I had that book too, I just recognized it when I looked it up. I don't remember it as well, but apparently it was the display circuitry only.

I still have it on my bookcase, and I was not remembering correctly, it has only TTL type logic devices! So now I need to figure out which was the 6502 book.

Found it: https://www.tinaja.com/ebooks/socv1.pdf

"Son of Cheap Video" :-)

Thanks! I noticed "PAiA" electronics sold kits of these--I remember that name from back then. Did they sell parts or other kits? Looks like they are still in business.

Also noticed "Scungy Video" :) (Do NOT search for this term in your favorite search engine.)