PDP-11

[Jarratt RMA]

> 
>     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=!AEjo1kJ4FKG5jZk&v=3&ithint=photo%2cJPG
> 
>     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
>     >
>     >
>