Pico/cd/LC89510.c

   1 /***********************************************************\r
   2  *                                                         *\r
   3  * This source file 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(x...)\r
  13 \r
  14 \r
  15 #define CDC_DMA_SPEED 256\r
  16 \r
  17 \r
  18 static void CDD_Reset(void)\r
  19 {\r
  20         // Reseting CDD\r
  21 \r
  22         memset(Pico_mcd->s68k_regs+0x34, 0, 2*2); // CDD.Fader, CDD.Control\r
  23         Pico_mcd->cdd.Status = 0;\r
  24         Pico_mcd->cdd.Minute = 0;\r
  25         Pico_mcd->cdd.Seconde = 0;\r
  26         Pico_mcd->cdd.Frame = 0;\r
  27         Pico_mcd->cdd.Ext = 0;\r
  28 \r
  29         // clear receive status and transfer command\r
  30         memset(Pico_mcd->s68k_regs+0x38, 0, 20);\r
  31         Pico_mcd->s68k_regs[0x38+9] = 0xF;              // Default checksum\r
  32 }\r
  33 \r
  34 \r
  35 static void CDC_Reset(void)\r
  36 {\r
  37         // Reseting CDC\r
  38 \r
  39         memset(Pico_mcd->cdc.Buffer, 0, sizeof(Pico_mcd->cdc.Buffer));\r
  40 \r
  41         Pico_mcd->cdc.COMIN = 0;\r
  42         Pico_mcd->cdc.IFSTAT = 0xFF;\r
  43         Pico_mcd->cdc.DAC.N = 0;\r
  44         Pico_mcd->cdc.DBC.N = 0;\r
  45         Pico_mcd->cdc.HEAD.N = 0x01000000;\r
  46         Pico_mcd->cdc.PT.N = 0;\r
  47         Pico_mcd->cdc.WA.N = 2352 * 2;\r
  48         Pico_mcd->cdc.STAT.N = 0x00000080;\r
  49         Pico_mcd->cdc.SBOUT = 0;\r
  50         Pico_mcd->cdc.IFCTRL = 0;\r
  51         Pico_mcd->cdc.CTRL.N = 0;\r
  52 \r
  53         Pico_mcd->cdc.Decode_Reg_Read = 0;\r
  54         Pico_mcd->scd.Status_CDC &= ~0x08;\r
  55 }\r
  56 \r
  57 \r
  58 PICO_INTERNAL void LC89510_Reset(void)\r
  59 {\r
  60         CDD_Reset();\r
  61         CDC_Reset();\r
  62 \r
  63         // clear DMA_Adr & Stop_Watch\r
  64         memset(Pico_mcd->s68k_regs + 0xA, 0, 4);\r
  65 }\r
  66 \r
  67 \r
  68 PICO_INTERNAL void Update_CDC_TRansfer(int which)\r
  69 {\r
  70         unsigned int DMA_Adr, dep, length;\r
  71         unsigned short *dest;\r
  72         unsigned char  *src;\r
  73 \r
  74         if (Pico_mcd->cdc.DBC.N <= (CDC_DMA_SPEED * 2))\r
  75         {\r
  76                 length = (Pico_mcd->cdc.DBC.N + 1) >> 1;\r
  77                 Pico_mcd->scd.Status_CDC &= ~0x08;      // Last transfer\r
  78                 Pico_mcd->s68k_regs[4] |=  0x80;        // End data transfer\r
  79                 Pico_mcd->s68k_regs[4] &= ~0x40;        // no more data ready\r
  80                 Pico_mcd->cdc.IFSTAT |= 0x08;           // No more data transfer in progress\r
  81 \r
  82                 if (Pico_mcd->cdc.IFCTRL & 0x40)        // DTEIEN = Data Trasnfer End Interrupt Enable ?\r
  83                 {\r
  84                         Pico_mcd->cdc.IFSTAT &= ~0x40;\r
  85 \r
  86                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))\r
  87                         {\r
  88                                 elprintf(EL_INTS, "cdc DTE irq 5");\r
  89                                 SekInterruptS68k(5);\r
  90                         }\r
  91                 }\r
  92         }\r
  93         else length = CDC_DMA_SPEED;\r
  94 \r
  95 \r
  96         // TODO: dst bounds checking?\r
  97         src = Pico_mcd->cdc.Buffer + Pico_mcd->cdc.DAC.N;\r
  98         DMA_Adr = (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB];\r
  99 \r
 100         if (which == 7) // WORD RAM\r
 101         {\r
 102                 if (Pico_mcd->s68k_regs[3] & 4)\r
