Palette - VGA from Scratch - Part 11

In this video I design and build the circuit to add a Palette to my VGA circuit, together with the DAC’s from the last video forming what in modern terminology would be called a RAMDAC.

This video ended up being much longer than I like main channel videos to be. I can’t really cut a video a video like this down the middle as I like to bring chunk of work to a conclusion. I will try to break work chunks down a bit more in future to avoid big ones like this. It was several videos worth of work at all stages.

There is no Schematic inset for this video, I did record it but I couldn’t get it to fit onto the screen without obscuring important work or scaling it to the point of uselessness. I may release a rough cut on the extras channel or add it to the pcb design when I get to it.

0:00 Introduction 0:35 Demo of Current DAC’s 1:39 Design discussion 6:25 Exploring current setup 8:42 Build – Layout and Initial wiring 13:52 Build – Data Lines 18:04 Build – Address Lines 24:48 Build – Control Logic 33:35 Integrate 35:56 Test & Troubleshooting 40:42 Palette Parrot Demo 42:15 Palette cycle Mandlebrot Demo 43:15 Beam raced Palette change Demo 44:35 Normal Map Demo 46:31 Vortex Demo 47:15 Outro

The normal map demonstraited in this video is derived from Julian Herzog’s example on wikimedia https://commons.wikimedia.org/wiki/File:Normal_map_example_-_Map.png ... https://www.youtube.com/watch?v=BvNjRNhznJs