I recently played a little bit with quite naive and simple prompts like "convert this DOS game to run using SDL without dosbox" and in quite a few cases it made a good plan for porting using a custom tailored x86 16bit real mode emulator and then hooking IO on modern foundation and then having it port to some modern language (a few experiments in C++, some Rust) For some games I didn't get to a working state, but for many, especially around transition to VGA, where EGA/CGA had been supported too, they seem to have somewhat isolated and simple graphics for this to work with an okayish amount of tokens.