[Info-vax] Dave Cutler, Prism, DEC, Microsoft, etc.

[Rich Alderson]

Jan-Erik Söderholm   <jan-erik.soderholm at telia.com> writes:

> Rich Alderson wrote:
>> JF Mezei <jfmezei.spamnot at vaxination.ca> writes:

>>> RE: new PDP11s post Digital going to VAX.

>>> Didn't Compuserve use customer PDP11 based machines as "nodes" in
>>> different cities where they offered service ?

>> No, they used PDP-10 systems, eventually making a deal with Systems Concepts
>> to manufacture their own SC-40 CPUs at a license fee per box of 40% of list.

>> And yes, the SC boxes do count as PDP-10 systems.  Bug-compatible with the
>> KL-10 processor.

>>> And after Mentec inherited the PDP, did it have any PDP CPUs fabbed ? Or
>>> did it use stockopiled CPUs made by DEC when it made the last big batch
>>> of them ?

>> There's no such thing as "the PDP"!  DEC built 4.5 different architectures
>> which it labeled PDP-<number>, you know.

> They might have used "real" PDP-11 CPU's for some time, but the last
> models was built using an inhouse emulation of the PDP-11 CPU using
> completely different processors...

Hmm.  Since I was part of the conversation with CIS when they were looking for
a less expensive alternative to the SC40s, and heard the systems programmers
from CIS describe the use of PDP-10 systems as network nodes, I'm pretty sure
I know what I'm talking about here.

There were no PDP-11 systems used in that application.

-- 
Rich Alderson                  "You get what anybody gets. You get a lifetime."
news at alderson.users.panix.com                           --Death, of the Endless