Gearboy and Gearsystem
These are ecosystem siblings—both are standalone emulator/debugger MCP servers built on the same architecture by the same author, each targeting a different classic gaming console, allowing users to debug Game Boy and Sega Master System games respectively through compatible MCP clients.
About Gearboy
drhelius/Gearboy
Game Boy / Gameboy Color emulator, debugger and embedded MCP server for macOS, Windows, Linux, BSD and RetroArch.
Implements cycle-accurate CPU and LCD emulation with support for multiple MBC cartridge types, mid-scanline effects, and battery-backed RAM. Features a comprehensive debugger with jit disassembly, breakpoints, memory inspection, and symbol file support (RGBDS, GBDK-2020, WLA-DX formats). Includes an embedded MCP server exposing execution control and hardware introspection for AI-assisted debugging with Claude and ChatGPT, plus libretro core integration for RetroArch.
About Gearsystem
drhelius/Gearsystem
Sega Master System / Game Gear / SG-1000 emulator, debugger and embedded MCP server for macOS, Windows, Linux, BSD and RetroArch.
Implements cycle-accurate Z80/VDP/PSG emulation with extensive debugging capabilities including breakpoints, memory inspection, and a Model Context Protocol (MCP) server for AI-assisted development workflows. Supports multiple cartridge formats and region variants with automatic detection, plus compression, cheats, save states, and VGM recording. Available as a standalone application across desktop platforms and as a Libretro core for RetroArch and embedded systems.
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