I wonder if the train animation is a direct descendant of this program which was published by Processor Technology in their Access newsletter, Volume 1, No. 4.

I wonder if the train animation is a direct descendant of this program which was published by Processor Technology in their Access newsletter, Volume 1, No. 4. The author is "Newett Awl", which supposedly was the pseudonym of Gordon French, co-founder of the Homebrew Computer Club. PT was the maker of the Sol-20, a 1976-ish CP/M machine. demo: https://www.youtube.com/watch?v=UjiYQqTWHbo https://www.youtube.com/watch?v=UjiYQqTWHbo Source code: http://sol20.org/programs/train.asm http://sol20.org/programs/train.asm