Reply To: Need help with wired Xbox 360 controller

[Anonymous]

NES uses retroarch.cfg
SNES should use retroarch.cfg if you haven’t changed emulators.
GameBoy Colour uses retroarch.cfg
Playstation uses retroarch.cfg

Gameboy Advance does not use retroarch.cfg, it uses the emulator gpsp.
The files for it are located at > /home/pi/RetroPie/emulators/gpsp/raspberrypi

GPSP has a hardcoded menu button, press Select + R and it will bring up a GUI, you can then adjust all the settings, and exit the emulator.