Best name for PDP-11/05-10

[Mattis Lind]

2016-02-25 14:55 GMT+01:00 Noel Chiappa <jnc at 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
>