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Gearboy Git (2026/04/27) is a Nintendo Game Boy emulator developed in C++. It prioritizes readable source code while ensuring good compatibility. Key features include accurate CPU and memory timing, support for various memory bank controllers, and precise LCD emulation that mimics original ghosting effects. It also offers sound emulation, Game Boy Color support, an integrated disassembler, save states, cheat support, and multi-platform capability, running on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core. Recent updates focused on simplifying shared functions and improving debugger stability. Download is available for the latest version.
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Gearboy Git (2026/04/27) has been compiled. Gearboy is a Nintendo Game Boy emulator developed in C++. It emphasizes the clarity of the source code while maintaining solid compatibility. Significant effort has been put into adhering to OOP principles and simplifying the overall design.
Gearboy Features:
– Highly precise CPU emulation, successfully executes cpu_instrs.gb from blargg’s tests.
– Accurate timing for instructions and memory, passes both instr_timing.gb and mem_timing.gb from blargg’s tests.
– Supports Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), as well as ROM + RAM and multicart cartridges.
– Faithful LCD controller emulation, including background, window, and sprites, with correct timing and priority handling, including mid-scanline timing.
– Frame mixing: Imitates the LCD ghosting effect present in the original Game Boy.
– Sound emulation utilizing SDL Audio and the Gb_Snd_Emu library.
– Compatibility with Game Boy Color.
– Built-in disassembler, capable of dumping the complete disassembled memory to a text file or accessing it in real time.
– Saves RAM cartridges powered by battery to a file.
– Save states functionality.
– Supports compressed ROM formats (ZIP deflate).
– Cheat support for Game Genie and GameShark.
– Multi-platform compatibility, running on Windows, Linux, macOS, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* Streamlined shared helper clamping
* Merged shared utility
* [mcp] Avoid debugger disassembly stalls
* Exclude option values in argument parsing