 103                 {\r
 104                         // test: Final Fight\r
 105                         int bank = !(Pico_mcd->s68k_regs[3]&1);\r
 106                         dep = ((DMA_Adr & 0x3FFF) << 3);\r
 107                         cdprintf("CD DMA # %04x -> word_ram1M # %06x, len=%i",\r
 108                                         Pico_mcd->cdc.DAC.N, dep, length);\r
 109 \r
 110                         dest = (unsigned short *) (Pico_mcd->word_ram1M[bank] + dep);\r
 111 \r
 112                         memcpy16bswap(dest, src, length);\r
 113 \r
 114                         /*{ // debug\r
 115                                 unsigned char *b1 = Pico_mcd->word_ram1M[bank] + dep;\r
 116                                 unsigned char *b2 = (unsigned char *)(dest+length) - 8;\r
 117                                 dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
 118                                         b1[0], b1[1], b1[4], b1[5], b2[0], b2[1], b2[4], b2[5]);\r
 119                         }*/\r
 120                 }\r
 121                 else\r
 122                 {\r
 123                         dep = ((DMA_Adr & 0x7FFF) << 3);\r
 124                         cdprintf("CD DMA # %04x -> word_ram2M # %06x, len=%i",\r
 125                                         Pico_mcd->cdc.DAC.N, dep, length);\r
 126                         dest = (unsigned short *) (Pico_mcd->word_ram2M + dep);\r
 127 \r
 128                         memcpy16bswap(dest, src, length);\r
 129 \r
 130                         /*{ // debug\r
 131                                 unsigned char *b1 = Pico_mcd->word_ram2M + dep;\r
 132                                 unsigned char *b2 = (unsigned char *)(dest+length) - 4;\r
 133                                 dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
 134                                         b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r
 135                         }*/\r
 136                 }\r
 137         }\r
 138         else if (which == 4) // PCM RAM (check: popful Mail)\r
 139         {\r
 140                 dep = (DMA_Adr & 0x03FF) << 2;\r
 141                 cdprintf("CD DMA # %04x -> PCM[%i] # %04x, len=%i",\r
 142                         Pico_mcd->cdc.DAC.N, Pico_mcd->pcm.bank, dep, length);\r
 143                 dest = (unsigned short *) (Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank] + dep);\r
 144 \r
 145                 if (Pico_mcd->cdc.DAC.N & 1) /* unaligned src? */\r
 146                         memcpy(dest, src, length*2);\r
 147                 else    memcpy16(dest, (unsigned short *) src, length);\r
 148         }\r
 149         else if (which == 5) // PRG RAM\r
 150         {\r
 151                 dep = DMA_Adr << 3;\r
 152                 dest = (unsigned short *) (Pico_mcd->prg_ram + dep);\r
 153                 cdprintf("CD DMA # %04x -> prg_ram # %06x, len=%i",\r
 154                                 Pico_mcd->cdc.DAC.N, dep, length);\r
 155 \r
 156                 memcpy16bswap(dest, src, length);\r
 157 \r
 158                 /*{ // debug\r
 159                         unsigned char *b1 = Pico_mcd->prg_ram + dep;\r
 160                         unsigned char *b2 = (unsigned char *)(dest+length) - 4;\r
 161                         dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
 162                                 b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r
 163                 }*/\r
 164         }\r
 165 \r
 166         length <<= 1;\r
