Ah those were the days, my friend.

[Matt Agajanian]

You're welcome, Bob. Actually, Katie Wasserman (I think that's her name), has a whole calc and literature library. So, thanks to Katie first.

Yes, when I originally read the book (and even today), I still find naming the top-of-stack register W quite peculiar.

Clarification though--Mostek was the chipset, not a function set. Also, if you are fortunate to own the Privileg SR54-NC, this too has the same exact chipset and function roster as the calcs named on the book's cover.