| 1 | // TODO... |
| 2 | |
| 3 | // #include <string.h> |
| 4 | #include "../PicoInt.h" |
| 5 | |
| 6 | #define rot_comp Pico_mcd->rot_comp |
| 7 | |
| 8 | static const int Table_Rot_Time[] = |
| 9 | { |
| 10 | 0x00054000, 0x00048000, 0x00040000, 0x00036000, //; 008-032 ; briefing - sprite |
| 11 | 0x0002E000, 0x00028000, 0x00024000, 0x00022000, //; 036-064 ; arbre souvent |
| 12 | 0x00021000, 0x00020000, 0x0001E000, 0x0001B800, //; 068-096 ; map thunderstrike |
| 13 | 0x00019800, 0x00017A00, 0x00015C00, 0x00013E00, //; 100-128 ; logo défoncé |
| 14 | |
| 15 | 0x00012000, 0x00011800, 0x00011000, 0x00010800, //; 132-160 ; briefing - map |
| 16 | 0x00010000, 0x0000F800, 0x0000F000, 0x0000E800, //; 164-192 |
| 17 | 0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800, //; 196-224 |
| 18 | 0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800, //; 228-256 ; batman visage |
| 19 | |
| 20 | 0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00, //; 260-288 |
| 21 | 0x00009C00, 0x00009B00, 0x00009A00, 0x00009900, //; 292-320 |
| 22 | 0x00009800, 0x00009700, 0x00009600, 0x00009500, //; 324-352 |
| 23 | 0x00009400, 0x00009300, 0x00009200, 0x00009100, //; 356-384 |
| 24 | |
| 25 | 0x00009000, 0x00008F00, 0x00008E00, 0x00008D00, //; 388-416 |
| 26 | 0x00008C00, 0x00008B00, 0x00008A00, 0x00008900, //; 420-448 |
| 27 | 0x00008800, 0x00008700, 0x00008600, 0x00008500, //; 452-476 |
| 28 | 0x00008400, 0x00008300, 0x00008200, 0x00008100, //; 480-512 |
| 29 | }; |
| 30 | |
| 31 | |
| 32 | #if 1*0 |
| 33 | typedef struct |
| 34 | { |
| 35 | unsigned int Reg_58; // Stamp_Size |
| 36 | unsigned int Reg_5A; |
| 37 | unsigned int Reg_5C; |
| 38 | unsigned int Reg_5E; |
| 39 | unsigned int Reg_60; |
| 40 | unsigned int Reg_62; |
| 41 | unsigned int Reg_64; // V_Dot |
| 42 | unsigned int Reg_66; |
| 43 | |
| 44 | unsigned int Stamp_Map_Adr; |
| 45 | unsigned int Buffer_Adr; |
| 46 | unsigned int Vector_Adr; |
| 47 | unsigned int Function; // Jmp_Adr; |
| 48 | unsigned int Float_Part; |
| 49 | unsigned int Draw_Speed; |
| 50 | |
| 51 | unsigned int XS; |
| 52 | unsigned int YS; |
| 53 | /*unsigned*/ int DXS; |
| 54 | /*unsigned*/ int DYS; |
| 55 | unsigned int XD; |
| 56 | unsigned int YD; |
| 57 | unsigned int XD_Mul; |
| 58 | unsigned int H_Dot; |
| 59 | } Rot_Comp; |
| 60 | #endif |
| 61 | |
| 62 | static void gfx_cd_start(void) |
| 63 | { |
| 64 | int upd_len; |
| 65 | |
| 66 | dprintf("gfx_cd_start()"); |
| 67 | |
| 68 | rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4; |
| 69 | rot_comp.Function = (rot_comp.Reg_58 & 7) | (Pico_mcd->s68k_regs[3] & 0x18); // Jmp_Adr |
| 70 | rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2; |
| 71 | rot_comp.YD = (rot_comp.Reg_60 >> 3) & 7; |
| 72 | rot_comp.Vector_Adr = (rot_comp.Reg_66 & 0xfffe) << 2; |
| 73 | |
| 74 | upd_len = (rot_comp.Reg_62 >> 3) & 0x3f; |
| 75 | upd_len = Table_Rot_Time[upd_len]; |
| 76 | rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len; |
