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Gearboy Git (2026/05/01) is a Nintendo Game Boy emulator developed in C++. It emphasizes source code readability while ensuring good compatibility. Key features include accurate CPU and memory timing, support for various Memory Bank Controllers (MBC), and a realistic LCD controller emulation. It also emulates sound using SDL Audio, supports Game Boy Color, and offers an integrated disassembler. Additional functionalities include battery-powered RAM saving, save states, compressed ROM support, and cheat options. Gearboy runs on multiple platforms like Windows, Linux, and iOS. Recent updates added audio volume options and a mute shortcut. Download is available.
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Gearboy Git (2026/05/01) has been compiled. Gearboy is a C++ emulator for the Nintendo Game Boy. It emphasizes source code readability while also achieving good compatibility. Significant effort has been invested to adhere to OOP principles while maintaining simplicity.
Features of Gearboy:
– Precise CPU emulation, successfully passes cpu_instrs.gb from blargg’s tests.
– Accurate instruction and memory timing, 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.
– Realistic LCD controller emulation, handling background, window, and sprites with correct timings and priorities including mid-scanline timing.
– Frame mixing: Simulates the LCD ghosting effect from the original Game Boy.
– Sound emulation via SDL Audio and the Gb_Snd_Emu library.
– Compatible with Game Boy Color.
– Built-in disassembler, capable of dumping the entire disassembled memory to a text file or accessing it in real time.
– Saves for battery-powered RAM cartridges to a file.
– Save states feature.
– Supports compressed ROMs (ZIP deflate).
– Cheat support for Game Genie and GameShark.
– Cross-platform support: Operates on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* Updated readme
* Added master volume audio option
* Introduced shortcut to mute audio
* Added master volume audio option. Fix #219
