         break;\r
 402 \r
 403                 case 0x2: // DBCL\r
 404                         Pico_mcd->s68k_regs[5] = 0x3;\r
 405                         Pico_mcd->cdc.DBC.B.L = Data;\r
 406 \r
 407                         break;\r
 408 \r
 409                 case 0x3: // DBCH\r
 410                         Pico_mcd->s68k_regs[5] = 0x4;\r
 411                         Pico_mcd->cdc.DBC.B.H = Data;\r
 412 \r
 413                         break;\r
 414 \r
 415                 case 0x4: // DACL\r
 416                         Pico_mcd->s68k_regs[5] = 0x5;\r
 417                         Pico_mcd->cdc.DAC.B.L = Data;\r
 418 \r
 419                         break;\r
 420 \r
 421                 case 0x5: // DACH\r
 422                         Pico_mcd->s68k_regs[5] = 0x6;\r
 423                         Pico_mcd->cdc.DAC.B.H = Data;\r
 424 \r
 425                         break;\r
 426 \r
 427                 case 0x6: // DTTRG\r
 428                         if (Pico_mcd->cdc.IFCTRL & 0x02)                // Data transfer enable ?\r
 429                         {\r
 430                                 Pico_mcd->cdc.IFSTAT &= ~0x08;          // Data transfer in progress\r
 431                                 Pico_mcd->scd.Status_CDC |= 0x08;       // Data transfer in progress\r
 432                                 Pico_mcd->s68k_regs[4] &= 0x7F;         // A data transfer start\r
 433 \r
 434                                 cdprintf("************** Starting Data Transfer ***********");\r
 435                                 cdprintf("RS0 = %.4X  DAC = %.4X  DBC = %.4X  DMA adr = %.4X\n\n", Pico_mcd->s68k_regs[4]<<8,\r
 436                                         Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N, (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB]);\r
 437                         }\r
 438                         break;\r
 439 \r
 440                 case 0x7: // DTACK\r
 441                         Pico_mcd->cdc.IFSTAT |= 0x40;                   // end data transfer interrupt flag cleared\r
 442                         break;\r
 443 \r
 444                 case 0x8: // WAL\r
 445                         Pico_mcd->s68k_regs[5] = 0x9;\r
 446                         Pico_mcd->cdc.WA.B.L = Data;\r
 447 \r
 448                         break;\r
 449 \r
 450                 case 0x9: // WAH\r
 451                         Pico_mcd->s68k_regs[5] = 0xA;\r
 452                         Pico_mcd->cdc.WA.B.H = Data;\r
 453 \r
 454                         break;\r
 455 \r
 456                 case 0xA: // CTRL0\r
 457                         Pico_mcd->s68k_regs[5] = 0xB;\r
 458                         Pico_mcd->cdc.CTRL.B.B0 = Data;\r
 459 \r
 460                         break;\r
 461 \r
 462                 case 0xB: // CTRL1\r
 463                         Pico_mcd->s68k_regs[5] = 0xC;\r
 464                         Pico_mcd->cdc.CTRL.B.B1 = Data;\r
 465 \r
 466                         break;\r
 467 \r
 468                 case 0xC: // PTL\r
 469                         Pico_mcd->s68k_regs[5] = 0xD;\r
 470                         Pico_mcd->cdc.PT.B.L = Data;\r
 471 \r
 472                         break;\r
 473 \r
 474                 case 0xD: // PTH\r
 475                         Pico_mcd->s68k_regs[5] = 0xE;\r
 476                         Pico_mcd->cdc.PT.B.H = Data;\r
 477 \r
 478                         break;\r
 479 \r
 480                 case 0xE: // CTRL2\r
 481                         Pico_mcd->cdc.CTRL.B.B2 = Data;\r
 482                         break;\r
 483 \r
 484                 case 0xF: // RESET\r
 485                         CDC_Reset();\r
 486                         break;\r
 487         }\r
 488 }\r
 489 \r
 490 \r
 491 static int bswapwrite(int a, unsigned short d)\r
 492 {\r
 493         *(unsigned short *)(Pico_mcd->s68k_regs + a) = (d>>8)|(d<<8);\r
 494         return d + (d >> 8);\r
 495 }\r
 496 \r
 497 PICO_INTERNAL void CDD_Export_Status(void)\r
 498 {\r
 499         unsigned int csum;\r
 500 \r
 501         csum  = bswapwrite( 0x38+0, Pico_mcd->cdd.Status);\r
 502         csum += bswapwrite( 0x38+2, Pico_mcd->cdd.Minute);\r
 503         csum += bswapwrite( 0x38+4, Pico_mcd->cdd.Seconde);\r
 504         csum += bswapwrite( 0x38+6, Pico_mcd->cdd.Frame);\r
 505         Pico_mcd->s68k_regs[0x38+8] = Pico_mcd->cdd.Ext;\r
 506         csum += Pico_mcd->cdd.Ext;\r
 507         Pico_mcd->s68k_regs[0x38+9] = ~csum & 0xf;\r
 508 \r
 509         Pico_mcd->s68k_regs[0x37] &= 3; // CDD.Control\r
 510 \r
 511         if (Pico_mcd->s68k_regs[0x33] & (1<<4))\r
 512         {\r
 513                 dprintf("cdd export irq 4");\r
 514                 SekInterruptS68k(4);\r
 515         }\r
 516 \r
 517 //      cdprintf("CDD exported status\n");\r
 518         cdprintf("out:  Status=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X  Checksum=%.4X",\r
 519                 (Pico_mcd->s68k_regs[0x38+0] << 8) | Pico_mcd->s68k_regs[0x38+1],\r
 520                 (Pico_mcd->s68k_regs[0x38+2] << 8) | Pico_mcd->s68k_regs[0x38+3],\r
 521                 (Pico_mcd->s68k_regs[0x38+4] << 8) | Pico_mcd->s68k_regs[0x38+5],\r
