[quote=101300]I don’t know of any way to change those configs but you could try switching to lr-mame4all for the default emulator- that uses retroarch configs
[/quote]
The global retroarch input configs use select as coin insert on Final Burn Alpha, but not in advance mame or mame4all. Without coin insert, everything else is useless. I can’t even use the start + select hotkeys to exit the game. From what I understand, configs are in /opt/retropie/configs with /all being global. My retroarch.cfg inputs look like this and I am using RPi2 V3 beta4 image.
Edit: Ok so I figured out default settings on RPi2 V3 beta4 doesn’t use lib retro mame4all.
/opt/retropie/configs/mame-mame4all/emulators.cfg
Change to default=”lr-imame4all”