Working board and audio
Bringing up the new board this time was pleasantly straight forward. I did have one mistake on the design where the enable lines for the data bus buffers we...
Recent Posts
Y Ddraig redesign
It has been quite a while since I have posted any updated here. Some of the lack of progress was down to working from home. While I thought that this would g...
SN76489: Success and Failure
Trying to get the SN76489 working has been an interesting exercise and a good example of why it is important to read datasheet with great care. Initially I ...
A small update
It’s been a while since I’ve done any work on this project. I was going to build, or at least part build a second board to see if I could get the V9990 worki...
DRAM and IDE
The last couple of weeks have mostly been spent working on improving the monitor code but there has been some progress on the hardware side as well. Both th...