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Gearboy Git (2026/05/04) is a Nintendo Game Boy emulator developed in C++, emphasizing source code readability while maintaining good compatibility. It features accurate CPU emulation, instructional and memory timing, support for various Memory Bank Controllers (MBCs), and precise LCD controller emulation. Additional functionalities include sound emulation with SDL Audio, Game Boy Color support, an integrated disassembler, save states, and compatibility with ZIP-compressed ROMs. It supports cheats and runs on multiple platforms, including Windows, Linux, Mac, Raspberry Pi, iOS, and as a libretro core. Recent updates include display buffer fixes and enhanced debugging tools.
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Gearboy Git (2026/05/04) has been compiled. Gearboy is a Nintendo Game Boy emulator developed in C++. It prioritizes code readability while maintaining good compatibility. Significant effort has been made to adhere to OOP principles and to keep the design straightforward.
Gearboy Features:
– Highly precise CPU emulation, 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.
– Accurate emulation of the LCD controller. Includes 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 using SDL Audio and the Gb_Snd_Emu library.
– Compatibility with Game Boy Color.
– Built-in disassembler, capable of dumping full disassembled memory to a text file or accessing it in real time.
– Saves data from battery-powered RAM cartridges to files.
– Save state functionality.
– Compressed ROM support (ZIP deflate).
– Supports Game Genie and GameShark cheats.
– Multi-platform compatibility, running on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* Fixed display buffer sizing and clearing
* [debugger] Updated memory editor
* [debugger] Validated memory search address
* [debugger] Strengthened memory watch
* [debugger] Enhanced memory selection
* Added option for Allow Up+Down / Left+Right
