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Gearboy Git (2026/04/30) is a Nintendo Game Boy emulator developed in C++, prioritizing source code readability while maintaining good compatibility. Key features include accurate CPU and memory emulation, support for various Memory Bank Controllers, and precise LCD controller emulation that mimics original Game Boy ghosting effects. It also offers sound emulation, Game Boy Color support, an integrated disassembler, and features like save states, battery RAM file saving, and cheat support. Gearboy runs on multiple platforms, including Windows, Linux, and iOS, and serves as a libretro core for RetroArch. The update adds an emulator version to the changelog.
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Gearboy Git (2026/04/30) has been compiled. Gearboy is an emulator for the Nintendo Game Boy, developed in C++. It emphasizes code readability while maintaining excellent compatibility. Considerable effort has been put into adhering to OOP principles and keeping the design straightforward.
Key Features of Gearboy:
– Precise CPU emulation, passing cpu_instrs.gb according to blargg’s tests.
– Accurate timing for instructions and memory, passing instr_timing.gb and mem_timing.gb from blargg’s tests.
– Support for Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), alongside ROM + RAM and multicart cartridges.
– Detailed emulation of the LCD controller, including background, window, and sprite handling with proper timings and priorities, including mid-scanline timing.
– Frame mixing: Simulates the original Game Boy’s LCD ghosting effect.
– Audio emulation via SDL Audio and the Gb_Snd_Emu library.
– Compatibility with Game Boy Color.
– Built-in disassembler, capable of dumping disassembled memory into a text file or accessing it live.
– Ability to save battery-powered RAM cartridges to files.
– Save states feature.
– Support for compressed ROMs (ZIP deflate).
– Cheat support for Game Genie and GameShark.
– Cross-platform compatibility: Operates on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* [mcp] Include emulator version for media retrieval
