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GearSystem Git (2026/05/18) is a Sega Master System/Game Gear emulator written in C++ that supports iOS, Raspberry Pi, Mac, Windows, and Linux. Emphasizing source code readability, it offers a highly accurate Z80 core, multi-mapper support, external RAM with save files, and automatic region detection (NTSC-JAP, NTSC-USA, PAL-EUR). Additional features include SMS2 mode support, an internal database for ROM detection, sound emulation via SDL Audio and Sms_Snd_Emu, an integrated disassembler, and compressed ROM support. Recent changes include debugging sound queue traces and graying out menu items when no media is loaded. Download available.
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GearSystem Git (2026/05/18) has been compiled. GearSystem is a Sega Master System / Game Gear emulator developed in C++ that is compatible with iOS, Raspberry Pi, Mac, Windows, and Linux. This emulator emphasizes code readability while maintaining excellent compatibility.
Key Features:
– Extremely accurate Z80 core.
– Multi-Mapper compatibility: SEGA, Codemasters, and ROM-only cartridges.
– External RAM support with saving capabilities.
– Automatic region detection: NTSC-JAP, NTSC-USA, PAL-EUR.
– SMS2 exclusive 224 mode support.
– Built-in database for ROM detection.
– Sound emulation using SDL Audio and Sms_Snd_Emu library.
– Integrated disassembler, which can output the complete disassembled memory to a text file or access it in real-time.
– Compressed ROM support (ZIP deflate).
– Multi-platform: compatible with Windows, Linux, Mac OS X, Raspberry Pi, and iOS.
GearSystem Git changelog:
* Debug traces for gate sound queue
* Menu items are grayed out when no media is loaded
