Gearsystem is a very accurate, cross-platform Sega Master System / Game Gear / SG-1000 emulator written in C++ that runs on Windows, macOS, Linux, BSD and RetroArch.
* Accurate Z80 core, including undocumented opcodes and behavior like R and MEMPTR registers.
* Supported cartridges: ROM, ROM + RAM, SEGA, Codemasters, Korean, MSX + Nemesis, Janggun, SG-1000.
* Automatic region detection: NTSC-JAP, NTSC-USA, PAL-EUR.
* Accurate VDP emulation including timing and Master System 2 only 224 video mode support.
* Internal database for rom detection.
* Sound emulation using SDL Audio and Sms_Snd_Emu library.
* Battery powered RAM save support.
* Save states.
* Compressed rom support (ZIP).
* Game Genie and Pro Action Replay cheat support.
* Supported platforms (standalone): Windows, Linux, BSD, macOS, Raspberry Pi and iOS.
* Supported platforms (libretro): Windows, Linux, macOS, Raspberry Pi, Android, iOS, tvOS, PlayStation Vita, PlayStation 3, Nintendo 3DS, Nintendo GameCube, Nintendo Wii, Nintendo WiiU, Nintendo Switch, Emscripten, Classic Mini systems (NES, SNES, C64, ...), OpenDingux, RetroFW and QNX.
* Full debugger with just-in-time disassembler, cpu breakpoints, memory access breakpoints, code navigation (goto address, JP JR and CALL double clicking), debug symbols, memory editor, IO inspector and VRAM viewer including tiles, sprites, backgrounds and palettes.
* Windows and Linux Portable Mode by creating a file named portable.ini in the same directory as the application binary.
* Support for modern game controllers through gamecontrollerdb.txt file located in the same directory as the application binary.
platforms/windows/Gearsystem.sln
and build.platforms/windows/Makefile
to build the application using MinGW.xcode-select --install
in the terminal for the compiler to be available on the command line.brew install sdl2
cd platforms/macos
make dist
sudo apt-get install build-essential libsdl2-dev libglew-dev libgtk-3-dev
cd platforms/linux
make
sudo dnf install @development-tools gcc-c++ SDL2-devel glew-devel gtk3-devel
cd platforms/linux
make
su root -c "pkg install -y git gmake pkgconf SDL2 glew lang/gcc gtk3" cd platforms/bsd gmake
su root -c "pkgin install gmake pkgconf SDL2 glew lang/gcc gtk3" cd platforms/bsd gmake
sudo apt-get install build-essential
cd platforms/libretro
make
sudo dnf install @development-tools gcc-c++
cd platforms/libretro
make