trunk/src/mess/drivers/tsispch.c
| r32219 | r32220 | |
|---|
| 483 | 483 | // |
| 484 | 484 | // Note U81 is optional; it can be replaced by a 74s138 instead of a prom, |
| 485 | 485 | // with A19, A18, A17 as inputs, for decoding the roms as: |
| 486 | | // 7 - to /CE of ROMs 0(U21) and 1(U44) (0xE0000-0xF1FFF) |
| 487 | | // 6 - to /CE of ROMs 2(U22) and 3(U45) (0xE4000-0xF3FFF) |
| 488 | | // 5 - to /CE of ROMs 4(U23) and 5(U46) (0xE8000-0xF5FFF) |
| 489 | | // 4 - to /CE of ROMs 6(U24) and 7(U47) (0xEC000-0xF7FFF) |
| 490 | | // 3 - to /CE of ROMs 8(U25) and 9(U48) (0xF0000-0xF9FFF) |
| 491 | | // 2 - to /CE of ROMs 10(U26) and 11(U49) (0xF4000-0xFBFFF) |
| 492 | | // 1 - to /CE of ROMs 12(U27) and 13(U50) (0xF8000-0xFDFFF) |
| 486 | // 7 - to /CE of ROMs 0(U21) and 1(U44) (0xE0000-0xE3FFF) |
| 487 | // 6 - to /CE of ROMs 2(U22) and 3(U45) (0xE4000-0xE7FFF) |
| 488 | // 5 - to /CE of ROMs 4(U23) and 5(U46) (0xE8000-0xEBFFF) |
| 489 | // 4 - to /CE of ROMs 6(U24) and 7(U47) (0xEC000-0xEFFFF) |
| 490 | // 3 - to /CE of ROMs 8(U25) and 9(U48) (0xF0000-0xF3FFF) |
| 491 | // 2 - to /CE of ROMs 10(U26) and 11(U49) (0xF4000-0xF7FFF) |
| 492 | // 1 - to /CE of ROMs 12(U27) and 13(U50) (0xF8000-0xFBFFF) |
| 493 | 493 | // 0 - to /CE of ROMs 14(U28) and 15(U51) (0xFC000-0xFFFFF) |
| 494 | 494 | |
| 495 | 495 | ROM_REGION(0x1000, "proms", 0) |