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Gearboy Git (2026/05/14) is a Nintendo Game Boy emulator developed in C++ with a focus on source code readability and compatibility. It features highly accurate CPU emulation, proper instruction and memory timing, and supports various Memory Bank Controllers (MBCs). The emulator accurately replicates the LCD and sound emulation using SDL Audio, includes Game Boy Color support, and integrates an interactive disassembler. Additionally, it supports battery-powered RAM saves, save states, compressed ROMs, and cheat codes. Gearboy runs on multiple platforms, including Windows, Linux, macOS, iOS, and as a libretro core for RetroArch.
Gearboy Git (2026/05/14) has been compiled. Gearboy is an emulator for the Nintendo Game Boy, developed using C++. The emulator prioritizes source code readability while maintaining strong compatibility. Significant effort has been invested to adhere to OOP principles while ensuring simplicity.
Gearboy Features:
– Highly accurate CPU emulation, successfully passing cpu_instrs.gb from blargg’s tests.
– Precise 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), supporting ROM + RAM and multicart cartridges.
– Accurate emulation of the LCD controller, including background, window, and sprites, with correct timing and priorities, including mid-scanline timing.
– Frame mixing: Simulates the LCD ghosting effect reminiscent of the original Game Boy.
– Sound emulation utilizing SDL Audio and the Gb_Snd_Emu library.
– Game Boy Color compatibility.
– Built-in disassembler for dumping full disassembled memory to a text file or accessing it in real time.
– Saves for battery-powered RAM cartridges are stored to a file.
– Save states functionality.
– Compressed ROM support (ZIP deflate).
– Support for Game Genie and GameShark cheats.
– Multi-platform compatibility. Runs on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* [debugger] Added Load Memory From Binary
