General Question about UNIBUS backplanes

Paul Anderson useddec at
Sun May 22 18:55:32 CDT 2016

An M930 terminator in the far left slot in A/B, where you have the RL11
(M7762). I don't remember if the G7273 is a unibus or q-bus grant card. I
always use the G727 , I think, the little 2 inch by 2 inch or so.

Try front panel funstions with the RL11 out.  You'll probably have to move
it to slot 3.

There is a trick to using a M9301 or m9312  in an 11/40, but I don't
remember it now.  It's been a while since since I've played with an 11/40.

On Sun, May 22, 2016 at 6:07 PM, william degnan <billdegnan at>

> Paul,
> What terminator card exactly?  As I had written originally, the system was
> functional before I added the core planes.  I was thinking that I needed a
> terminator now that I have more than just the cpu plus four slot plane, but
> I did not have the space for it along with all of the cards I already have
> installed.
> (I removed the grant cards from the core planes per Tony's suggestion.)
> --
> @ BillDeg:
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