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?

[awesomez]

Definitely seconded on this control scheme.