- There's a 32-bit build of Doom8088. It's twice as fast as the 16-bit build.
- I've made a quick hack that should work on a Tandy 1000 and it looks like this: https://www.youtube.com/watch?v=2RdrLXblnlU With CGA graphics it looks like this: https://www.youtube.com/watch?v=FUEcr7XnbuA And in monochrome: https://www.youtube.com/watch?v=5o3rYTZt6BM
Seriously, proper Tandy / CGA / EGA / Monochrome graphics is on the to-do list.
gopher://texto-plano.xyz/9/~anthk/doom/wads.zip
freedoom1.wad and freedoom2.wad are the Doom and Doom II IWAD replacements, freedm.wad it's for multiplayer matches.