http://www.wolczko.com/mushroom/
The slides for my 2019 talk about Smalltalk computers (in LibreOffice and PDF formats):
http://www.merlintec.com/download/2019_slides_jecel_fast1v2....
http://www.merlintec.com/download/2019_slides_jecel_fast1v2....
and the video (1 hour and 13 minutes):
https://www.youtube.com/watch?v=tATpzsyC6OA
If you replace the Rekursiv's special microcode memory with a cache to allow microcode to live in main memory you will essentially have a RISC version of the machine. I have adopted this solution in several of my own designs.
I'm also deeply in love with the merlintec website. It's refreshing to see a website which has persisted since 1999(!), and without a lick of JavaScript it would seem!
Could I purchase a Merlin 6 or a Pegasus 2000?
Speaking of which, the way that the Pegasus 2000's eGUI documentation[1] is written is incredibly dear. The "world" and "heaven" analogies are great!
I'd also love to see your talk! Do you think a RISC Rekursiv could be achieved? What value, if any, do you think such might have in our current world?