For those of you in the Valley, you can find the book that started me on this project at the Santa Clara library. It's the first edition of "Microprocessor System Design Fundamentals" by Kenneth J. Breeding.
It's not a great book, but it's one of very few publications (apart from the databooks) that explain the 6809 architecture.
It's not a great book, but it's one of very few publications (apart from the databooks) that explain the 6809 architecture.