 167         Pico_mcd->cdc.DAC.N = (Pico_mcd->cdc.DAC.N + length) & 0xFFFF;\r
 168         if (Pico_mcd->scd.Status_CDC & 0x08) Pico_mcd->cdc.DBC.N -= length;\r
 169         else Pico_mcd->cdc.DBC.N = 0;\r
 170 \r
 171         // update DMA_Adr\r
 172         length >>= 2;\r
 173         if (which != 4) length >>= 1;\r
 174         DMA_Adr += length;\r
 175         Pico_mcd->s68k_regs[0xA] = DMA_Adr >> 8;\r
 176         Pico_mcd->s68k_regs[0xB] = DMA_Adr;\r
 177 }\r
 178 \r
 179 \r
 180 PICO_INTERNAL_ASM unsigned short Read_CDC_Host(int is_sub)\r
 181 {\r
 182         int addr;\r
 183 \r
 184         if (!(Pico_mcd->scd.Status_CDC & 0x08))\r
 185         {\r
 186                 // Transfer data disabled\r
 187                 cdprintf("Read_CDC_Host FIXME: Transfer data disabled");\r
 188                 return 0;\r
 189         }\r
 190 \r
 191         if ((is_sub && (Pico_mcd->s68k_regs[4] & 7) != 3) ||\r
 192                 (!is_sub && (Pico_mcd->s68k_regs[4] & 7) != 2))\r
 193         {\r
 194                 // Wrong setting\r
 195                 cdprintf("Read_CDC_Host FIXME: Wrong setting");\r
 196                 return 0;\r
 197         }\r
 198 \r
 199         Pico_mcd->cdc.DBC.N -= 2;\r
 200 \r
 201         if (Pico_mcd->cdc.DBC.N <= 0)\r
 202         {\r
 203                 Pico_mcd->cdc.DBC.N = 0;\r
 204                 Pico_mcd->scd.Status_CDC &= ~0x08;              // Last transfer\r
 205                 Pico_mcd->s68k_regs[4] |=  0x80;                // End data transfer\r
 206                 Pico_mcd->s68k_regs[4] &= ~0x40;                // no more data ready\r
 207                 Pico_mcd->cdc.IFSTAT |= 0x08;                   // No more data transfer in progress\r
 208 \r
 209                 if (Pico_mcd->cdc.IFCTRL & 0x40)                // DTEIEN = Data Transfer End Interrupt Enable ?\r
 210                 {\r
 211                         Pico_mcd->cdc.IFSTAT &= ~0x40;\r
 212 \r
 213                         if (Pico_mcd->s68k_regs[0x33]&(1<<5)) {\r
 214                                 elprintf(EL_INTS, "m68k: s68k irq 5");\r
 215                                 SekInterruptS68k(5);\r
 216                         }\r
 217 \r
 218                         cdprintf("CDC - DTE interrupt");\r
 219                 }\r
 220         }\r
 221 \r
 222         addr = Pico_mcd->cdc.DAC.N;\r
 223         Pico_mcd->cdc.DAC.N += 2;\r
 224 \r
 225         cdprintf("Read_CDC_Host sub=%i d=%04x dac=%04x dbc=%04x", is_sub,\r
 226                 (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1], Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N);\r
 227 \r
 228         return (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1];\r
 229 }\r
 230 \r
 231 \r
 232 PICO_INTERNAL void CDC_Update_Header(void)\r
 233 {\r
 234         if (Pico_mcd->cdc.CTRL.B.B1 & 0x01)             // Sub-Header wanted ?\r
 235         {\r
 236                 Pico_mcd->cdc.HEAD.B.B0 = 0;\r
 237                 Pico_mcd->cdc.HEAD.B.B1 = 0;\r
 238                 Pico_mcd->cdc.HEAD.B.B2 = 0;\r
 239                 Pico_mcd->cdc.HEAD.B.B3 = 0;\r
 240         }\r
 241         else\r
 242         {\r
 243                 _msf MSF;\r
 244 \r
 245                 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);\r
 246 \r
 247                 Pico_mcd->cdc.HEAD.B.B0 = INT_TO_BCDB(MSF.M);\r
 248                 Pico_mcd->cdc.HEAD.B.B1 = INT_TO_BCDB(MSF.S);\r
 249                 Pico_mcd->cdc.HEAD.B.B2 = INT_TO_BCDB(MSF.F);\r
 250                 Pico_mcd->cdc.HEAD.B.B3 = 0x01;\r
