> On Jan 24, 2019, at 9:55 AM, Paul Koning via cctalk <cctalk@classiccmp.org> > wrote: > > > >> On Jan 23, 2019, at 5:37 PM, Noel Chiappa via cctalk <cctalk@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 > 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.
