Thanks for the reply. My recalbox is running on a raspberry pi 3. I eventually got Doom running in DosBox but it's like 15 frames per second, its not really playable. So the only realistic option is to use prboom (good frame rate) but that is where I can't get the keyboard working.

So I love doom and want to play it with a keyboard, NOT A JOYSTICK. I am ripping my hair out trying to figure out how to make this work, and there probably is a solution but it is way too much effort to accomplish, what should be something simple and built in with the early versions of recalbox. Will keyboard only support for games be a thing in future updates?