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Gearboy Git (2026/04/08) is a Nintendo Game Boy emulator developed in C++. It prioritizes code readability and offers strong compatibility. Key features include accurate CPU emulation, memory timing, and support for various Memory Bank Controllers (MBCs). It also simulates the LCD ghosting effect, provides sound emulation, and supports Game Boy Color. The emulator includes an integrated disassembler, save states, and Game Genie/GameShark cheat functionalities. Gearboy runs on multiple platforms, including Windows, Linux, Mac OS X, Raspberry Pi, and iOS, and is available as a libretro core for RetroArch. The latest update removed a dead aspect ratio.
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Gearboy Git (2026/04/08) has been compiled. Gearboy is an emulator for the Nintendo Game Boy, developed in C++. This emulator prioritizes code readability while maintaining strong compatibility. Significant effort was invested in adhering to OOP principles while keeping the design simple.
Key Features of Gearboy:
– Highly accurate CPU emulation, successfully passing cpu_instrs.gb from blargg’s benchmarks.
– Precise instruction and memory timing, passing instr_timing.gb and mem_timing.gb also from blargg’s benchmarks.
– Support for Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), alongside ROM + RAM and multicart cartridges.
– Accurate LCD controller emulation, including background, window, and sprite rendering, with correct timing and priorities, including mid-scanline timing.
– Frame mixing: Simulates the LCD ghosting effect recognized in the original Game Boy.
– Sound emulation utilizing SDL Audio and the Gb_Snd_Emu library.
– Support for Game Boy Color.
– Built-in disassembler, capable of dumping the entire disassembled memory into a text file or accessing it in real-time.
– Ability to save battery-powered RAM cartridges to a file.
– Save states functionality.
– Compressed ROM support (ZIP deflate).
– Compatibility with Game Genie and GameShark cheats.
– Multi-platform: Operates on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* Removed obsolete aspect ratio
