6809 Microcomputer programming&Interfacing with experiments

6809 Microcomputer programming&Interfacing with experiments - By Andrew C.Staugaard

There are quite a few sites that have collected information about the 6809. There are quite a few 6809 emulators so you don't need to find a real processor.

You can buy an old Tandy Color Computer or a Dragon 32/65 that have a 6809 in them. I've found a few here on eBay.

I've only just learned that there was another processor, made by Hitachi, who licenced the 6809 architecture. And there's even a PDF version of the manual for it.

And finally you can still buy 6809 processors, so you could try building something yourself.

This book is a great learning resource for the 6809 architecture and connecting microprocessors and microcomputers to hardware. 

The book starts with an explanation of the hardware of the 6809 and how it physically connects to memory and other parts of computers.

Then the software architecture of the processor is explained. This is good background because most introductions to microcomputers will use a programming language like C. 

Now the practical section starts. The inputs and outputs of the 6809 are explained and the ways that data can be interpreted. From there you can read how various devices and computer peripherals can be connected and controlled by the 6809.

This is now quite an old book (1981), and computers were mysterious to most people. This book takes a single microcomputer and goes through all the fundamental details about making an embedded device or even a full computer with the 6809.

The book is starting to show its age and the glue has deteriorated in the binding. The spine has cracked in a couple of places, and someone has tried to repair a loose page (53,54) with tape. It's all there though.