Source: https://youtu.be/LCPOXZ7zaD0

An implementation of video RAM does not sound exciting, does it? Actually it is a pretty neat challenge on ancient 8-bit hardware due to the fact, that a CPU on the one hand and a kind of video output device on the other hand need to share access to that portion of RAM. That in itself is not too complicated, but implementing it in a way, so the least number of CPU cycles gets lost in the process, is one.

Slu4 implements his own VGA mini interface and connects it to an Arduino. If you followed Ben Eaters VGA project, you will feel at home. Whether or not, does not matter. You will learn a lot in this wonderfully detailed video series.