Looks like my 2 controllers are seen as js4 and js5, normally they are js0 and js1
pi@retropie:/dev/input $ ls -lah
total 0
drwxr-xr-x 4 root root 240 Feb 7 21:17 .
drwxr-xr-x 14 root root 3.2K Feb 7 21:17 ..
drwxr-xr-x 2 root root 100 Feb 7 21:17 by-id
drwxr-xr-x 2 root root 100 Feb 7 21:17 by-path
crw-rw—- 1 root input 13, 64 Feb 7 21:17 event0
crw-rw—- 1 root input 13, 65 Feb 7 21:17 event1
crw-rw—- 1 root input 13, 70 Feb 7 21:17 event6
crw-rw—- 1 root input 13, 71 Feb 7 21:17 event7
crw-rw—- 1 root input 13, 4 Feb 7 21:17 js4
crw-rw—- 1 root input 13, 5 Feb 7 21:17 js5
crw-rw—- 1 root input 13, 63 Feb 7 21:17 mice
crw-rw—- 1 root input 13, 32 Feb 7 21:17 mouse0
pi@retropie:/dev/input $
In mupen64plus.cfg I am editing [Input-SDL-Control1] and [Input-SDL-Control2]
Should I be creating ones for [Input-SDL-Control4] and [Input-SDL-Control5]?
Thanks