@JRay999

You're quite welcome! :D

@Dipkid ok, it worked I opened the controllers and realized that many buttons weren't on the same slots and one of my joysticks was upside down. Thanks for your help.

@kounabi22

ok found solution i change it.

I change the settings see if you can download it now guys.

I don't think the N64 emulator mapping are switched (each controller should have its own mapping), but rather that the most recent configured controller takes the place of P1 or they're just arranged alphabetically.

You can check this in the mupen64plus.cfg file and see the order in which they appear and their device index.

Thank you! That sent me in the right direction..... /opt/retropie/configs/all/emulationstation contains a file es_input.cfg. Just had to reverse the keyboard input IDs for Start and A button.