Many C64 games are happy with just a Joystick and a few keys from the keyboard (e.g. "Space" to start a game). A full keyboard is often not required.
Thanks to the new v2 firmware, it's relatively easy to reprogram the Picade controls to support something like this. I haven't tried yet, but I will attempt to create a "VICE" configuration soon.
What I need help on is this: How can I load the configuration into the Picade PCB whenever a VICE game starts, and reload my generic configuration as soon as the Retropie GUI loads again?
Has anyone tried something like this, possibly also with other emulators built into Retropie?