jhbruhn / cpd-80 Goto Github PK
View Code? Open in Web Editor NEWA (not yet tested) Z80 Computer with 64k RAM and 32k ROM. And UART. And maybe also IDE/CF-Compatibility
License: Other
cpd-80's People
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cpd-80's Issues
Use highbyte of io a dress instead of a7-a5?
Leave more space between Boards on Muddi?
Fix Protection Diode
Add TMS 9918
Make ROM banked with RAM
make holes for eeprom on memory board wider
Reverse polarity on Muddi
Add AM911
Missing VCC/GND Connections
CPU:
- C1 left to VCC
Memory:
- IC 3 GND (upper left), VCC
- V1 VCC (10)
- V2 GND (8)
- C5 VCC (left)
- C6 VCC and GND
SerialCF:
- R1 left to VCC (16c550)
- C4 left to R6 left (VCC)
DMA?
Build Analysis Board with LEDs for every Bus signal
Floppy?
Add AY-3-8910
Add Oscillator to Serial Board
Replace large ROM with more RAM/VRAM?
The plan is to boot from an CF Card, so why use that much ROM? It could be replaced by a 16k ROM and 16k RAM. Or 8k ROM and 24k (not yet used) VRAM or something like that.
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