I was super impressed how they got high resolution graphics out of the ZX81 which only has characters not a user programmable bitmapped display https://retroco

I was super impressed how they got high resolution graphics out of the ZX81 which only has characters not a user programmable bitmapped display https://retrocomputing.stackexchange.com/questions/6134/how-do-high-resolution-graphics-work-on-the-zx81 https://retrocomputing.stackexchange.com/questions/6134/how-... https://youtu.be/iW8QoL4NYkU https://youtu.be/iW8QoL4NYkU