| 77 | |
| 78 | rot_comp.Reg_58 |= 0x8000; // Stamp_Size, we start a new GFX operation |
| 79 | |
| 80 | switch (rot_comp.Reg_58 & 6) // Scr_16? |
| 81 | { |
| 82 | case 0: // ? |
| 83 | rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xff80) << 2; |
| 84 | break; |
| 85 | case 2: // .Dot_32 |
| 86 | rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xffe0) << 2; |
| 87 | break; |
| 88 | case 4: // .Scr_16 |
| 89 | rot_comp.Stamp_Map_Adr = 0x20000; |
| 90 | break; |
| 91 | case 6: // .Scr_16_Dot_32 |
| 92 | rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xe000) << 2; |
| 93 | break; |
| 94 | } |
| 95 | |
| 96 | gfx_cd_update(); |
| 97 | } |
| 98 | |
| 99 | |
| 100 | static void gfx_completed(void) |
| 101 | { |
| 102 | rot_comp.Reg_58 &= 0x7fff; // Stamp_Size |
| 103 | rot_comp.Reg_64 = 0; |
| 104 | if (Pico_mcd->s68k_regs[0x33] & (1<<1)) |
| 105 | { |
| 106 | dprintf("gfx_cd irq 1"); |
| 107 | SekInterruptS68k(1); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | |
| 112 | static void gfx_do(void) |
| 113 | { |
| 114 | unsigned int eax, ebx, ecx, edx, esi, edi, pixel = 0; |
| 115 | unsigned int func = rot_comp.Function; |
| 116 | unsigned short *ptrs; |
| 117 | |
| 118 | rot_comp.XD = rot_comp.Reg_60 & 7; |
| 119 | rot_comp.Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2; |
| 120 | rot_comp.H_Dot = rot_comp.Reg_62 & 0x1ff; |
| 121 | ecx = *(unsigned int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr); |
| 122 | edx = ecx >> 16; |
| 123 | ecx = (ecx & 0xffff) << 8; |
| 124 | edx <<= 8; |
| 125 | rot_comp.DXS = *(int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4); |
| 126 | rot_comp.DYS = rot_comp.DXS >> 16; |
| 127 | rot_comp.DXS = (rot_comp.DXS << 16) >> 16; // sign extend |
| 128 | rot_comp.Vector_Adr += 8; |
| 129 | //if ((rot_comp.H_Dot & 0x1ff) == 0) |
| 130 | // goto nothing_to_draw; |
| 131 | |
| 132 | // MAKE_IMAGE_LINE |
| 133 | while (rot_comp.H_Dot) |
| 134 | { |
| 135 | if (func & 2) // mode 32x32 dot |
| 136 | { |
| 137 | if (func & 4) // 16x16 screen |
| 138 | { |
| 139 | eax = (ecx >> (11+5)) & 0x7f; |
| 140 | ebx = (edx >> (11-2)) & 0x3f80; |
| 141 | } |
| 142 | else // 1x1 screen |
| 143 | { |
| 144 | eax = (ecx >> (11+5)) & 0x0f; |
| 145 | ebx = (edx >> (11+2)) & 0x38; |
| 146 | } |
| 147 | } |
| 148 | else // mode 16x16 dot |
| 149 | { |
| 150 | if (func & 4) // 16x16 screen |
| 151 | { |
| 152 | eax = (ecx >> (11+4)) & 0xff; |
| 153 | ebx = (edx >> (11-4)) & 0xff00; |
| 154 | } |
| 155 | else // 1x1 screen |
| 156 | { |
| 157 | eax = (ecx >> (11+4)) & 0x0f; |
| 158 | ebx = (edx >> (11+0)) & 0xf0; |
| 159 | } |
| 160 | } |
| 161 | ebx += eax; |
| 162 | |
| 163 | esi = rot_comp.Stamp_Map_Adr; |
| 164 | ptrs = (unsigned short *) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr + ebx*2); |
| 165 | edi = ptrs[0] | (ptrs[1] << 16); |
| 166 | |
| 167 | // MAKE_IMAGE_PIXEL |
| 168 | if (!(func & 1)) // NOT TILED |
| 169 | { |
| 170 | if (func & 4) // 16x16 screen |
