The reference section has been significantly improved with following topics added:

I’m particularly excited about the breadboard section, as it opens up the Apple II to easy HW prototyping.

SUPERPROTO connected to breadboard

A couple of years ago, James LittleJohn had offered a card (LittleProto II) with a breadboard built onto it. I think that the approach of a separate breadboard will allow you to easily work on your design, then when you feel that it is solid, move it permanently to the proto area on the card itself. In fact, Jon Titus had published a book back in the old days, that suggested a similar scheme for hardware interfacing. The book is called “Apple II Interfacing”. I talked to Jon about updating and releasing a modified version of this book a few months back, but at this point that project is in limbo.