back when I read Masters of Doom over a decade ago, i was fascinated by the brief mention of carmack's "Adaptive Tile Refresh" technique used for Commander Keen, that allowed smooth scrolling on EGA cards

i never found a very satisfying technical (or conceptual) description of how it worked, and I just found out that @fabinou wrote up a fantastic post which did exactly that

https://fabiensanglard.net/ega/

#retroComputing #retroCoding #retroGaming #apogee