While most controller mapping happens in EmulationStation, specific emulator behaviors (like AdvanceMAME axis inversion) are set here using advmame_invert_axis=0 Menu Style:
Maya's goal was simple and stubborn: she wanted every game she loved to scale correctly on the tiny screen without stretching sprites into mush. Past attempts had left some games crisp and others blurred, like a museum where some paintings were hung straight and others crooked. She scrolled to the video settings and found the culprit: an ambiguous option called "screen_mode = auto" that left scaling decisions to the system. emuelec config file
global.maxperf=1 : Enables maximum GPU and performance settings globally. : emuelec config file
nas.mount.enabled=1 nas.server.ip=192.168.1.200 nas.server.share=RetroRoms nas.mount.dir=/storage/roms/nas emuelec config file
These lines control how EmuELEC starts up.