Im trying to have Neo Geo games separated from mame games, and I found some issues:
-I have GnGeo fully working with ps3 controllers, but the fullscreen mode is not working. I tried -f in code, and the gngeorc file has fullscreen true and scale 2×50 effect.
-FBA works well but ps3 controllers don’t have DPAD support, and playing some games with analog controls sucks.
-Imame4all works well too with Neo Geo games (if the games are in MAME directory), but if I copy the code “COMMAND=/home/pi/RetroPie/emulators/RetroArch/installdir/bin/retroarch -L /home/pi/RetroPie/emulatorcores/imame4all-libretro/libretro.so –config /home/pi/RetroPie/configs/all/retroarch.cfg –appendconfig /home/pi/RetroPie/configs/mame/retroarch.cfg %ROM%” to the Neo Geo command line, it runs retroarch menu.