 251         }\r
 252 }\r
 253 \r
 254 \r
 255 PICO_INTERNAL unsigned char CDC_Read_Reg(void)\r
 256 {\r
 257         unsigned char ret;\r
 258 \r
 259         switch(Pico_mcd->s68k_regs[5] & 0xF)\r
 260         {\r
 261                 case 0x0: // COMIN\r
 262                         cdprintf("CDC read reg 00 = %.2X", Pico_mcd->cdc.COMIN);\r
 263 \r
 264                         Pico_mcd->s68k_regs[5] = 0x1;\r
 265                         return Pico_mcd->cdc.COMIN;\r
 266 \r
 267                 case 0x1: // IFSTAT\r
 268                         cdprintf("CDC read reg 01 = %.2X", Pico_mcd->cdc.IFSTAT);\r
 269 \r
 270                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 1);              // Reg 1 (decoding)\r
 271                         Pico_mcd->s68k_regs[5] = 0x2;\r
 272                         return Pico_mcd->cdc.IFSTAT;\r
 273 \r
 274                 case 0x2: // DBCL\r
 275                         cdprintf("CDC read reg 02 = %.2X", Pico_mcd->cdc.DBC.B.L);\r
 276 \r
 277                         Pico_mcd->s68k_regs[5] = 0x3;\r
 278                         return Pico_mcd->cdc.DBC.B.L;\r
 279 \r
 280                 case 0x3: // DBCH\r
 281                         cdprintf("CDC read reg 03 = %.2X", Pico_mcd->cdc.DBC.B.H);\r
 282 \r
 283                         Pico_mcd->s68k_regs[5] = 0x4;\r
 284                         return Pico_mcd->cdc.DBC.B.H;\r
 285 \r
 286                 case 0x4: // HEAD0\r
 287                         cdprintf("CDC read reg 04 = %.2X", Pico_mcd->cdc.HEAD.B.B0);\r
 288 \r
 289                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 4);              // Reg 4 (decoding)\r
 290                         Pico_mcd->s68k_regs[5] = 0x5;\r
 291                         return Pico_mcd->cdc.HEAD.B.B0;\r
 292 \r
 293                 case 0x5: // HEAD1\r
 294                         cdprintf("CDC read reg 05 = %.2X", Pico_mcd->cdc.HEAD.B.B1);\r
 295 \r
 296                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 5);              // Reg 5 (decoding)\r
 297                         Pico_mcd->s68k_regs[5] = 0x6;\r
 298                         return Pico_mcd->cdc.HEAD.B.B1;\r
 299 \r
 300                 case 0x6: // HEAD2\r
 301                         cdprintf("CDC read reg 06 = %.2X", Pico_mcd->cdc.HEAD.B.B2);\r
 302 \r
 303                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 6);              // Reg 6 (decoding)\r
 304                         Pico_mcd->s68k_regs[5] = 0x7;\r
 305                         return Pico_mcd->cdc.HEAD.B.B2;\r
 306 \r
 307                 case 0x7: // HEAD3\r
 308                         cdprintf("CDC read reg 07 = %.2X", Pico_mcd->cdc.HEAD.B.B3);\r
 309 \r
 310                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 7);              // Reg 7 (decoding)\r
 311                         Pico_mcd->s68k_regs[5] = 0x8;\r
 312                         return Pico_mcd->cdc.HEAD.B.B3;\r
 313 \r
 314                 case 0x8: // PTL\r
 315                         cdprintf("CDC read reg 08 = %.2X", Pico_mcd->cdc.PT.B.L);\r
 316 \r
 317                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 8);              // Reg 8 (decoding)\r
 318                         Pico_mcd->s68k_regs[5] = 0x9;\r
 319                         return Pico_mcd->cdc.PT.B.L;\r
 320 \r
 321                 case 0x9: // PTH\r
 322                         cdprintf("CDC read reg 09 = %.2X", Pico_mcd->cdc.PT.B.H);\r
 323 \r
