Most of the time the "extra" registers can just be ignored until you need them. There are exceptions but since you're already using the ADC you're going to have to deal with its setup anyway. More advanced chips will have more CONFIG settings but PBP has a default setting for every chip so they will "just run" out of the box as long as you use the oscillator type that the chip expects based on the default CONFIG.

Don't take for granted that just because it has an internal oscillator that's what PBP is using in the default CONFIG.

Did you look at any of the ones in my previous post?

/Henrik.