2016-02-25 14:55 GMT+01:00 Noel Chiappa <j...@mercury.lcs.mit.edu>: > > From: Paul Koning > > > FWIW, I have always heard 11/05 and 11/40 respectively. > > Good to know that others have the same vibe that I do. > > > > From: Bill Degnan > > > putting all of that original 11/10 stuff aside :-) > > :-) > > > There is a version of the processor handbook with all 4, and there > is a > > version with just 11/40. I have never seen a processor handbook for > > just the 11/35, 11/05, or 11/10 by itself. > > Good point. > > BTW, there's often some confusion; some people think the 11/05-10 was the > second PDP-11. It wasn't, it's the fourth, and those processor handbooks > confirm that. The first 11/45 one is dated 1971, the 11/40 one is 1972, > and the one with the four is 1973. > > > I always treated the 11/05 and 11/10 as separate machines, just as > much > > as the 11/05 S and 11/05 NC. > > Can you please remind me again what the differences with the 11/05NC are? I > remembered we discussed it, but I'm too lazy to dig through the list > archives > for it. >
The NC is in the BA11-D 10 1/2 inch box. It uses the H750 PSU. > > As far as I know, the original 11/05 and original 11/10 differ only in i) > the number on the front, and ii) what options were standard/offered in > each; > the hardware is entirely identical. > > > Not sure if there is an 11/10 model S or NC. > > There is definitely an 11/10S (again, identical internally, AFAIK, to > the 05S - the DEC manual for the 05S-10S says exactly that). > > > > From: Paul Anderson > > > The 11/05 and 11/10 .. use about 6 different backplanes, most of then > > listed in the Unibus Troubleshooting Guide. > > I know of 3, will have to look there to see what else it says. > > > A lot of people have gotten into trouble thinking all the backplanes > > were the same. > > Yes! I know of two for the 11/05-10: one holds one MM11-L, with four SPC > slots; one holds two MM11-L's, with only a single SPC slot. The 11/05S-10S > have a different backplane which holds a single MM11-U, and has 3 SPC > slots. > NC can have two MM11-L. No SPC slots. I have three machines with three different backplanes. One 11/05-NC, one 11/10 in 5.25 inch box and one 11/05-S in BA11-K. > > Needless to say, trying to plug an SPC board into a memory slot, etc will > lead to tears (and probably smoke, too... :-) > > Noel >
