It's been my impression that it is against the P99 rules to map your joystick/gamepad/keyboard buttons to multiple button presses (or mouse movements/clicks). In other words, if you map the "A" button on your controller to "2", that's ok, but if you map it to "2, 3, wait 5ms, 2 again" that's illegal automation.
However, I've scoured the rules and the forums, and the closest I can find to any sort of official response on the issue is this post from Rogean, which was directed more towards log parsers:
http://www.project1999.com/forums/sh...90&postcount=5
Can anyone point me to a GM post, line in the rules that I missed, or anything like that that shows that multiple-button mappings are prohibited? Or allowed for that matter; either way I'd just like to have some sort of clarification that I can point people to in the wiki.