Gameboy Advance= gba see the wiki for each emulator and where to place the files:
https://github.com/retropie/RetroPie-Setup/wiki
You’ll also need the gba_bios.bin file placed in the BIOS folder (if you are running 2.6 or 3.0) you’ll need it in the core gpsp folder if you are running earlier versions of retropie.
