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Gearboy Git (2026/04/05) is a Nintendo Game Boy emulator written in C++, prioritizing source code readability while maintaining good compatibility. Key features include highly accurate CPU and memory timing, support for various Memory Bank Controllers, and accurate LCD controller emulation, including the original game’s ghosting effect. It also offers sound emulation, Game Boy Color support, an integrated disassembler, battery-backed RAM saving, save states, and support for compressed ROMs and cheats. Gearboy is multi-platform, running on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core. The latest update includes enhancements for loading savestates.
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Gearboy Git (2026/04/05) has been compiled. Gearboy is a Nintendo Game Boy emulator developed in C++. While the emulator prioritizes source code readability, it also maintains excellent compatibility. Great care has been taken to adhere to OOP principles while keeping the design straightforward.
Gearboy Features:
– Highly precise CPU emulation, successfully passes cpu_instrs.gb from blargg’s tests.
– Accurate timing for instructions and memory, successfully passes 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.
– Faithful emulation of the LCD controller, covering backgrounds, windows, and sprites, including accurate timings and priorities with mid-scanline timing.
– Frame mixing: Simulates the LCD ghosting effect seen in the original Game Boy.
– Sound emulation via SDL Audio and the Gb_Snd_Emu library.
– Compatibility with Game Boy Color.
– Built-in disassembler that can export the entire disassembled memory to a text file or access it live.
– Ability to save battery-powered RAM cartridges to a file.
– Save states functionality.
– Compressed ROM support (ZIP deflate).
– Compatibility for Game Genie and GameShark cheats.
– Multi-platform support, running on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* Added support for loading savestates across any platform.