 324                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 9);              // Reg 9 (decoding)\r
 325                         Pico_mcd->s68k_regs[5] = 0xA;\r
 326                         return Pico_mcd->cdc.PT.B.H;\r
 327 \r
 328                 case 0xA: // WAL\r
 329                         cdprintf("CDC read reg 10 = %.2X", Pico_mcd->cdc.WA.B.L);\r
 330 \r
 331                         Pico_mcd->s68k_regs[5] = 0xB;\r
 332                         return Pico_mcd->cdc.WA.B.L;\r
 333 \r
 334                 case 0xB: // WAH\r
 335                         cdprintf("CDC read reg 11 = %.2X", Pico_mcd->cdc.WA.B.H);\r
 336 \r
 337                         Pico_mcd->s68k_regs[5] = 0xC;\r
 338                         return Pico_mcd->cdc.WA.B.H;\r
 339 \r
 340                 case 0xC: // STAT0\r
 341                         cdprintf("CDC read reg 12 = %.2X", Pico_mcd->cdc.STAT.B.B0);\r
 342 \r
 343                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 12);             // Reg 12 (decoding)\r
 344                         Pico_mcd->s68k_regs[5] = 0xD;\r
 345                         return Pico_mcd->cdc.STAT.B.B0;\r
 346 \r
 347                 case 0xD: // STAT1\r
 348                         cdprintf("CDC read reg 13 = %.2X", Pico_mcd->cdc.STAT.B.B1);\r
 349 \r
 350                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 13);             // Reg 13 (decoding)\r
 351                         Pico_mcd->s68k_regs[5] = 0xE;\r
 352                         return Pico_mcd->cdc.STAT.B.B1;\r
 353 \r
 354                 case 0xE: // STAT2\r
 355                         cdprintf("CDC read reg 14 = %.2X", Pico_mcd->cdc.STAT.B.B2);\r
 356 \r
 357                         Pico_mcd->cdc.Decode_Reg_Read |= (1 << 14);             // Reg 14 (decoding)\r
 358                         Pico_mcd->s68k_regs[5] = 0xF;\r
 359                         return Pico_mcd->cdc.STAT.B.B2;\r
 360 \r
 361                 case 0xF: // STAT3\r
 362                         cdprintf("CDC read reg 15 = %.2X", Pico_mcd->cdc.STAT.B.B3);\r
 363 \r
 364                         ret = Pico_mcd->cdc.STAT.B.B3;\r
 365                         Pico_mcd->cdc.IFSTAT |= 0x20;                   // decoding interrupt flag cleared\r
 366                         if ((Pico_mcd->cdc.CTRL.B.B0 & 0x80) && (Pico_mcd->cdc.IFCTRL & 0x20))\r
 367                         {\r
 368                                 if ((Pico_mcd->cdc.Decode_Reg_Read & 0x73F2) == 0x73F2)\r
 369                                         Pico_mcd->cdc.STAT.B.B3 = 0x80;\r
 370                         }\r
 371                         return ret;\r
 372         }\r
 373 \r
 374         return 0;\r
 375 }\r
 376 \r
 377 \r
 378 PICO_INTERNAL void CDC_Write_Reg(unsigned char Data)\r
 379 {\r
 380         cdprintf("CDC write reg%02d = %.2X", Pico_mcd->s68k_regs[5] & 0xF, Data);\r
 381 \r
 382         switch (Pico_mcd->s68k_regs[5] & 0xF)\r
 383         {\r
 384                 case 0x0: // SBOUT\r
 385                         Pico_mcd->s68k_regs[5] = 0x1;\r
 386                         Pico_mcd->cdc.SBOUT = Data;\r
 387 \r
 388                         break;\r
 389 \r
 390                 case 0x1: // IFCTRL\r
 391                         Pico_mcd->s68k_regs[5] = 0x2;\r
 392                         Pico_mcd->cdc.IFCTRL = Data;\r
 393 \r
 394                         if ((Pico_mcd->cdc.IFCTRL & 0x02) == 0)         // Stop data transfer\r
 395                         {\r
 396                                 Pico_mcd->cdc.DBC.N = 0;\r
