12 8080 CPU
12 : 8080 CPU
- Author: Emily Schmidt
- Description: It's an Intel 8080-compatible CPU core that can hopefully run Microsoft BASIC, CP/M, etc.
- GitHub repository
- Open in 3D viewer
- Clock: 1000000 Hz
How it works
It's a 8080-compatible CPU. It needs the RP2040 to simulate RAM and I/O.
How to test
TBD
External hardware
RP2040.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | bus_handshake_ack | bus_handshake_req | data_bus[0] |
| 1 | debug_req | bus_state[0] | data_bus[1] |
| 2 | int_req | bus_state[1] | data_bus[2] |
| 3 | bus_io | data_bus[3] | |
| 4 | cpu_fetch | data_bus[4] | |
| 5 | cpu_in_debug | data_bus[5] | |
| 6 | cpu_halted | data_bus[6] | |
| 7 | cpu_int_ack | data_bus[7] |