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Gearboy Git (2026/05/05) is a Nintendo Game Boy emulator written in C++, emphasizing code readability while maintaining high compatibility. Key features include highly accurate CPU and memory timing emulation, support for multiple Memory Bank Controllers, precise LCD controller emulation, sound playback via SDL Audio, and Game Boy Color support. It also features an integrated disassembler, save states, and supports compressed ROMs and cheat codes. Gearboy runs on various platforms, including Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core for RetroArch. The latest update improves publishing workflows and file dialog focus.
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Gearboy Git (2026/05/05) has been compiled. Gearboy is a Nintendo Game Boy emulator developed in C++. The project emphasizes the clarity of its source code while maintaining solid compatibility. Significant effort has been dedicated to adhering to OOP principles and keeping the design straightforward.
Features of Gearboy:
– Highly precise CPU emulation, successfully passing cpu_instrs.gb from blargg’s tests.
– Accurate instruction and memory timing, passing instr_timing.gb and mem_timing.gb from blargg’s tests.
– Support for Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), ROM + RAM and multicart cartridges.
– Detailed emulation of the LCD controller. Background, window, and sprites are handled with accurate timings and priorities, including mid-scanline timing.
– Frame mixing: Emulates the LCD ghosting effect found in the original Game Boy.
– Sound emulation leveraging SDL Audio and the Gb_Snd_Emu library.
– Support for Game Boy Color.
– Built-in disassembler that can export a complete disassembled memory to a text file or access it in real-time.
– Ability to save battery-powered RAM cartridges to a file.
– Save states feature.
– Supports compressed ROMs (ZIP deflate).
– Compatibility with Game Genie and GameShark cheats.
– Multi-platform support. Operates on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and functions as a libretro core (RetroArch).
Changelog for Gearboy Git:
* Updated the publish workflow for MCP registry.
* Restored focus after using native file dialogs.
