A while back I did some experiments with 4-bit digital to analog RGB. I wanted to find a simple arrangement of resistors that took for digital lines and produc

A while back I did some experiments with 4-bit digital to analog RGB. I wanted to find a simple arrangement of resistors that took for digital lines and produced Red,Green and Blue intensity levels to produce a palette that was more friendly. Blog entry on it here. http://blag.fingswotidun.com/2020/07/a-nicer-4-bit-colour-withhout-fancy.html http://blag.fingswotidun.com/2020/07/a-nicer-4-bit-colour-wi... More recently I had the thought of training a resister-net in pytorch with quantization aware training (quantizing resister values to a few common values) to see if I could produce a set of colours to minimise the average perceptual distance to the closest palette entry from any color. One day I'd like to make my own 74-logic game console, so this was one of the building blocks. It did make me think that having a cartridge port that as well as ROM, included Analog-in, Analog-out, and digital-in video lines so carts could tweak the colours. To use system default just connect analog-in to analog-out for each of R,G, and B. Cross the wires to get palette variations. Use the digital lines to resister-net your own (or just modulate the default). Or go crazy like a NES mapper.