Confirmed, even pre PC micro's as you say could achieve this feat. I personally did a demo that I slipped onto the local computer stores machine that sat in hi

Confirmed, even pre PC micro's as you say could achieve this feat. I personally did a demo that I slipped onto the local computer stores machine that sat in high memory (reset resistant unless held down for few seconds more than a press) TSR kinda thing upon an Atari ST that had a selection of the finest artwork that would cycle thru the selection after a delay of a few minutes displaying a screen capture of a normal desktop. Few weeks later version two had an animated flying phallus sprite across the screen. But for a generation that found amusement in 55378008 upon a calculator, then it was inevitable.