PDP-11 Memory

[Paul Anderson]

Hi Bill,

I have a bunch of both DEC and compatible memories, and extra CPUs. If you
need anything, contact me off list.

Thanks, Paul

On Wed, Jan 9, 2019 at 12:49 PM Bill Gunshannon via cctalk <
cctalk at classiccmp.org> wrote:

>
> Well, I have decided to stop playing with my hardware for a while and
> get  back to playing with software.  :-)
>
> In order to do this I am building three (maybe four)
> PDP-11's.  I have an 11/93, an 11/73 and an 11/23+
> (and maybe another 11/23 or 11/73).  BUt, I have run
> into a small problem.  Memory. (both the systems and
> me!)
>
> My 11/93 has 2 meg internal and I would like to bring
> it up to 4 meg.  The others I would like to see with
> 4 meg if possible. (except the last one which I may
> deliberately keep at 128KW.)
>
> I have a number of different memory modules.  Mostly
> DEC but a couple third party.  Here's the problem.
> None of them are reflected in any of the documentation
> I have been able to find so I can't configure them away
> from their defaults!
>
> Here's a list of numbers:
>
> M7551-AC  - All the docs I can find seem to refer to
>              AA or AB and jumpers and switches are not
>              in the same locations.
>
> M8067-LB
> M8067-LF
> M8067-LJ  - Same problem.  I can find no documentation
>              for any -L boards and these don't even resemble
>              the pictures I find.
>
> And then I have two non-DEC module that are unlikely to
> have any documentation still floating around for.
>
> Camintonn  CMV-1000  --  As funny as it sounds, this one
>                           looks  more like a DEC MSV11-QA
>                           then the DEC ones do, but not exactly.
>
> And one who's maker is only identified by a logo that
> looks like 2 interlaced stylized S's.  Model Number
> is: 980110014-201 Rev E.
>
> Anybody got any pointers to help me configure some of this stuff?
>
> bill
>