thelolagemann / gomeboy

Game Boy emulator written in golang

gomeboy

GomeBoy is my attempt at creating a fairly accurate and reasonably performant Game Boy emulator written with golang. It is still currently in the very early stages of development, but it is already capable of running quite a few games with varying degrees of success.

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Screenshots

DMG Games

DMG Games running on CGB hardware

CGB Games

Peripherals (Printer)

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Features

• GameBoy (DMG) and GameBoy Color (CGB) support
• SRAM and RTC support
• Run DMG games with CGB colorization palettes (without using a boot ROM)
• Automated testing against a large number of test ROMs
• Peripherals
  • Cartridge Mappers
    • MBC1
    • MBC2
    • MBC3
    • MBC5
    • ROM
  • Cheat Carts
    • Game Genie
    • GameShark
  • Serial
    • Printer
    • Link Cable
    • Local Multiplayer (needs reimplementation)
• Platform-agnostic (runs on Windows, Linux, and Mac)

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Automated Test Results

Test Suite	Pass Rate	Tests Passed	Tests Failed	Tests Total
acid2	75%	3	1	4
bully	50%	1	1	2
blarrg	100%	43	0	43
little-things-gb	100%	4	0	4
mooneye	98%	112	2	114
samesuite	14%	11	67	78
scribbltests	100%	5	0	5
strikethrough	0%	0	2	2

^{Visit the tests directory for more information.}

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TODO

• build instructions
• github actions
• improve error handling and logging
• expose more emulator options to the user
• reimplement link cable & local multiplayer