n64 controller to snes button mapping

[rupestre-campos]

Hi everyone, first thanks for this incredible project! N64 is now the best console ever for me. I would like to know if there is a simple way to change button mappings because it is very hard to not press A on n64 controller and hit snes start pausing game at critical points. Kids struggle even more. So I would love to know if there is any means that I could remap some buttons like n64 -> snes A -> B B -> Y left-c -> X down-c -> A right-c -> toggle FPS up-c -> Select Start -> Start z -> toggle Sprites L, R -> L,R Dpad -> Dpad

I have checked code in inputs but it is way too deeper for me to change and compile myself. Can you help on this topic?