| 171 | { |
| 172 | if ((edx & 0x00800000) || (ecx & 0x00800000)) goto Pixel_Out; |
| 173 | } |
| 174 | else // 1x1 screen |
| 175 | { |
| 176 | if ((edx & 0x00f80000) || (ecx & 0x00f80000)) goto Pixel_Out; |
| 177 | } |
| 178 | } |
| 179 | esi = edi; |
| 180 | edi >>= (11+1); |
| 181 | esi = (esi & 0x7ff) << 7; |
| 182 | if (!esi) goto Pixel_Out; |
| 183 | edi &= (0x1c>>1); |
| 184 | eax = ecx; |
| 185 | ebx = edx; |
| 186 | if (func & 2) edi |= 1; // 32 dots? |
| 187 | switch (edi) |
| 188 | { |
| 189 | case 0x00: // No_Flip_0, 16x16 dots |
| 190 | ebx = (ebx >> 9) & 0x3c; |
| 191 | ebx += esi; |
| 192 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
| 193 | eax = ((eax >> 8) & 0x40) + ebx; |
| 194 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 195 | if (!(edi & 0x800)) pixel >>= 4; |
| 196 | break; |
| 197 | case 0x01: // No_Flip_0, 32x32 dots |
| 198 | ebx = (ebx >> 9) & 0x7c; |
| 199 | ebx += esi; |
| 200 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
| 201 | eax = ((eax >> 7) & 0x180) + ebx; |
| 202 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 203 | if (!(edi & 0x800)) pixel >>= 4; |
| 204 | break; |
| 205 | case 0x02: // No_Flip_90, 16x16 dots |
| 206 | eax = (eax >> 9) & 0x3c; |
| 207 | eax += esi; |
| 208 | edi = (ebx & 0x3800) ^ 0x2800; // bswap |
| 209 | eax += ((ebx >> 8) & 0x40) ^ 0x40; |
| 210 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 211 | if (!(edi & 0x800)) pixel >>= 4; |
| 212 | break; |
| 213 | case 0x03: // No_Flip_90, 32x32 dots |
| 214 | eax = (eax >> 9) & 0x7c; |
| 215 | eax += esi; |
| 216 | edi = (ebx & 0x3800) ^ 0x2800; // bswap |
| 217 | eax += (ebx >> 7) & 0x180; |
| 218 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 219 | if (!(edi & 0x800)) pixel >>= 4; |
| 220 | break; |
| 221 | case 0x04: // No_Flip_180, 16x16 dots |
| 222 | ebx = ((ebx >> 9) & 0x3c) ^ 0x3c; |
| 223 | ebx += esi; |
| 224 | edi = (eax & 0x3800) ^ 0x2800; // bswap and flip |
| 225 | eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx; |
| 226 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 227 | if (!(edi & 0x800)) pixel >>= 4; |
| 228 | break; |
| 229 | case 0x05: // No_Flip_180, 32x32 dots |
| 230 | ebx = ((ebx >> 9) & 0x7c) ^ 0x7c; |
| 231 | ebx += esi; |
| 232 | edi = (eax & 0x3800) ^ 0x2800; // bswap and flip |
| 233 | eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx; |
| 234 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 235 | if (!(edi & 0x800)) pixel >>= 4; |
| 236 | break; |
| 237 | case 0x06: // No_Flip_270, 16x16 dots |
| 238 | eax = ((eax >> 9) & 0x3c) ^ 0x3c; |
| 239 | eax += esi; |
| 240 | edi = (ebx & 0x3800) ^ 0x1000; // bswap |
| 241 | eax += (ebx >> 8) & 0x40; |
| 242 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 243 | if (!(edi & 0x800)) pixel >>= 4; |
| 244 | break; |
| 245 | case 0x07: // No_Flip_270, 32x32 dots |
| 246 | eax = ((eax >> 9) & 0x7c) ^ 0x7c; |
| 247 | eax += esi; |
