I posted some graphics routines I wrote back in the '90s for a '286 based computer.
The routines were very fast for the time, up to 10x faster than most common libraries, making use of self-modifying code.
https://github.com/robfinch/Cores/tree/master/software/graphics

Thanks for sharing, Rob!
(Would be nice if you could also check in a PDF version of that DOC file.)

Okay, I added a .PDF file and more recent .docx format file.

I have to confess that I did not originate much of the routines other than making self modifying code, and translating pseudo-code into assembler routines. Most of the stuff is well known algorithms and on the web today. I used to be part of a book club and gleaned some good info from a couple of Lindley's graphics books.

Thanks!