Welcome to my 6809 Playground! This project is about building a general purpose 8-bit computer based on the Motorola 6809 CPU. While this is definitely a retro-computer project, I'm not going to be dogmatic about it -- modern gadgets that add value to the project will have a home here, too.
The whole point of this exercise is to learn-by-doing and have fun in the process. I have a few ideas about how I want the project to go, but it may veer this way or that as it progresses. We'll see!
I invite you to follow along with this YouTube playlist. As each installment is posted, this README will be updated with additional information about the that installment, including links to data sheets and a parts list.
If you learn something from this, if you decide to build one of these yourself, or if it inspires you embark on a similar adventure on your own, I would love to hear from you!
In the first installment, I briefly introduce the project and provide some background.
Video link: 01 - Introduction
In the second installment, I describe the design and implementation of the clock generator circuitry.
Major components:
- 74ACT163 binary counter
- 74ACT109 dual J-/K flip-flop
- Lattice GAL22V10 or Atmel ATF22V10 electrically-eraseable programmable logic device
Video link: 02 - Clock Generator
This the third installment, I describe how the reset generator works.
Major components:
Video link: 03 - Reset Generator