Recent Posts

FPGA Video card CPU access

In my previous post, I had the VGA output working and was able to display several test patterns. I briefly mentioned that I could read data from the SRAM on ...

FPGA Video card testing

The FPGA video card has been built up. A couple of mistakes in ordering the parts so I ended up with a couple of capacitors that have the wrong footprint but...

FPGA Video card

Now that I have two expansion boards working successfully with Y Ddraig, a sound board based on the Yamaha YM2151 and a video board based on the Yamaha V9958...

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...

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...