Project:Infotec displays: Difference between revisions
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Donated by Nottinghack, who have a [http://wiki.nottinghack.org.uk/wiki/BigClocks project page] with pictures.Further information [http://northackton.stdin.co.uk/wiki/BigClock posted by NortHACKton]. | Donated by Nottinghack, who have a [http://wiki.nottinghack.org.uk/wiki/BigClocks project page] with pictures. Further information [http://northackton.stdin.co.uk/wiki/BigClock posted by NortHACKton]. | ||
== Firmware == | == Firmware == | ||
Revision as of 21:57, 11 September 2011
Donated by Nottinghack, who have a project page with pictures. Further information posted by NortHACKton.
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/.
