Difference between revisions of "Project:Infotec displays"
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== Firmware == | == Firmware == | ||
| − | NEC 27 (25), which is almost identical to a 186, with | + | NEC 27 (25), which is almost identical to a 186, with register bank switching, DMA and a simple buffering (macro) system for interrupts. [http://www2.renesas.eu/_pdf/U13030EJDV0UM00.PDF User manual] and [http://www.digisolutions.de/downloads/NECV25UsersManual.pdf with opcodes] and [http://www.digisolutions.de/downloads/NECV25Datasheet.pdf with chart]. |
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| − | Disassembly at | + | Disassembly at http://github.com/marksteward/Infotec/. |
Revision as of 18:35, 11 September 2011
Donated by Nottinghack, who have a project page with pictures.
Firmware
NEC 27 (25), which is almost identical to a 186, with register bank switching, DMA and a simple buffering (macro) system for interrupts. User manual and with opcodes and with chart.
| External bus | 8-bit |
| Clock speed | 8MHz? |
| DMA channels | 2 |
| Serial | built-in |
| Timers | 2 |
| Internal data area | 256 bytes based at xxe00 |
| Special functions | 256 bytes based at xxf00 |
Disassembly at http://github.com/marksteward/Infotec/.