robert.jarratt at ntlworld.com
Wed May 11 16:20:35 CDT 2016
> 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.
> Cards are
> 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.
> 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>
> > >
> > >> 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
> > > 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
> > > ...
> > >> 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
> > > swap out the CPU card for an 11/23 or 11/73, then you could run an OS
> > > needs memory management (Unix, or one of the DEC OS's that needs it -
> > > I
> > > nothing of the DEC OS's for the -11, someone else here will, though).
> > > your backplane is probably so-called Q18, limited to 256KB of memory,
> > > 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
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