| 248 | edi = (ebx & 0x3800) ^ 0x1000; // bswap |
| 249 | eax += (ebx >> 7) & 0x180; |
| 250 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 251 | if (!(edi & 0x800)) pixel >>= 4; |
| 252 | break; |
| 253 | case 0x08: // Flip_0, 16x16 dots |
| 254 | ebx = ((ebx >> 9) & 0x3c) ^ 0x3c; |
| 255 | ebx += esi; |
| 256 | edi = (eax & 0x3800) ^ 0x2800; // bswap, flip |
| 257 | eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx; |
| 258 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 259 | if (!(edi & 0x800)) pixel >>= 4; |
| 260 | break; |
| 261 | case 0x09: // Flip_0, 32x32 dots |
| 262 | ebx = ((ebx >> 9) & 0x7c) ^ 0x7c; |
| 263 | ebx += esi; |
| 264 | edi = (eax & 0x3800) ^ 0x2800; // bswap, flip |
| 265 | eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx; |
| 266 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 267 | if (!(edi & 0x800)) pixel >>= 4; |
| 268 | break; |
| 269 | case 0x0a: // Flip_90, 16x16 dots |
| 270 | eax = ((eax >> 9) & 0x3c) ^ 0x3c; |
| 271 | eax += esi; |
| 272 | edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip |
| 273 | eax += ((ebx >> 8) & 0x40) ^ 0x40; |
| 274 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 275 | if (!(edi & 0x800)) pixel >>= 4; |
| 276 | break; |
| 277 | case 0x0b: // Flip_90, 32x32 dots |
| 278 | eax = ((eax >> 9) & 0x7c) ^ 0x7c; |
| 279 | eax += esi; |
| 280 | edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip |
| 281 | eax += ((ebx >> 7) & 0x180) ^ 0x180; |
| 282 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 283 | if (!(edi & 0x800)) pixel >>= 4; |
| 284 | break; |
| 285 | case 0x0c: // Flip_180, 16x16 dots |
| 286 | ebx = ((ebx >> 9) & 0x3c) ^ 0x3c; |
| 287 | ebx += esi; |
| 288 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
| 289 | eax = ((eax >> 8) & 0x40) + ebx; |
| 290 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 291 | if (!(edi & 0x800)) pixel >>= 4; |
| 292 | break; |
| 293 | case 0x0d: // Flip_180, 32x32 dots |
| 294 | ebx = ((ebx >> 9) & 0x7c) ^ 0x7c; |
| 295 | ebx += esi; |
| 296 | edi = (eax & 0x3800) ^ 0x1000; // bswap |
| 297 | eax = ((eax >> 7) & 0x180) + ebx; |
| 298 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 299 | if (!(edi & 0x800)) pixel >>= 4; |
| 300 | break; |
| 301 | case 0x0e: // Flip_270, 16x16 dots |
| 302 | eax = (eax >> 9) & 0x3c; |
| 303 | eax += esi; |
| 304 | edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip |
| 305 | eax += (ebx >> 8) & 0x40; |
| 306 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 307 | if (!(edi & 0x800)) pixel >>= 4; |
| 308 | break; |
| 309 | case 0x0f: // Flip_270, 32x32 dots |
| 310 | eax = (eax >> 9) & 0x7c; |
| 311 | eax += esi; |
| 312 | edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip |
| 313 | eax += (ebx >> 7) & 0x180; |
| 314 | pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax); |
| 315 | if (!(edi & 0x800)) pixel >>= 4; |
| 316 | break; |
| 317 | } |
| 318 | |
| 319 | Pixel_Out: |
| 320 | // pixel = 0; |
| 321 | //Finish: |
