I'm using Mame 0.120 (Oct 15 2007) . As I have yet to get around to building a cabinet, I'm still playing the games using a keyboard. The keyboard controls are set up so that CTRL and ALT are the "fire" buttons" and the directional arrows are the up/down/left/right.
If I press both CTRL+ALT and then press one of the directional keys, it rotates the screen in that direction. As you can imagine, this gets frustrating during game play if I hit that combo by accident.
I've looked through the MAME options and haven't been able to find anything that may indicate this as a keyboard option.
Any ideas? I tried searching the forums, but didn't turn up anything.