On 11 May 2016 at 21:53 Dave Wade <dave.g4ugm at gmail.com> wrote:
I thought I had attached a pic of the card layouts, I assume these are
deleted... Here is a link... Sorry it's long.
https://onedrive.live.com/redir?resid=277A0739F125010E!88626&authkey=!A…
Cards are
M7264,
M7940,M9400ye
M8044ee,m7946
M8192,empty.
Also have loose grant card....
I collected this machine on Dave's behalf. The seller said it was indeed out of
a 780. I got the impression the 11/23 card was just a spare he had that he put
in the enclosure, not really part of the original system.
Regards
Rob
On 11 May 2016 20:46, "Paul Koning" <paulkoning at comcast.net>
wrote:
> On May 11, 2016, at 3:30 PM, Noel Chiappa <jnc at mercury.lcs.mit.edu>
wrote:
>
>> From: Dave Wade
>
>> I have recently a PDP-11 which apparently came from a VAX console.
>
> If that's really where it came from, it's a QBUS 11/03. (And IIRC only
the
780 had a
PDP-11 console, although I'm not a VAX expert.)
Some others had a PRO as their console. Don't remember which models
specifically.
> ...
>> I have done lots of searching and there doesn't seem to be a simple
>> list of what can run on it
>
> Well, nothing that needs memory management - at least, as it sits. You
could
> swap out the CPU card for an 11/23 or 11/73,
then you could run an OS
that
> needs memory management (Unix, or one of the
DEC OS's that needs it -
> I
know
> nothing of the DEC OS's for the -11,
someone else here will, though).
And
> your backplane is probably so-called Q18,
limited to 256KB of memory,
but
that's easy to upgrade.
The 11/03 should run RT-11 nicely. Limited RSX, possibly; I don't know
those details. RSTS V4 also runs on unmapped PDP-11 systems, but that OS
only supports Unibus machines and a very limited set of disk controllers
(which doesn't include floppies).
paul