 397                                 Pico_mcd->scd.Status_CDC &= ~0x08;\r
 398                                 Pico_mcd->cdc.IFSTAT |= 0x08;           // No more data transfer in progress\r
 399                         }\r
 400                         break;\r
 401 \r
 402                 case 0x2: // DBCL\r
 403                         Pico_mcd->s68k_regs[5] = 0x3;\r
 404                         Pico_mcd->cdc.DBC.B.L = Data;\r
 405 \r
 406                         break;\r
 407 \r
 408                 case 0x3: // DBCH\r
 409                         Pico_mcd->s68k_regs[5] = 0x4;\r
 410                         Pico_mcd->cdc.DBC.B.H = Data;\r
 411 \r
 412                         break;\r
 413 \r
 414                 case 0x4: // DACL\r
 415                         Pico_mcd->s68k_regs[5] = 0x5;\r
 416                         Pico_mcd->cdc.DAC.B.L = Data;\r
 417 \r
 418                         break;\r
 419 \r
 420                 case 0x5: // DACH\r
 421                         Pico_mcd->s68k_regs[5] = 0x6;\r
 422                         Pico_mcd->cdc.DAC.B.H = Data;\r
 423 \r
 424                         break;\r
 425 \r
 426                 case 0x6: // DTTRG\r
 427                         if (Pico_mcd->cdc.IFCTRL & 0x02)                // Data transfer enable ?\r
 428                         {\r
 429                                 Pico_mcd->cdc.IFSTAT &= ~0x08;          // Data transfer in progress\r
 430                                 Pico_mcd->scd.Status_CDC |= 0x08;       // Data transfer in progress\r
 431                                 Pico_mcd->s68k_regs[4] &= 0x7F;         // A data transfer start\r
 432 \r
 433                                 cdprintf("************** Starting Data Transfer ***********");\r
 434                                 cdprintf("RS0 = %.4X  DAC = %.4X  DBC = %.4X  DMA adr = %.4X\n\n", Pico_mcd->s68k_regs[4]<<8,\r
 435                                         Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N, (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB]);\r
 436                         }\r
 437                         break;\r
 438 \r
 439                 case 0x7: // DTACK\r
 440                         Pico_mcd->cdc.IFSTAT |= 0x40;                   // end data transfer interrupt flag cleared\r
 441                         break;\r
 442 \r
 443                 case 0x8: // WAL\r
 444                         Pico_mcd->s68k_regs[5] = 0x9;\r
 445                         Pico_mcd->cdc.WA.B.L = Data;\r
 446 \r
 447                         break;\r
 448 \r
 449                 case 0x9: // WAH\r
 450                         Pico_mcd->s68k_regs[5] = 0xA;\r
 451                         Pico_mcd->cdc.WA.B.H = Data;\r
 452 \r
 453                         break;\r
 454 \r
 455                 case 0xA: // CTRL0\r
 456                         Pico_mcd->s68k_regs[5] = 0xB;\r
 457                         Pico_mcd->cdc.CTRL.B.B0 = Data;\r
 458 \r
 459                         break;\r
 460 \r
 461                 case 0xB: // CTRL1\r
 462                         Pico_mcd->s68k_regs[5] = 0xC;\r
 463                         Pico_mcd->cdc.CTRL.B.B1 = Data;\r
 464 \r
 465                         break;\r
 466 \r
 467                 case 0xC: // PTL\r
 468                         Pico_mcd->s68k_regs[5] = 0xD;\r
 469                         Pico_mcd->cdc.PT.B.L = Data;\r
 470 \r
 471                         break;\r
 472 \r
 473                 case 0xD: // PTH\r
 474                         Pico_mcd->s68k_regs[5] = 0xE;\r
 475                         Pico_mcd->cdc.PT.B.H = Data;\r
