src/mess/video/fmtowns.c
| r7015 | r7016 | |
|---|
| 250 | 250 | } |
| 251 | 251 | } |
| 252 | 252 | |
| 253 | static void towns_update_kanji_offset(void) |
| 254 | { |
| 255 | // this is a little over the top... |
| 256 | if(towns_kanji_code_h < 0x30) |
| 257 | { |
| 258 | towns_kanji_offset = ((towns_kanji_code_l & 0x1f) << 4) |
| 259 | | (((towns_kanji_code_l - 0x20) & 0x20) << 8) |
| 260 | | (((towns_kanji_code_l - 0x20) & 0x40) << 6) |
| 261 | | ((towns_kanji_code_h & 0x07) << 9); |
| 262 | } |
| 263 | else if(towns_kanji_code_h < 0x70) |
| 264 | { |
| 265 | towns_kanji_offset = ((towns_kanji_code_l & 0x1f) << 4) |
| 266 | + (((towns_kanji_code_l - 0x20) & 0x60) << 8) |
| 267 | + ((towns_kanji_code_h & 0x0f) << 9) |
| 268 | + (((towns_kanji_code_h - 0x30) & 0x70) * 0xc00) |
| 269 | + 0x8000; |
| 270 | } |
| 271 | else |
| 272 | { |
| 273 | towns_kanji_offset = ((towns_kanji_code_l & 0x1f) << 4) |
| 274 | | (((towns_kanji_code_l - 0x20) & 0x20) << 8) |
| 275 | | (((towns_kanji_code_l - 0x20) & 0x40) << 6) |
| 276 | | ((towns_kanji_code_h & 0x07) << 9) |
| 277 | | 0x38000; |
| 278 | } |
| 279 | } |
| 280 | |
| 253 | 281 | READ8_HANDLER( towns_video_cff80_r ) |
| 254 | 282 | { |
| 255 | 283 | UINT8* ROM = memory_region(space->machine,"user"); |
| r7015 | r7016 | |
|---|
| 302 | 330 | towns_vram_wplane = data & 0x0f; |
| 303 | 331 | towns_vram_rplane = (data & 0xc0) >> 6; |
| 304 | 332 | towns_update_video_banks(space); |
| 305 | | logerror("VGA: VRAM wplane select = 0x%02x\n",towns_vram_wplane); |
| 333 | //logerror("VGA: VRAM wplane select = 0x%02x\n",towns_vram_wplane); |
| 306 | 334 | break; |
| 307 | 335 | case 0x02: // display plane (bits 0-2), display page select (bit 4) |
| 308 | 336 | towns_display_plane = data & 0x27; |
| r7015 | r7016 | |
|---|
| 313 | 341 | break; |
| 314 | 342 | case 0x14: // Kanji offset (high) |
| 315 | 343 | towns_kanji_code_h = data & 0x7f; |
| 344 | towns_update_kanji_offset(); |
| 345 | //logerror("VID: Kanji code set (high) = %02x %02x\n",towns_kanji_code_h,towns_kanji_code_l); |
| 316 | 346 | break; |
| 317 | 347 | case 0x15: // Kanji offset (low) |
| 318 | 348 | towns_kanji_code_l = data & 0x7f; |
| 319 | | // this is a little over the top... |
| 320 | | if(towns_kanji_code_h < 0x30) |
| 321 | | { |
| 322 | | towns_kanji_offset = ((towns_kanji_code_l & 0x1f) << 4) |
| 323 | | | (((towns_kanji_code_l - 0x20) & 0x20) << 8) |
| 324 | | | (((towns_kanji_code_l - 0x20) & 0x40) << 6) |
| 325 | | | ((towns_kanji_code_h & 0x07) << 9); |
| 326 | | } |
| 327 | | else if(towns_kanji_code_h < 0x70) |
| 328 | | { |
| 329 | | towns_kanji_offset = ((towns_kanji_code_l & 0x1f) << 4) |
| 330 | | + (((towns_kanji_code_l - 0x20) & 0x60) << 8) |
| 331 | | + ((towns_kanji_code_h & 0x0f) << 9) |
| 332 | | + (((towns_kanji_code_h - 0x30) & 0x70) * 0xc00) |
| 333 | | + 0x8000; |
| 334 | | } |
| 335 | | else |
| 336 | | { |
| 337 | | towns_kanji_offset = ((towns_kanji_code_l & 0x1f) << 4) |
| 338 | | | (((towns_kanji_code_l - 0x20) & 0x20) << 8) |
| 339 | | | (((towns_kanji_code_l - 0x20) & 0x40) << 6) |
| 340 | | | ((towns_kanji_code_h & 0x07) << 9) |
| 341 | | | 0x38000; |
| 342 | | } |
| 349 | towns_update_kanji_offset(); |
| 350 | //logerror("VID: Kanji code set (low) = %02x %02x\n",towns_kanji_code_h,towns_kanji_code_l); |
| 343 | 351 | break; |
| 344 | 352 | case 0x19: // ANK CG ROM |
| 345 | 353 | towns_ankcg_enable = data & 0x01; |