@neauoire ok, but Bits of History is pre-Squeak. ST80 wasn't particularly trying to be portable, whereas Squeak very much was (and successfully so). Certainly it's a much larger VM spec than uxn, but it's portable and long-lived, and you feel very close to the (VM's) metal when you work on it.
@avibryant the Squeak VM is a cathedral, but like I said, they are not misaligned with what I'm trying to do with Uxn.
Actually Uxn is inspired by Alan Kay's paper Cuniform Tablets Of Computing. Have you ever had a chance of watching Weathering Software Winter?
https://www.youtube.com/watch?v=9TJuOwy4aGA
I go over the connection between the Cuneiform and Uxn.