[Simh] Is it possible to simulate the first Vaxen I ever used?

[Bob Eager]

On Mon, 23 Mar 2020 08:10:17 -0700
"Robert Armstrong" <bob at jfcl.com> wrote:

> >FUBAR is the name of a 780 CSR (in the UBA: failed unibus address
> >register);
> > perhaps it was used in the 730 as well.  
> 
>   The 730 certainly had a UBA; don?t know if had a specific "FUBAR"
> register though.  But as far as a physical bar inside the chassis
> I've never seen nor heard of anything like that.  I have a 730 in the
> garage and it doesn't have any such thing.  The 730 fit into a single
> 10-1/2" chassis anyway, so there wasn't even a specific cabinet or
> rack dedicated to the 730.  And the 730 chassis was basically the
> same box as was used for the 11/44, but with a somewhat different
> backplane.
> 
>   I suspect the "FUBAR" at Dan's high school may have been a local
> joke :)

Not at all. It existed on the 780, at the very least, so most likely
elsewhere. Mentioned in the VAX11/780 Hardware Handbook (e.g. the
1979-80 edition).

See:    http://www.tavi.co.uk/FUBAR.jpg