@burts_19 As quoted in this mini-tutorial in this post in French:
https://forum.recalbox.com/topic/21653/pi4-recalbox-7-x-mupen64plus-bug-enregistrement-du-mapping-dans-retroarch/100 https://forum.recalbox.com/topic/21653/pi4-recalbox-7-x-mupen64plus-bug-enregistrement-du-mapping-dans-retroarch/65I try to translate into English:
Create an overload for n64, (.retroarch.cfg) in the n64 folder: \\RECALBOX\share\roms\n64\.retroarch.cfg
Inside this file, add the line:
input_autodetect_enable = true
Open an N64 game (libretro mupen64plus, cannot be the standalone emulator), access the Retroarch menu (just press Hotkey + B during a game)
Go to: Main Menu/Configuration File --> Reset to Defaults
Go to: Settings/Input/Port 1 Controls --> Reset to Defaults Controls
Remap the buttons one by one, but don't put anything for the pad, and put the directional in the "Control Stick X left + right" and "Control Stick Y down + up"
Save Controller Profile: Main Menu / Quick Menu / Controls / Port 1 Controls
Save Content Directory Remap File ("Save automatic configuration": this creates a file for you in \\RECALBOX\share\system\configs\retroarch\inputs)
Quit RetroArch
Restart the game and test.
I can't test this right now, but it looks like it worked for the user and other users, so I recommend that you test it. Any doubt check the original post, maybe I translated something wrong since I haven't tested it.