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

[Jan-Erik Söderholm]

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...