Welcome, Professor Hyde! I have admired your work for many years, and look forward to the possibility of seeing you become a regular poster here.
Well, I'm going to (at the very least) write an interpreter and simple assembler for this thing. So I'll be around a bit to provide updates on that ...

TLDR;

Attached is an Excel spreadsheet with the instruction set description and encoding.
A little more compact for those who don't want to go through the whole web page I put up. Also, this one has lots of updates (haven't adjusted the web page yet--working on it).

Cheers,
Randy Hyde

I was very active in the 65xx world up until the Apple // GS finally died off. Made a couple pilgrimages to WDC. Talked to Bill Mensch quite a bit about what should happen after the 65c816. About the time the 65c832 faded off into oblivion, I finally gave up and switch to Intel PCs and Macs. Even ...