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Gearboy Git (2026/02/03) is a C++ Nintendo Game Boy emulator that emphasizes source code readability while maintaining good compatibility. Key features include highly accurate CPU emulation, precise instruction and memory timing, support for various Memory Bank Controllers, and realistic LCD emulation with effects like ghosting. It also includes sound emulation via SDL Audio, Game Boy Color support, an integrated disassembler, battery-saving functionality, save states, and cheat code support. Gearboy runs on multiple platforms, including Windows, Linux, Mac OS X, Raspberry Pi, and iOS, and functions as a libretro core for RetroArch. The latest update addresses vsync issues across multiple monitors.
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Gearboy Git (2026/02/03) has been compiled. Gearboy is a Game Boy emulator developed in C++. This emulator emphasizes source code readability while maintaining impressive compatibility. Significant effort has been dedicated to adhering to OOP principles while keeping the design straightforward.
Gearboy Features:
– Highly accurate 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.
– Supports Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), along with ROM + RAM and multicart cartridges.
– Precise LCD controller emulation, covering backgrounds, windows, and sprites, with correct timings and priorities, including mid-scanline timing.
– Frame mixing: Replicates the LCD ghosting effect seen on the original Game Boy.
– Sound emulation via SDL Audio and the Gb_Snd_Emu library.
– Compatible with Game Boy Color.
– Integrated disassembler capable of dumping the entire disassembled memory to a text file or accessing it in real-time.
– Saves data from battery-powered RAM cartridges to file.
– Supports save states.
– Compressed ROM support (ZIP deflate).
– Compatibility with Game Genie and GameShark cheats.
– Cross-platform: Operates on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* Fixed V-Sync issues when transitioning across multiple monitors
