wmarshpersonal
wmarshpersonal
/ prefixed.yaml
Created
November 4, 2025 08:30
Game Boy CPU opcodes in terms of each cycle's ALU, Addr, IDU, Data & Misc operation
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| # CPU unit-level operations for each cycle of each prefixed (i.e. CB) Game Boy opcode. | |
| # Based on the instruction set chapter from "Game Boy: Complete Technical Reference" (https://github.com/Gekkio/gb-ctr) | |
| - name: RLC B | |
| code: 0 | |
| steps: | |
| - addr: PC | |
| idu: PC ← PC + 1 | |
| data: IR ← mem | |
| alu: B ← rlc B | |
| - name: RLC C |