PS2 Controller - Gamecube

[SouthernRebel]

Hello guys,i'm having some troubles with the digital analog.I can configure both analogs (the normal and the C-Stick) but the digital dont seem to work.i'm using a USB Adapter with the ps2 controller to play.On the N64 emulator the digital is Pvo+ or something like this but in the dolphin it dont even recognize