Documentation for cycle accurate Game Boy CPU

• gb-research

  7 219 4.9 VHDL

  Game Boy hardware research

Gekkio's GB-CTR is a good reference of the SM83 (Gameboy CPU) with access pattern withM cycle accuracy. The GB-research repo by the same author also contains a lot of information.

• SameBoy

  4 1,505 9.1 C

  Game Boy and Game Boy Color emulator written in C

You could also consult the SameBoy source code which is a very accurate emulator.

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• gb-ctr

  6 308 6.9 Typst

  Game Boy: Complete Technical Reference

Gekkio's GB-CTR is a good reference of the SM83 (Gameboy CPU) with access pattern withM cycle accuracy. The GB-research repo by the same author also contains a lot of information.

• DMG-CPU-Inside

  4 308 10.0

  Reverse-engineered schematics for DMG-CPU-B

If you want to go deeper, you can look at the reverse engineered schematic of most of the stuff except the CPU core in the DMG-CPU-Inside project. You could also consult the MetroBoy project, which builds on the previous project and aims to be accurate pretty much down to the logic gate level.

• metroboy

  19 1,089 6.7 C++

  A repository of gate-level simulators and tools for the original Game Boy.

If you want to go deeper, you can look at the reverse engineered schematic of most of the stuff except the CPU core in the DMG-CPU-Inside project. You could also consult the MetroBoy project, which builds on the previous project and aims to be accurate pretty much down to the logic gate level.

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