herbfargus
Member
Post count: 1858

see this page: https://github.com/RetroPie/RetroPie-Setup/wiki/Game-Boy-Advance

F10 lets you access the menu in GPSP

Alternatively you can press x or m as the rom loads and change the default emulator to lr-gpsp which supports the default hotkeys with retroarch (select+right bumper= save, select+left bumper= load)