[Info-vax] Nomenclature [was Re: VAX 6000 on Young Sheldon]

[Rich Alderson]

Tony Priborsky <twobjshelbys at gmail.com> writes:

> on both VMS (32bit) and PDP-20 (36 bit) machines.

Point of order:  There was never a family called the "PDP-20".

All of the post 1964 36-bit architecture machines (derived from 1964's PDP-6)
are classed as PDP-10s, whether labeled "PDP-10", "decsystem-10", or "DECSYSTEM-20".

In fact, the follow-on (codenamed "Jupiter"), which was supposed to use the
HSC-50 exclusively, was going to be called the "DECSYSTEM-40", based on the
marketing materials I have seen.  (I have binders with silkscreened labels
reading "DECSYSTEM-4050".)

Even clones, like the Xerox PARC MAXC, the Foonly F-series, the Systems
Concepts SC-30M/SC-25/SC-40, and the XKL Toad-1 and Toad-2, are referred to as
"PDP-10 systems".

-- 
Rich Alderson					  news at alderson.users.panix.com
      Audendum est, et veritas investiganda; quam etiamsi non assequamur,
	  omnino tamen proprius, quam nunc sumus, ad eam perveniemus.
									--Galen