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Gearboy Git (2026/04/14) is a C++ Nintendo Game Boy emulator emphasizing readability and simplicity while offering good compatibility. Key features include highly accurate CPU emulation, precise instruction and memory timing, support for multiple Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), and accurate LCD and sound emulation. It supports Game Boy Color, integrated disassembler, save states, and Game Genie/GameShark cheats. Gearboy runs on various platforms, including Windows, Linux, Mac OS X, Raspberry Pi, and iOS, also functioning as a libretro core for RetroArch. The latest update addresses fixes in MBC7 EEPROM functionalities.
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Gearboy Git (2026/04/14) has been compiled. Gearboy serves as a Nintendo Game Boy emulator built in C++. This emulator prioritizes the readability of its source code while still offering impressive compatibility. Significant effort has been invested to adhere to OOP principles while maintaining simplicity.
Key Features of Gearboy:
– Exceptional CPU emulation accuracy, passes cpu_instrs.gb from blargg’s assessments.
– Precise instruction and memory timing, passes instr_timing.gb and mem_timing.gb from blargg’s evaluations.
– Support for Memory Bank Controllers (MBC1, MBC2, MBC3 with RTC, MBC5), along with ROM + RAM and multicart cartridges.
– Faithful LCD controller emulation, including background, window, and sprites with accurate timings and priorities, encompassing mid-scanline timing.
– Frame mixing: Replicates the LCD ghosting effect observed in the original Game Boy.
– Sound emulation utilizing SDL Audio and Gb_Snd_Emu library.
– Compatibility with Game Boy Color.
– Built-in disassembler capable of dumping the entire disassembled memory to a text file or accessing it in real time.
– Ability to save RAM from battery-powered cartridges to a file.
– Save state functionality.
– Supports compressed ROMs (ZIP deflate).
– Cheat support for Game Genie and GameShark.
– Multi-platform support, running on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Changelog for Gearboy Git:
* Corrected MBC7 EEPROM write-all and ready bits.
