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Gearboy Git (2026/05/17) is a C++ Nintendo Game Boy emulator focusing on readable source code and good compatibility. Key features include highly accurate CPU and memory emulation, support for various Memory Bank Controllers, and precise LCD controller emulation. It mimics the original Game Boy’s ghosting effects and includes sound emulation via SDL Audio. The emulator supports Game Boy Color, integrated disassembler, and battery save features. It runs on multiple platforms, including Windows, Linux, Mac OS X, and iOS. Recent updates addressed save state issues and improved functionality. Download available for the latest version.
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Gearboy Git (2026/05/17) has been compiled. Gearboy is a Nintendo Game Boy emulator developed in C++. The emphasis is on the clarity of the source code, yet it offers solid compatibility. Significant effort has been made to adhere to OOP principles while keeping the design straightforward.
Gearboy Features:
– Extremely precise CPU emulation, successfully passing cpu_instrs.gb from blargg’s tests.
– Accurate instruction and memory timing, passing 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.
– Exact emulation of the LCD controller, handling backgrounds, windows, and sprites with correct timings and priorities, including mid-scanline timing.
– Frame mixing: Simulates the LCD ghosting effect characteristic of the original Game Boy.
– Sound emulation implemented using SDL Audio and the Gb_Snd_Emu library.
– Compatibility with Game Boy Color.
– Built-in disassembler that can export the entire disassembled memory to a text file or access it in real time.
– Ability to save battery-powered RAM cartridges to a file.
– Supports save states.
– Recognizes compressed ROMs (ZIP deflate).
– Includes support for Game Genie and GameShark cheats.
– Cross-platform compatibility. Functions on Windows, Linux, Mac OS X, Raspberry Pi, iOS, and as a libretro core (RetroArch).
Gearboy Git Changelog:
* [libretro] Addressed issues with malformed save state loading.
* Compliance with rewind settings during buffer allocation.
* Corrected save file path separator.
