All,
I'm not sure this can be done but I have the attached picture setup for my control panel (don't ask why).
My question is can I set up the following default in MAME.
For 1 button games, use the right most button (fourth button) as primary, for 2 button games, use the third and fourth buttons and set the third button as primary, etc.
Esentially, I'd like to remap the button 1,2,3,4 assignments based on the CatVer information automatically so all assignments go left to right starting from the right.
I know this a really weird setup so I suspect the answer is no.