Mame4all possible buttons are reversed: A and B

[SinisterSpatula]

Something I noticed while testing arcade games on mame4all (using recommended 037b romset), it seems like the "a" and "b" buttons should be swapped. For example, every arcade pinball game I've tried so far has "A" triggering the left flipper and "B" triggering the right flipper. Also other games with directional button based firing, like load runner and tutankham have the same issue where you hit the button on the left and it shoots right, and Visa versa, like it's inverted. There are also other games that require specific controller configs, like smash tv to mimic dual joysticks with the D-pad and face buttons. Is there a way that game specific configs can be included in controller update?

[SinisterSpatula]

After looking at control panels of arcade cabinets, I believe they were indeed reversed. I've swapped them now.