@holmes I know it's not the same subject, but in the documentation about configuring controls, it mentions another way, have you taken a look?
/recalbox/configs/mupen64/mupen64plus.cfg-
Can't change video plugin (for rice) in Mupen N64 emulator, RSPi 5.
Recalbox General • a day ago • gelo29 a day ago -
Mupen stand-alone and 4/3aspect ratio
Emulator Arcade/PC/Console • 19 Feb 2022, 22:43 • holmes 28 Mar 2022, 22:50 -
Solved N64 (mupen) ne marche pas
Recalbox Général • 21 Oct 2019, 07:18 • Loulou30140 22 Oct 2019, 07:39 -
N64 Audio Lag / Mupen - Stocken / Libretro (auf dem odroidxu4)
Recalbox • 30 May 2019, 15:21 • Taurin 26 Jun 2019, 20:02 -
Xbox 360 controller reconnect problem on mupen 64 plus since recalbox 4.1
GamePad/GPIO/USB encoder • 18 Nov 2017, 14:06 • Felix Endemann 18 Nov 2017, 14:55