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The Game Boy doesn't use a Z80 though. It's based on a SM83 core, an obscure Sharp design.
by pdw 5y ago
The Game Boy doesn't use a Z80 though. It's based on a SM83 core, an obscure Sharp design.
- detaro 5y agoTrue, but the instruction set is very close, so a Z80 implementation is a good starting point.
- flohofwoe 5y agoIt's essentially a stripped Z80 without the DD-, ED- and FD-prefix instruction ranges. The core instruction block and CB-prefix range is (nearly) the same.
- busterarm 5y agoSee the other responses, but my comment was really suggesting that if LLVM barely supports Z80 then the GameBoy CPU is a hopeless lost cause.