PDP-11/34 & DG Nova-3

From: David Williams <dlw_at_neosoft.com>
Date: Tue Feb 17 08:05:02 1998

On 17 Feb 98 at 1:49, Tony Duell wrote:

> No, there should be a top cover on the RK05. You can run the drive
> without it (e.g. for servicing), but it's best to keep as much dust
> off the heads as possible.

I've had time for a closer look at this. The insides are pretty
dusty. I think it has been sitting around without a cover for some
time. One part looks like it had a filter over it but it decayed and
only left a bit around the edge.

> Those 4 boards are the controller for the RK05. They fit into a
> special 4-slot backplane, as does the white ribbon cable from the
> RK05. What's in the slot _behind_ the M7257? There should be a
> terminator (either an M9302 or an M930) there.

I don't see anything behind the M7257. Didn't see anything with a
M9302 or M930 label. Please don't tell me I'm going to have to find
one somewhere. :-(

> > M9202
> Unibus connector to link the backplanes

One of these wasn't an M9202 but an M920. What's the difference?

David Williams - Computer Packrat
Received on Tue Feb 17 1998 - 08:05:02 GMT

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