Hello 
I’m using the excellent RetroArch 1.0.0.1 and all works perfectly except the virtual Pad on the Mupen64 emulator !? the buttons work well but not the virtual stick (no left, no right,…) i try many overlays (snes.cfg,…) and nothing works 
Thank you for helping me 
Switch to the N64 overlay, which (I think) defaults to an analog stick. If not, there’s an overlay button that will switch back and forth between analog stick and dpad.
Hello,
Indeed, you have to choose the N64 overlay and be careful of one virtual button that switch from tha analog pad to the “cross pad”
Thank you