 476 \r
 477                         break;\r
 478 \r
 479                 case 0xE: // CTRL2\r
 480                         Pico_mcd->cdc.CTRL.B.B2 = Data;\r
 481                         break;\r
 482 \r
 483                 case 0xF: // RESET\r
 484                         CDC_Reset();\r
 485                         break;\r
 486         }\r
 487 }\r
 488 \r
 489 \r
 490 static int bswapwrite(int a, unsigned short d)\r
 491 {\r
 492         *(unsigned short *)(Pico_mcd->s68k_regs + a) = (d>>8)|(d<<8);\r
 493         return d + (d >> 8);\r
 494 }\r
 495 \r
 496 PICO_INTERNAL void CDD_Export_Status(void)\r
 497 {\r
 498         unsigned int csum;\r
 499 \r
 500         csum  = bswapwrite( 0x38+0, Pico_mcd->cdd.Status);\r
 501         csum += bswapwrite( 0x38+2, Pico_mcd->cdd.Minute);\r
 502         csum += bswapwrite( 0x38+4, Pico_mcd->cdd.Seconde);\r
 503         csum += bswapwrite( 0x38+6, Pico_mcd->cdd.Frame);\r
 504         Pico_mcd->s68k_regs[0x38+8] = Pico_mcd->cdd.Ext;\r
 505         csum += Pico_mcd->cdd.Ext;\r
 506         Pico_mcd->s68k_regs[0x38+9] = ~csum & 0xf;\r
 507 \r
 508         Pico_mcd->s68k_regs[0x37] &= 3; // CDD.Control\r
 509 \r
 510         if (Pico_mcd->s68k_regs[0x33] & (1<<4))\r
 511         {\r
 512                 elprintf(EL_INTS, "cdd export irq 4");\r
 513                 SekInterruptS68k(4);\r
 514         }\r
 515 \r
 516 //      cdprintf("CDD exported status\n");\r
 517         cdprintf("out:  Status=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X  Checksum=%.4X",\r
 518                 (Pico_mcd->s68k_regs[0x38+0] << 8) | Pico_mcd->s68k_regs[0x38+1],\r
 519                 (Pico_mcd->s68k_regs[0x38+2] << 8) | Pico_mcd->s68k_regs[0x38+3],\r
 520                 (Pico_mcd->s68k_regs[0x38+4] << 8) | Pico_mcd->s68k_regs[0x38+5],\r
 521                 (Pico_mcd->s68k_regs[0x38+6] << 8) | Pico_mcd->s68k_regs[0x38+7],\r
 522                 (Pico_mcd->s68k_regs[0x38+8] << 8) | Pico_mcd->s68k_regs[0x38+9]);\r
 523 }\r
 524 \r
 525 \r
 526 PICO_INTERNAL void CDD_Import_Command(void)\r
 527 {\r
 528 //      cdprintf("CDD importing command\n");\r
 529         cdprintf("in:  Command=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X  Checksum=%.4X",\r
 530                 (Pico_mcd->s68k_regs[0x38+10+0] << 8) | Pico_mcd->s68k_regs[0x38+10+1],\r
 531                 (Pico_mcd->s68k_regs[0x38+10+2] << 8) | Pico_mcd->s68k_regs[0x38+10+3],\r
 532                 (Pico_mcd->s68k_regs[0x38+10+4] << 8) | Pico_mcd->s68k_regs[0x38+10+5],\r
 533                 (Pico_mcd->s68k_regs[0x38+10+6] << 8) | Pico_mcd->s68k_regs[0x38+10+7],\r
 534                 (Pico_mcd->s68k_regs[0x38+10+8] << 8) | Pico_mcd->s68k_regs[0x38+10+9]);\r
 535 \r
 536         switch (Pico_mcd->s68k_regs[0x38+10+0])\r
 537         {\r
 538                 case 0x0:       // STATUS (?)\r
 539                         Get_Status_CDD_c0();\r
 540                         break;\r
 541 \r
 542                 case 0x1:       // STOP ALL (?)\r
 543                         Stop_CDD_c1();\r
 544                         break;\r
 545 \r
 546                 case 0x2:       // GET TOC INFORMATIONS\r
 547                         switch(Pico_mcd->s68k_regs[0x38+10+3])\r
 548                         {\r
 549                                 case 0x0:       // get current position (MSF format)\r
 550                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00);\r
 551                                         Get_Pos_CDD_c20();\r
