I've always had an interest in the Lisp and Smalltalk projects at Xerox PARC in the 70s through the 90s.
Recently, there have been great
efforts to revive Medley Interlisp, a pure Lisp OS designed for Cold War Era AI and beyond.
This is a very old dialect of Lisp but it's still interesting to use. (I'm generally a Common Lisp guy).
Anyway, they've got a BITBLT function and that means demoscene stuff IS possible.
I may do more if there is interest, but twisting a DARPA funded AI OS that only runs Lisp is fertile ground for cool hacks.
This is a WIP, I may do more if there is interest.
You can download a personal copy of Medley for Linux, Mac, and Windows currently.
Paolo Amoroso has good
build instructions.
The repository is
here.
See the attached image, hopefully it animates...