Apologies for the cursing, but that is the most bat shit insane demo I have ever seen. I'll just leave you with the top comment on the video: "Witches have been burnt for lesser sorcery"
In this case I'd say the batshit part is that the floppy drive has almost the same CPU as the C64 it starts attached to. 1MHz tied to raw I/O pins is powerful, no matter what it's inside.