MAME configuration - show on screen display

[Brad]

I had the R2 button mapped to show the on screen display in MAME for Input (General) but somehow the mapping was accidentally deleted... the kids were button mashing.

Is there any way of setting the mapping to R2 again?

Thanks

[Brad]

EDIT: All ok. I deleted all the cfg files under /recalbox/share/roms/mame/mame2003/cfg and power cycled the Pi.

The cfg files were recreated once I opened the game and R2 allowed me to show the menu again.