Hi everyone,
Does anyone have schematics showing ROM banking for the 8001A? The 8001 supports only 64KB total but ROM switching differs between the two models. nec pc-8000 roms
I’m looking for verified ROM dumps for the (and PC-8001A). This is the machine that kicked off NEC’s successful PC-8000 series in 1979, predating even the PC-8801 and PC-9801. I’m working on emulation accuracy and also repairing a physical unit with corrupt system PROMs. Hi everyone, Does anyone have schematics showing ROM
Let’s pool our preservation efforts. Thanks! This is the machine that kicked off NEC’s
(Attaching a quick reference table I compiled from PCB photos – correct me if wrong.)
| Model | ROM label | Size | Location | Content | |---------|---------------|--------|-----------|---------------| | PC-8001 | PC-8001-01 | 2KB | Monitor | Boot, editor | | PC-8001 | PC-8001-02 | 2KB | Monitor | Extended I/O | | PC-8001 | PC-8001-03? | 2KB | Character | CG (80 col) | | PC-8001A| PC-8001A-01 | 2KB | Monitor | Updated | | PC-8001A| PC-8001A-02 | 2KB | Monitor | – | | PC-8001A| PC-8001A-CG | 4KB? | Character | CG + Kanji? |