[Simh] Lost PDP-11 OSes?

Ray Jewhurst raywjewhurst at gmail.com
Thu May 21 15:47:32 EDT 2020


CAPS-11 is available on Simh website and you are right, it's nothing too
exciting. BASIC-CAPS-11 is available as well.

On Thu, May 21, 2020, 2:53 PM Paul Koning <paulkoning at comcast.net> wrote:

>
>
> > On May 20, 2020, at 11:38 PM, Ray Jewhurst <raywjewhurst at gmail.com>
> wrote:
> >
> > I am trying to collect all the OSes that I can for the PDP-11 on Simh
> and I have noticed that there are a few missing.
>
> Along those lines: is there MUMPS-11 anywhere?  That's nicely obscure.
> Another obscure one is CAPS-11, though that's probably far less interesting.
>
> MUMPS was a database system, apparently a very good one.  It was used as
> the core for ASSIST-11, a telephone directory assistance database.  In
> other words, the database that 411 operators would consult to answer your
> request for a phone number in a second or two.  Database lookup in a
> million-record or so database, in around a second, on a PDP-11 in 1978.
> Nice.
>
>         paul
>
>
>
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