CocoJEM is a Color Computer emulator with the goal of making it easy to run and debug on the Color Computer 2 and 3 using the 6309 and 6809 CPU's.

GitHub Project

Progress report 1 | Progress report 2


I'm looking to create a new emulator that is easy to use, easy to maintain, is cross platform, and easy to extend.

Memory Dump

Memory dumps can be shown as traditional bytes or in the selected video mode. That way you can see your program as it builds the off screen buffer up.


I put together a small prototype to test a few concepts. I was able to:

So far I'm happy with the performance and look. Now it's time to start working on the actual emulator.

Copyright © 2019, Lee Patterson