C256 Foenix October Update

C265 Desktop

Stefany has posted her latest update on the C256 Foenix Project.

Through Hell or High Water

In October, the project has been testing my determination. I have to admit that I never thought I would spend so much time in the bring up phase of that first board. My expectations were that by mid-October I would be already developing the 2D Graphics engine. As of today, I am nowhere close to that point. Actually, I have been struggling with a very subtle and nasty problem that I believe I found the source of. My hubris got the best of me during the design phase of the project. I completely overestimated the importance of applying the same rules for very fast clock circuit to the more modest one like 14Mhz. At the end of the day, noise is a problem that exists at every clock speed and it needs to be dealt with the same way, either it is a 200Mhz or a 14Mhz clock system. Lesson learned.

Time for Revision B

Now that I have pinpointed the specifics of my different problems/bugs that I found along the way and also after a very enlightening conversation with a friend of mine during Portland Retro gaming. I have decided to begin the process of creating a revision B that will encompass the different changes needed to fix my problems but also to go through a BOM cost reduction exercise. Which will leads me inexorably to reconsider many of my early choices hence to remove a lot of unnecessary parts and/or possible features that some of you might have wanted. I will give the details of the new set of features in the next update.

The person she’s referring to is David Murray aka The 8-Bit Guy. They have been talking about colaborating or him possibly using a scaled down version of the C256 Foenix board. I’m sure there will be more to come on that soon.

Stefany and and David Murry aka The 8-Bit Guy at the Portland Retro Gaming Expo 2018