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GearSystem Git (2026/04/05) is a multi-platform Sega Master System/Game Gear emulator coded in C++. It emphasizes source code readability and offers high compatibility across iOS, Raspberry Pi, Mac, Windows, and Linux. Key features include an accurate Z80 core, multi-mapper support, external RAM with save files, automatic region detection, SMS2 224 mode support, an internal ROM detection database, and sound emulation using SDL Audio. The emulator supports compressed ROMs and includes an integrated disassembler. Recent updates addressed savestate loading from any platform, build fixes, and memory leak issues. Download available via provided link.
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GearSystem Git (2026/04/05) has been compiled. GearSystem is a Sega Master System / Game Gear emulator developed in C++ that operates on iOS, Raspberry Pi, Mac, Windows, and Linux. This emulator emphasizes the clarity of source code while ensuring high compatibility.
Features:
– Highly precise Z80 core.
– Multi-Mapper support for SEGA, Codemasters, and ROM-only cartridges.
– External RAM support with saved files.
– Automatic region identification: NTSC-JAP, NTSC-USA, PAL-EUR.
– SMS2-exclusive 224 mode compatibility.
– Internal database for ROM detection.
– Sound emulation utilizing SDL Audio and the Sms_Snd_Emu library.
– An integrated disassembler that can dump full disassembled memory to a text file or provide real-time access.
– Compressed ROM support (ZIP deflate).
– Cross-platform compatibility; works on Windows, Linux, Mac OS X, Raspberry Pi, and iOS.
GearSystem Git changelog:
* Enables loading savestates across all platforms
* Builds fixed
* Masks MSX mapper bank register to match ROM size
* Addresses TMS9918 sprite VRAM out-of-bounds read
* Fixes bootrom memory leak during repeated loads
