11 Feb
2015
11 Feb
'15
11:55 a.m.
On Sat, Feb 7, 2015 at 7:25 AM, Paul Birkel <pbirkel at gmail.com> wrote:
I don't understand the role of the M8162
"Port MUX A module" and M8163
"Port MUX B module" that the field-guide claims to be part of the MK11.
They aren't part of the MK11 as far as any documentation that I've read
regarding it. [...]
Do these modules really belong to the MKA11, rather than the MK11?
The MKA11 was the multiported version of the MK11, intended for
multiprocessor (11/72 and 11/74) systems. it makes sense that it would
have some "port mux" modules, though I've never seen any documentation
on it.
Reportedly some 11/70 systems were sold to AT&T with the KB11-CM CPU
and MKA11, apparently just as a way to use up the hardware that was
built for the cancelled 11/74.