Help identifying mystery Unibus board

[Tony Duell]

On Tue, Sep 24, 2019 at 9:13 AM Bill Degnan via cctalk
<cctalk at classiccmp.org> wrote:
>
> > >
> > >
> > > Here's the full board, for reference:
> > >
> > > http://yahozna.dyndns.org/scratch/random/board1.jpeg
> > >
> > > Thanks,
> > > Josh
> > >
> >
> > /Mattis
> >
>
> You confirmed it is not Omnibus bd, like a drive bootstrap board?

I think with that many address switches, a 'vector' switch, the grant
jumpers and the connector at that end it's Unibus.

-tony