24 Jan
2019
24 Jan
'19
8:32 a.m.
On Jan 24, 2019, at 9:55 AM, Paul Koning via cctalk
<cctalk at classiccmp.org> wrote:
No. As far as I know there were only 2 11/74?s in use; the quad machine in Spit
Brook (CASTOR:: and, when split into 2 duals the other was POLLUX::) and a dual in
Tewksbury, later LKG (ELROND::). After the project was cancelled there were a number of
already built 11/74?s which were stripped down to single CPUs and made available
internally for development - that may be what you saw in the RSTS lab.
John.
On Jan 23, 2019, at 5:37 PM, Noel Chiappa via
cctalk <cctalk at classiccmp.org> wrote:
In response to a request a couple of years back from Cindy, I've been slowly
working on a page to help scrappers identify PDP-11's, and give them an idea
what to look for. I have it _mostly_ done:
http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/PDP-11_Models.html
Comments/error-checking etc welcome. Also, I still need images of a few
things: -11/60 and -11/94 front consoles, the original LSI-11 card, the
KDJ11-E, and most of the DEC QBUS boxes. (Yeah, I could try looking for free
images, I've been busy!)
Any help gratefully received!
Noel
Was the 11/74 ever shipped? I know of two machines that were called that, both 11/70
derivatives: the multi-processor machine that RSX-11/M supports, and an 11/70 with CIS
instructions added, seen in the RSTS lab in Merrimack NH in the early 1980s.
paul