[Simh] Older Model VAX simulators, what can you do with them and how do they work?

[Clem Cole]

Ultrix would be different than BSD.  Ultrix was done by DEC in Merrimack
(Original in TIG - Telephone Industry Group).  Originally all UNIX
"support" was a special for a customer - AT&T.     When DEC finally decided
to compete in the UNIX biz, Ultrix became a first class OS and a product.
The key is that Ultrix would have supported all the Vaxen, and all PDP-11s
with an MMU - because by then that was what it was supposed to be.   It
also had the DEC languages suite (Fortran, Pascal, Cobol, etc as well the
DEC linker from VMS).

3BSD, 4BSD and 4.4BSD all came out of UCB's CSRG before TIG morphed into
the Ultrix team.  Remember Ultrix was based on a lot of BSD technology -
and they are close - but were not the same.

On Mon, Oct 10, 2016 at 12:03 PM, Ethan Dicks <ethan.dicks at gmail.com> wrote:

> On Sun, Oct 9, 2016 at 10:13 PM, Henry Bent <henry.r.bent at gmail.com>
> wrote:
> > 4.2BSD kernel conf has settings for the 780, 750, and 730, and the
> generic
> > kernel ought to boot on any of those.  4.1C BSD has the same kernel conf
> > settings as 4.2 (no surprise there).  Vanilla 4.1 looks like it will only
> > support the 780, so anything earlier will definitely only run on a 780.
>
> We ran 4.0BSD and 4.1BSD on our 11/750 in 1985.  I do not know what
> gyrations were required as I didn't install it, I only used it.
>
> > The Ultrix 1.0 manuals specifically mention the 780, 750, and 730, which
> is
> > no surprise because it's basically 4.2BSD with some add-ons.
>
> I _did_ install Ultrix on our 11/730, my first-ever UNIX install.  It
> took a long while, but it ran with no fiddling.
>
> -ethan
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