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Gearboy Git (2026/05/16) is a C++ Nintendo Game Boy emulator designed for readability and good compatibility. Key features include highly accurate CPU emulation, instruction and memory timing, support for multiple Memory Bank Controllers, accurate LCD emulation with ghosting effects, and sound emulation via SDL Audio. It also supports Game Boy Color, has an integrated disassembler, saves RAM to file, offers save states, and recognizes compressed ROMs (ZIP). Additional features include Game Genie/GameShark support and multi-platform compatibility, working on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core. Recent updates improved tool descriptions.
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Gearboy Git (2026/05/16) has been compiled. Gearboy serves as a Nintendo Game Boy emulator built in C++. It emphasizes the clarity of its source code while maintaining strong compatibility. Considerable care has been taken to adhere to OOP principles and to keep the design as straightforward as possible.
Gearboy Features:
– Highly precise CPU emulation, successfully running cpu_instrs.gb from blargg’s tests.
– Exact timing for instructions and memory, passing instr_timing.gb and mem_timing.gb from blargg’s tests.
– Support for Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), along with ROM + RAM and multicart cartridges.
– Precise emulation of the LCD controller. Background, window, and sprites are handled with correct timings and priorities, including mid-scanline timing.
– Frame mixing: Simulates the LCD ghosting effect found in the original Game Boy.
– Sound emulation via SDL Audio and the Gb_Snd_Emu library.
– Compatibility with Game Boy Color.
– Built-in disassembler that can output the complete disassembled memory to a text file or provide real-time access.
– Ability to save battery-powered RAM cartridges to file.
– Save states functionality.
– Support for compressed ROM files (ZIP deflate).
– Game Genie and GameShark cheat support.
– Cross-platform functionality. Runs on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* [mcp] Enhanced tool descriptions
