trunk/src/mame/drivers/segas32.c
| r31839 | r31840 | |
|---|
| 2516 | 2516 | requires 2 linked system32 pcbs |
| 2517 | 2517 | requires additional math DSP to be emulated |
| 2518 | 2518 | |
| 2519 | | The link PCB attaches 2 System 32 mainboards together, then ROM boards for each mainboard attaches to the link PCB. |
| 2520 | | Contains 2 GALs / PALs and one MB8421 & MB8431 Dual Port SRAMs chips. |
| 2519 | The link PCB attaches 2 System 32 mainboards together, then ROM boards for each mainboard attaches to the link PCB. |
| 2520 | This provides a direct connection between the PCBS (NOT a network link) so they effectively operate as a single boardset |
| 2521 | sharing RAM (we should emulate it as such) |
| 2521 | 2522 | |
| 2523 | Link PCB is a single sparsely populated romless PCB but contains |
| 2524 | |
| 2525 | Left side |
| 2526 | 1x MB8431-12LP (IC2) |
| 2527 | 2x HD74LS74AP (IC6, IC7) |
| 2528 | 2x GAL16V8A-25LP (stamped 315-5545) (IC3) |
| 2529 | |
| 2530 | Right side |
| 2531 | 1x MB8431-12LP (IC1) |
| 2532 | 1x GAL16V8A-25LP (stamped xxx-xxxx) (IC5) |
| 2533 | 1x HD74LS74AP (IC8) |
| 2534 | 1x GAL16V8A-25LP (stamped 315-5545) (IC4) |
| 2535 | |
| 2536 | (todo, full layout) |
| 2537 | |
| 2538 | The left PCB (master?) contains a sub-board on the ROM board with the math DSP, the right PCB does not have this. |
| 2539 | |
| 2522 | 2540 | */ |
| 2523 | 2541 | ROM_START( arescue ) |
| 2524 | 2542 | ROM_REGION( 0x200000, "maincpu", 0 ) /* v60 code + data */ |