There were only 2 11/45s that I knew of. The first was the “front end” that sat in front of all of the terminals and allowed connection to the various 10s (at the time there were 3: 2 KA10s and a KL10), C.MMP and CM*. The other 11/45 ran the XGP...
They had moved on to a Xerox 9700 and DECSYSTEM-20s behind Micom port selectors by the time I first rolled up there in 1984. CS still had a cluster of PERQs in Wean Hall.
Not too long after that, the DECSYSTEM-20s were decom'd, and the old terminal clusters were converted over to IBM PCs, Macs, and IBM RT Andrew workstations.
--FritzM.
