need a map through the MSV11 Qbus memory jungle

From: Antonio Carlini <Antonio.Carlini_at_riverstonenet.com>
Date: Wed May 22 04:07:39 2002

>in my VAX 11/780 I have the PDP-11/03 alias KC780. And it has
>the following memory board right now:
>
>M7944 MSV11-B Q 4-Kword 16-bit MOS RAM (external refresh)
>
>But, since I'm planning to upgrade to an 11/785 I need additional
>RAM. When it showed up on ePay I buyed a
>
>M8044-DA MSV11-DD Q 32-Kword 16-bit MOS RAM
>
>but the boot program will not load with this. Why would that be?
> From the error I got it appeared as if may be there is just some
>jumpering to do, but I have no clue as to where and what.

There's some 780 console information at DFWCUG
too, but I doubt that it covers this (it's at home
and not to hand right now so I cannot check).

I do have an 11/03 user guide (with a fair bit of
technical info - it's a -TM- part number) and I
can ftp that to you if it might help. I can look in
it tonight to see if it has any helpful comments.
I can also ftp it to you if you don't fancy waiting
a month or so for it to appear on DFWCUG.

Antonio
Received on Wed May 22 2002 - 04:07:39 BST

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