DMG-CPU-Inside
edge
DMG-CPU-Inside | edge | |
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4 | 1 | |
308 | 8 | |
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10.0 | 1.4 | |
over 3 years ago | about 1 year ago | |
C++ | ||
Creative Commons Attribution Share Alike 4.0 | - |
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DMG-CPU-Inside
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Documentation for cycle accurate Game Boy CPU
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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Gate level chip documentation?
There's an ongoing project like this for the Gameboy that aims to build a logic block level description of the CPU and peripherals. There's also an emulator that's in very early stages (not sure if it's working at all yet). There's another edge accurate GB emulator which I don't believe is released yet, but should be work in progress.
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Reverse-engineering the interrupt circuitry in the Intel 8086 processor
The furthest I've seen publicly is the original Playstation ASICs. http://psxdev.ru/ [Russian Language]
Similar in time to the playstation ASICs (and similar design in sort of a soup of standard cells on a CMOS process), but at a gate count similar to Ken's fantastic work here on the 8086 is the work reversing the Gameboy SoC: https://github.com/furrtek/DMG-CPU-Inside
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GameRoy: a cross platform and highly accurate Game Boy emulator
First I would try to deduce the timing from this gate-level simulation of the game boy, but the master branch was broken at the time, so I didn't manage to compile it. So, I tried deducing it from its underling reverse engineered schematics, but it would take too much time, if it even was possible.
edge
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Gate level chip documentation?
There's an ongoing project like this for the Gameboy that aims to build a logic block level description of the CPU and peripherals. There's also an emulator that's in very early stages (not sure if it's working at all yet). There's another edge accurate GB emulator which I don't believe is released yet, but should be work in progress.
What are some alternatives?
metroboy - A repository of gate-level simulators and tools for the original Game Boy.
gameroy - A Game Boy emulator, disassembler and debugger, written in Rust
SameBoy - Game Boy and Game Boy Color emulator written in C
raw-gl-context - cross-platform OpenGL context creation
pandocs - New home of the infamous Pan Docs historical document: the single, most comprehensive Game Boy technical reference
gb-ctr - Game Boy: Complete Technical Reference
gb-research - Game Boy hardware research