https://www.suppermariobroth.com/post/730465347847831552/michaelfoglemancomplotter
The NES system features 2048 bytes of RAM. As an art project, software engineer Michael Fogleman recorded the state of every byte in the NES’s memory that changed during 5 continuous seconds of Super Mario Bros. gameplay and created a graph showing their changes over that time frame, with each line representing one of the memory addresses, and the height of the line representing its value from 0 to 255.
The purpose of the illustration is to show how many calculations are happening in the background of gameplay even on seemingly simplistic devices like the NES. Each time any of the lines changes its height within the graph, a new value was written to the RAM at that point.
For a similar art project showing a printout of every single code operation of two seconds of Super Mario Bros. 3 gameplay, please see this previous post.
Huh?