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Gearcoleco Git (2026/05/04) is an open-source, highly accurate Cross-platform emulator for ColecoVision, developed in C++. It supports multiple operating systems, including Windows, macOS, Linux, BSD, and Raspberry Pi, as well as various platforms through libretro. Key features include an accurate Z80 core, TMS9918 emulation, sound emulation via SDL Audio, and save states. The emulator also hosts a comprehensive debugger, offering tools like a just-in-time disassembler and memory access breakpoints. Recent updates focused on enhancing debugger functionalities and fixing texture upload size issues. Support for modern game controllers is also included.
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Gearcoleco Git (2026/05/04) has been compiled. Gearcoleco is an exceptionally accurate cross-platform ColecoVision emulator developed in C++, compatible with Windows, macOS, Linux, BSD, Raspberry Pi, and RetroArch. This open-source project thrives on the continuous contributions from its fantastic backers.
Key Features:
Highly accurate Z80 core that includes undocumented opcodes and behaviors, such as R and MEMPTR registers.
Precise TMS9918 emulation.
Sound emulation utilizing SDL Audio and the Sms_Snd_Emu library.
Save state functionality.
Zip file support for compressed ROMs.
Supported platforms (standalone): Windows, Linux, BSD, macOS, and Raspberry Pi.
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.
Comprehensive debugger featuring a just-in-time disassembler, CPU breakpoints, memory access breakpoints, code navigation (via double-clicking JP, JR, and CALL), debug symbols, memory editor, I/O inspector, and VRAM viewer, which includes registries, tiles, sprites, and backgrounds.
Portable Mode for Windows and Linux by creating a file named portable.ini in the same folder as the application binary.
Compatibility with modern game controllers through a gamecontrollerdb.txt file located alongside the application binary.
Gearcoleco Changelog:
* Fixed texture upload buffer size. #98
* [Debugger] Updated memory editor
* [Debugger] Validated memory search address
* [Debugger] Strengthened memory watch
* [Debugger] Enhanced memory selection
* [Debugger] Prevented reads from interfering with emulation
* Added option to allow Up+Down / Left+Right input
