I have my Batocera machine plugged into my TV like a console. I use controllers only (8bitdo SF) and don't like using a keyboard, unless as a one off to change settings etc via F1.
Anyway, do any of the keyboard systems (Atari 5200, Amiga 500 etc) work with a controller? C64 is a little different as the emulator uses a virtual keyboard, so that runs fine. Any of the others? If so, how would I configure/set-up?