64 HiddenCPU
64 : HiddenCPU
- Author: HiddenRoom
- Description: Basic 8 bit CPU.
- GitHub repository
- Clock: 1000 Hz
How it works
Each instruction is executed in one clock cycle.
Instructions are inputed on io_in[2:7].
How to test
After reset, registers will initialize, in order of ascending address, to 00000000b, 00000001b, 00000010b, 00000011b
External hardware
No absolute requirements but external memory and hardware for addressing is not a bad idea
IO
| # | Input | Output |
|---|---|---|
| 0 | clock | bit zero of hardwired output reg number at address 11b or pc |
| 1 | reset | bit one of hardwired output reg number at address 11b or pc |
| 2 | opcode bit zero | bit two of hardwired output reg number at address 11b or pc |
| 3 | opcode bit one | bit three of hardwired output reg number at address 11b or pc |
| 4 | result reg address bit zero | bit four of hardwired output reg number at address 11b or pc |
| 5 | result reg address bit one | bit five of hardwired output reg number at address 11b or pc |
| 6 | non result operand reg address bit zero | bit six of hardwired output reg number at address 11b or pc |
| 7 | non result operand reg address bit one | bit seven of hardwired output reg number at address 11b or pc |