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Gearboy Git (2026/05/03) is a Nintendo Game Boy emulator developed in C++, prioritizing readable source code while ensuring strong compatibility. Features include accurate CPU emulation, timing, support for various Memory Bank Controllers (MBCs), and advanced LCD emulation that replicates original Game Boy effects. Additional capabilities include sound emulation via SDL Audio, Game Boy Color support, an integrated disassembler, battery-backed RAM saving, save states, and cheat support. Gearboy is multi-platform, operating on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core for RetroArch. Recent changelog updates include GUI synchronization and improved memory initialization.
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Gearboy Git (2026/05/03) has been compiled. Gearboy is a Nintendo Game Boy emulator developed in C++. The primary goal of the emulator is to maintain readable source code while also achieving strong compatibility. Significant effort has been invested to adhere to OOP principles and to keep the design simple.
Gearboy Features:
– 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.
– Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), as well as support for ROM + RAM and multicart cartridges.
– Accurate LCD controller emulation. Proper functioning of background, window, and sprites, with correct timing and priorities, including mid-scanline timing.
– Frame mixing: Simulates the LCD ghosting effect found in the original Game Boy.
– Audio 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 to a text file or accessing it in real time.
– Capability 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:
* [mcp] Synchronize rewind with GUI
* Mark legacy pixel output as visible
* Initialize each entry in the color correction lookup table
* Reset all cartridge controllers during system reset
