So I am trying to get the game Sundance mapped with two keyboards. It works fine but when you press more than one button at once, some strange things happen that I won't detail here. I submitted this to MAME Testers. Haze suggested that perhaps the original game only allowed one input at a time which could be possible.
Anyway, using the "not" command I can get it to work just about perfectly. MAME allows me to map a key as well as seven "not" keys for each input. For it to be perfect, I would need to map eight "not" keys (3x3 grid of keys, 9 total). Is there any way to increase the number allowed per input?
View my gameplay videos:
Light Gun Games with Aimtrak
Trackball Games with X-Arcade Trackball
Star Wars Episode 1 Racer with Dual Throttle Controls