| 322 | pixel &= 0x0f; |
| 323 | if (!pixel && (func & 0x18)) goto Next_Pixel; |
| 324 | esi = rot_comp.Buffer_Adr + ((rot_comp.XD>>1)^1); // pixel addr |
| 325 | eax = *(Pico_mcd->word_ram2M + esi); // old pixel |
| 326 | if (rot_comp.XD & 1) |
| 327 | { |
| 328 | if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite |
| 329 | *(Pico_mcd->word_ram2M + esi) = pixel | (eax & 0xf0); |
| 330 | } |
| 331 | else |
| 332 | { |
| 333 | if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite |
| 334 | *(Pico_mcd->word_ram2M + esi) = (pixel << 4) | (eax & 0xf); |
| 335 | } |
| 336 | |
| 337 | |
| 338 | Next_Pixel: |
| 339 | ecx += rot_comp.DXS; |
| 340 | edx += rot_comp.DYS; |
| 341 | rot_comp.XD++; |
| 342 | if (rot_comp.XD >= 8) |
| 343 | { |
| 344 | rot_comp.Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5; |
| 345 | rot_comp.XD = 0; |
| 346 | } |
| 347 | rot_comp.H_Dot--; |
| 348 | } |
| 349 | |
| 350 | |
| 351 | //nothing_to_draw: |
| 352 | rot_comp.YD++; |
| 353 | // rot_comp.V_Dot--; // will be done by caller |
| 354 | } |
| 355 | |
| 356 | |
| 357 | void gfx_cd_update(void) |
| 358 | { |
| 359 | unsigned char *V_Dot = (unsigned char *) &rot_comp.Reg_64; |
| 360 | int jobs; |
| 361 | |
| 362 | dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64); |
| 363 | |
| 364 | if (!*V_Dot) |
| 365 | { |
| 366 | gfx_completed(); |
| 367 | return; |
| 368 | } |
| 369 | |
| 370 | jobs = rot_comp.Float_Part >> 16; |
| 371 | |
| 372 | if (!jobs) |
| 373 | { |
| 374 | rot_comp.Float_Part += rot_comp.Draw_Speed; |
| 375 | return; |
| 376 | } |
| 377 | |
| 378 | rot_comp.Float_Part &= 0xffff; |
| 379 | rot_comp.Float_Part += rot_comp.Draw_Speed; |
| 380 | |
| 381 | while (jobs--) |
| 382 | { |
| 383 | if (PicoOpt & 0x1000) |
| 384 | gfx_do(); // jmp [Jmp_Adr]: |
| 385 | |
| 386 | (*V_Dot)--; // dec byte [V_Dot] |
| 387 | |
| 388 | if (!*V_Dot) |
| 389 | { |
| 390 | // GFX_Completed: |
| 391 | gfx_completed(); |
| 392 | return; |
| 393 | } |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | |
| 398 | unsigned int gfx_cd_read(unsigned int a) |
| 399 | { |
| 400 | unsigned int d = 0; |
| 401 | |
| 402 | switch (a) { |
| 403 | case 0x58: d = rot_comp.Reg_58; break; |
| 404 | case 0x5A: d = rot_comp.Reg_5A; break; |
| 405 | case 0x5C: d = rot_comp.Reg_5C; break; |
| 406 | case 0x5E: d = rot_comp.Reg_5E; break; |
| 407 | case 0x60: d = rot_comp.Reg_60; break; |
| 408 | case 0x62: d = rot_comp.Reg_62; break; |
| 409 | case 0x64: d = rot_comp.Reg_64; break; |
| 410 | case 0x66: break; |
| 411 | default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break; |
| 412 | } |
| 413 | |
| 414 | dprintf("gfx_cd_read(%02x) = %04x", a, d); |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | void gfx_cd_write16(unsigned int a, unsigned int d) |
| 420 | { |
| 421 | dprintf("gfx_cd_write16(%x, %04x)", a, d); |
| 422 | |
| 423 | switch (a) { |
| 424 | case 0x58: // .Reg_Stamp_Size |
| 425 | rot_comp.Reg_58 = d & 7; |
