Looks as if I had a minor mix-up earlier with marqs and petrockblog. Sorry for that!
But anyway. Since I tried SNESDev-RPi, I have a problem accessing the SNES games. So I'm removing and reinstalling RetroPie right now to start with a fresh installation.
After adjusting to the GPIOs I am using, my keyboard got still set to capital letters after starting SNESDev and I also noticed that my shift-key stopped working.
Btw, I'm running the newest Raspbian on a rev.2 board. So you're right about the GPIOs, marqs (this time I'm not mixing things up, I hope
So, if I'm not mistaken, the default GPIOs for the Gamecon-driver are 1 and 4 on the revision 1 board, which would be P1-05 and P1-07. Since I've used the same pins on a revision 2 board, it's now GPIO 3 instead of 1, but shouldn't that be all right?!
I'll check if the second controller is working with gamecon as soon as possible.
Thanks for your help!