C64MINI / THEC64 - NES joystick to USB works on PC but not on C64Mini :(

[realspamster]

Hey there I had the great idea of using a Quickshot joystick designed for NES for the C64 Mini. I have successfully connected a Quickshot joystick for C64 to the C64mini, but the advantage of using the NES version is the additional buttons that can map to the "MENU" button that's on the C64mini's supplied joystick.

I am using RetroJoystickAdapter.ino with an Arduino Pro Micro and this works perfectly on a PC with emulators etc, but I cannot get this to work on the C64Mini. The closest I get is for the buttons to work but never the X and Y axis.

I have to use the following PID and VID in boards.txt for buttons to be recognised : VID: 22BA PID: 1020

If I use the suggested VID and PID, the C64Mini completely ignores the device.

Is anyone able to offer any pointers please? This reports as 2 devices but I'm cabled to port 1 and all works as expected on a Windows PC.