 522                 (Pico_mcd->s68k_regs[0x38+6] << 8) | Pico_mcd->s68k_regs[0x38+7],\r
 523                 (Pico_mcd->s68k_regs[0x38+8] << 8) | Pico_mcd->s68k_regs[0x38+9]);\r
 524 }\r
 525 \r
 526 \r
 527 PICO_INTERNAL void CDD_Import_Command(void)\r
 528 {\r
 529 //      cdprintf("CDD importing command\n");\r
 530         cdprintf("in:  Command=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X  Checksum=%.4X",\r
 531                 (Pico_mcd->s68k_regs[0x38+10+0] << 8) | Pico_mcd->s68k_regs[0x38+10+1],\r
 532                 (Pico_mcd->s68k_regs[0x38+10+2] << 8) | Pico_mcd->s68k_regs[0x38+10+3],\r
 533                 (Pico_mcd->s68k_regs[0x38+10+4] << 8) | Pico_mcd->s68k_regs[0x38+10+5],\r
 534                 (Pico_mcd->s68k_regs[0x38+10+6] << 8) | Pico_mcd->s68k_regs[0x38+10+7],\r
 535                 (Pico_mcd->s68k_regs[0x38+10+8] << 8) | Pico_mcd->s68k_regs[0x38+10+9]);\r
 536 \r
 537         switch (Pico_mcd->s68k_regs[0x38+10+0])\r
 538         {\r
 539                 case 0x0:       // STATUS (?)\r
 540                         Get_Status_CDD_c0();\r
 541                         break;\r
 542 \r
 543                 case 0x1:       // STOP ALL (?)\r
 544                         Stop_CDD_c1();\r
 545                         break;\r
 546 \r
 547                 case 0x2:       // GET TOC INFORMATIONS\r
 548                         switch(Pico_mcd->s68k_regs[0x38+10+3])\r
 549                         {\r
 550                                 case 0x0:       // get current position (MSF format)\r
 551                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00);\r
 552                                         Get_Pos_CDD_c20();\r
 553                                         break;\r
 554 \r
 555                                 case 0x1:       // get elapsed time of current track played/scanned (relative MSF format)\r
 556                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 1;\r
 557                                         Get_Track_Pos_CDD_c21();\r
 558                                         break;\r
 559 \r
 560                                 case 0x2:       // get current track in RS2-RS3\r
 561                                         Pico_mcd->cdd.Status =  (Pico_mcd->cdd.Status & 0xFF00) | 2;\r
 562                                         Get_Current_Track_CDD_c22();\r
 563                                         break;\r
 564 \r
 565                                 case 0x3:       // get total length (MSF format)\r
 566                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 3;\r
 567                                         Get_Total_Lenght_CDD_c23();\r
 568                                         break;\r
 569 \r
 570                                 case 0x4:       // first & last track number\r
 571                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 4;\r
 572                                         Get_First_Last_Track_CDD_c24();\r
 573                                         break;\r
 574 \r
 575                                 case 0x5:       // get track addresse (MSF format)\r
 576                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 5;\r
 577                                         Get_Track_Adr_CDD_c25();\r
 578                                         break;\r
 579 \r
 580                                 default :       // invalid, then we return status\r
 581                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 0xF;\r
 582                                         Get_Status_CDD_c0();\r
 583                                         break;\r
 584                         }\r
 585                         break;\r
 586 \r
 587                 case 0x3:       // READ\r
 588                         Play_CDD_c3();\r
 589                         break;\r
 590 \r
 591                 case 0x4:       // SEEK\r
 592                         Seek_CDD_c4();\r
 593                         break;\r
 594 \r
 595                 case 0x6:       // PAUSE/STOP\r
 596                         Pause_CDD_c6();\r
 597                         break;\r
 598 \r
 599                 case 0x7:       // RESUME\r
 600                         Resume_CDD_c7();\r
 601                         break;\r
 602 \r
 603                 case 0x8:       // FAST FOWARD\r
 604                         Fast_Foward_CDD_c8();\r
 605                         break;\r
 606 \r
 607                 case 0x9:       // FAST REWIND\r
 608                         Fast_Rewind_CDD_c9();\r
 609                         break;\r
 610 \r
 611                 case 0xA:       // RECOVER INITIAL STATE (?)\r
 612                         CDD_cA();\r
 613                         break;\r
 614 \r
 615                 case 0xC:       // CLOSE TRAY\r
 616                         Close_Tray_CDD_cC();\r
 617                         break;\r
 618 \r
 619                 case 0xD:       // OPEN TRAY\r
 620                         Open_Tray_CDD_cD();\r
 621                         break;\r
 622 \r
 623                 default:        // UNKNOWN\r
 624                         CDD_Def();\r
 625                         break;\r
 626         }\r
 627 }\r
 628 \r