I'm just about finished with my bartop and Retropie is up and running. I just installed a zero delay encoder and mapped my controls (one joy, 6 action buttons, 4 admin buttons) but I'm not sure how to change basic behavior...
During initial mapping process, I set the 6 buttons set to:
Y X L
B A R
And the front 4 buttons to:
L2 --- Select-Start --- R2
The "Hot Key" is Select. Exiting games is mapped to Select+Start (not obvious). Ideally I''d like it to be L2 (hold down for 1500 milliseconds) but I'm not sure how to reconfigure things.
Also, on a per emulator or even per game basis I'd like the controls to be different. I was just playing Super Punch-Out!! and Y is left punch and B is right punch, which is dumb - it should be B for left punch, A for right punch and R for the super punch (with the top row of buttons not being used).
I assume once I learn how to change things it will just be time consuming to get all the games set up, which I can live with but I need someone to point me in the right direction.