PDP-11/05-NC with M9301?

william degnan billdegnan at gmail.com
Thu Mar 17 15:25:23 CDT 2016

On Thu, Mar 17, 2016 at 4:02 PM, Mattis Lind <mattislind at gmail.com> wrote:

> >
> >
> >
> > I took a look at my 11/40, it has a 9312 in pos 1/2 in the middle of the
> > 2nd/rear of two backplanes here:
> > http://vintagecomputer.net/digital/PDP11-40/NPG.JPG
> >
> > With this arrangement I can boot into the console monitor installed on
> the
> > 9312.
> > http://vintagecomputer.net/digital/PDP11-40/Console_test.JPG
> This means that you not have the terminator in the last slot of the bus,
> right? Since your bus is so short it won't probably matter.
Dave McGuire and I went over the system and concluded the same, basically
it's either put it there or I can't have an RL02 drive controller because
the NC Grant.  Dave pulled the NC Grant wire from the backplane (where the
NC Grant card is now).

Anyway, I think the RAM card I have installed in this machine is
conflicting somehow with the RL02 attempt to initialize, this is TBD, but I
can't quite boot the machine.

@ BillDeg:
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