Talk:C.mmp
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editThe accuracy of the description,"Most of the 11/20 modifications were custom changes to the motherboard," of the pdp11/20 is suspect. The pdp11/20 didn't have a motherboard; It had a backplane into which the various logic modules were inserted. Milov (talk) 14:42, 8 October 2011 (UTC)
I just visited this talk page to make the exact same observation that User:Milov did. Since there have been no responses, I'll go ahead and make the change. --Burt Harris (talk) 16:02, 31 July 2020 (UTC)
The gentleman who did a lot of C.mmp's hardware design was Roy Levin; that's how I remember him from my involvement with the project, and you have his name spelled correctly in the last References entry. The link to Roy Levien seems incorrect, given that that article mentions no time spent at CMU.
... looking at the history, I see the text previously correctly mentioned Levin, and it was changed on 10 Apr 2020 with no evidence provided that the change was correct. It isn't, so I went ahead and reverted it.
...on display at CMU...
editHa ha! Funny. The windowless ninth floor of [Wean Hall]† is all elevator machinery and HVAC machinery and padlocked storage lockers. It is not supposed to be accessed by anybody but maintenance personnel or, people who are escorted by maintenance personnel. The storage lockers are mostly full of old capital equipment for which the accounting department has not yet given permission for it to be hauled out to the dumpsters.
† Wean Hall is built into a hillside. The front entrance, shown in the photo, underneath the overhanging lecture hall, is on the fifth floor. The entrance on the back side of the building is four stories below.