Reply To: Help configuring controller under lr-mupen64plus

[brunchero]

In the libretro code there is a descriptor, which I’d expect explains the internal mapping, after line 70:
https://github.com/libretro/mupen64plus-libretro/blob/master/mupen64plus-core/src/plugin/emulate_game_controller_via_libretro.c

L2 should be the Z-Trigger then, and R2 could switch between “C-Stick” and “C-Buttons” (A,B,X,Y) mode.

Controls Default looks like to be what is configured. Should be on SELECT. Instead, Controls Alternate appears to define a ROM-specific mapping.