Dega vs Emu198x

Dega is an emulator for Sega Master System, Mark III, and Game Gear games. It runs on Windows and *NIX systems; its README names Windows 95, NT, 98, 2000, ME, and XP. The software is free for non-commercial use only, and the GitHub repository has no releases. Dega supports Python scripting for input, resets, movie playback and recording, and access to a running game's RAM. Python can be used as a module in another program or embedded in the emulator. The distribution includes memory.py, a Python memory viewer and trainer. Users can record a movie and continue recording later from a saved state. Windows provides save-state slots, and Dega also supports a gzip-compressed .dgz save-state format. Other features include loading ROMs from ZIP files, AVI encoding from movie files on *NIX, and Yamaha 2413 FM audio for machines equipped with that chip. It can also combine some games' flickering-glasses effect into a red-and-blue image for red/blue glasses. Technical information estimates compatibility at 97%.

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.