| 426 | return; |
| 427 | |
| 428 | case 0x5A: // .Reg_Stamp_Adr |
| 429 | rot_comp.Reg_5A = d & 0xffe0; |
| 430 | return; |
| 431 | |
| 432 | case 0x5C: // .Reg_IM_VCell_Size |
| 433 | rot_comp.Reg_5C = d & 0x1f; |
| 434 | return; |
| 435 | |
| 436 | case 0x5E: // .Reg_IM_Adr |
| 437 | rot_comp.Reg_5E = d & 0xFFF8; |
| 438 | return; |
| 439 | |
| 440 | case 0x60: // .Reg_IM_Offset |
| 441 | rot_comp.Reg_60 = d & 0x3f; |
| 442 | return; |
| 443 | |
| 444 | case 0x62: // .Reg_IM_HDot_Size |
| 445 | rot_comp.Reg_62 = d & 0x1ff; |
| 446 | return; |
| 447 | |
| 448 | case 0x64: // .Reg_IM_VDot_Size |
| 449 | rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit? |
| 450 | return; |
| 451 | |
| 452 | case 0x66: // .Reg_Vector_Adr |
| 453 | rot_comp.Reg_66 = d & 0xfffe; |
| 454 | if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode |
| 455 | gfx_cd_start(); |
| 456 | return; |
| 457 | |
| 458 | default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | |
| 463 | void gfx_cd_reset(void) |
| 464 | { |
| 465 | memset(&rot_comp.Reg_58, 0, sizeof(rot_comp)); |
| 466 | } |
| 467 | |
| 468 | |
| 469 | // -------------------------------- |
| 470 | |
| 471 | #include "cell_map.c" |
| 472 | |
| 473 | typedef unsigned short u16; |
| 474 | |
| 475 | // check: Heart of the alien, jaguar xj 220 |
| 476 | void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc) |
| 477 | { |
| 478 | unsigned char *base; |
| 479 | unsigned int asrc, a2; |
| 480 | u16 *r; |
| 481 | |
| 482 | base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1]; |
| 483 | |
| 484 | switch (Pico.video.type) |
| 485 | { |
| 486 | case 1: // vram |
| 487 | r = Pico.vram; |
| 488 | for(; len; len--) |
| 489 | { |
| 490 | asrc = cell_map(source >> 2) << 2; |
| 491 | asrc |= source & 2; |
| 492 | // if(a&1) d=(d<<8)|(d>>8); // ?? |
| 493 | r[a>>1] = *(u16 *)(base + asrc); |
| 494 | source += 2; |
| 495 | // AutoIncrement |
| 496 | a=(u16)(a+inc); |
| 497 | } |
| 498 | rendstatus|=0x10; |
| 499 | break; |
| 500 | |
| 501 | case 3: // cram |
| 502 | Pico.m.dirtyPal = 1; |
| 503 | r = Pico.cram; |
| 504 | for(a2=a&0x7f; len; len--) |
| 505 | { |
| 506 | asrc = cell_map(source >> 2) << 2; |
| 507 | asrc |= source & 2; |
| 508 | r[a2>>1] = *(u16 *)(base + asrc); |
| 509 | source += 2; |
| 510 | // AutoIncrement |
| 511 | a2+=inc; |
| 512 | // good dest? |
| 513 | if(a2 >= 0x80) break; |
| 514 | } |
| 515 | a=(a&0xff00)|a2; |
| 516 | break; |
| 517 | |
| 518 | case 5: // vsram[a&0x003f]=d; |
| 519 | r = Pico.vsram; |
| 520 | for(a2=a&0x7f; len; len--) |
| 521 | { |
| 522 | asrc = cell_map(source >> 2) << 2; |
| 523 | asrc |= source & 2; |
| 524 | r[a2>>1] = *(u16 *)(base + asrc); |
| 525 | source += 2; |
| 526 | // AutoIncrement |
| 527 | a2+=inc; |
| 528 | // good dest? |
| 529 | if(a2 >= 0x80) break; |
| 530 | } |
| 531 | a=(a&0xff00)|a2; |
| 532 | break; |
| 533 | } |
| 534 | // remember addr |
| 535 | Pico.video.addr=(u16)a; |
| 536 | } |
| 537 | |