Emu198x vs Gearsystem

Emu198x is a free, open-source emulator suite for running vintage computers and consoles through JSON scripts or an MCP client. Its registry lists 30 machines, with boot captures available for 29. Scripts can automate actions such as advancing frames, querying a CPU register, and saving a screenshot; documentation also describes capturing frame sequences and audio. Each machine binary can act as an MCP server, exposing tools to run frames, inspect state, handle input, and capture output. Clients connect over standard input and output using JSON-RPC. The maker says repeating a script produces an identical report and byte-for-byte matching screenshot. Release archives are provided for Windows, Linux, and macOS, including separate Apple silicon and Intel Mac builds. Emu198x does not supply commercial ROMs, firmware, disks, tapes, or cartridges, so users must provide required files. The accuracy page reports crate counts and boot-capture status rather than percentages or maturity scores, and SHA-256 sums are available to check downloads.

Gearsystem has no write-up on Specifiction yet; its figures are above.