 552                                         break;\r
 553 \r
 554                                 case 0x1:       // get elapsed time of current track played/scanned (relative MSF format)\r
 555                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 1;\r
 556                                         Get_Track_Pos_CDD_c21();\r
 557                                         break;\r
 558 \r
 559                                 case 0x2:       // get current track in RS2-RS3\r
 560                                         Pico_mcd->cdd.Status =  (Pico_mcd->cdd.Status & 0xFF00) | 2;\r
 561                                         Get_Current_Track_CDD_c22();\r
 562                                         break;\r
 563 \r
 564                                 case 0x3:       // get total length (MSF format)\r
 565                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 3;\r
 566                                         Get_Total_Lenght_CDD_c23();\r
 567                                         break;\r
 568 \r
 569                                 case 0x4:       // first & last track number\r
 570                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 4;\r
 571                                         Get_First_Last_Track_CDD_c24();\r
 572                                         break;\r
 573 \r
 574                                 case 0x5:       // get track addresse (MSF format)\r
 575                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 5;\r
 576                                         Get_Track_Adr_CDD_c25();\r
 577                                         break;\r
 578 \r
 579                                 default :       // invalid, then we return status\r
 580                                         Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 0xF;\r
 581                                         Get_Status_CDD_c0();\r
 582                                         break;\r
 583                         }\r
 584                         break;\r
 585 \r
 586                 case 0x3:       // READ\r
 587                         Play_CDD_c3();\r
 588                         break;\r
 589 \r
 590                 case 0x4:       // SEEK\r
 591                         Seek_CDD_c4();\r
 592                         break;\r
 593 \r
 594                 case 0x6:       // PAUSE/STOP\r
 595                         Pause_CDD_c6();\r
 596                         break;\r
 597 \r
 598                 case 0x7:       // RESUME\r
 599                         Resume_CDD_c7();\r
 600                         break;\r
 601 \r
 602                 case 0x8:       // FAST FOWARD\r
 603                         Fast_Foward_CDD_c8();\r
 604                         break;\r
 605 \r
 606                 case 0x9:       // FAST REWIND\r
 607                         Fast_Rewind_CDD_c9();\r
 608                         break;\r
 609 \r
 610                 case 0xA:       // RECOVER INITIAL STATE (?)\r
 611                         CDD_cA();\r
 612                         break;\r
 613 \r
 614                 case 0xC:       // CLOSE TRAY\r
 615                         Close_Tray_CDD_cC();\r
 616                         break;\r
 617 \r
 618                 case 0xD:       // OPEN TRAY\r
 619                         Open_Tray_CDD_cD();\r
 620                         break;\r
 621 \r
 622                 default:        // UNKNOWN\r
 623                         CDD_Def();\r
 624                         break;\r
 625         }\r
 626 }\r
 627 \r