This is an interesting discussion. I may have to dig thru my
boxes and see if I still have the box this backplane came in.
Lots of time to do it.
But, on another note, I was planning on sending it to
someone when the thought occurred to me last night. I
can't. I don't even know if the
We had a few third party backplanes arranged like this. This allowed
them to put a small MFM hard drive or 8 inch floppy in empty area next
to the 4x2 (2x4?) slots of rack-mount 3U or 4U sized unit. I don't
recall any that were a mix of A-B, C-D. Ours were A-B, A-B.
Jerry
On 4/17/20
On 4/17/20 9:40 PM, Paul Anderson wrote:
I remember the VT72 had a non-standard backplane in it, but I don't
remember the details.
This came out of a real PDP-11. I probably still have the box but
with a bigger backplane. It was easily swapped.
bill
The actual sockets were always labelled with Digital's trademarks, but
they sold them to OEMs to do what they like with them. We OEM'd for the
Components Group, at one time placed a million dollar order of stuff
including boxes of those backplane sockets!
cheers,
Nigel
On 17/04/2020
On 4/17/20 8:36 PM, Chris Zach via cctalk wrote:
Hm. Plessy backplane?
No name on the phenolic board part but the QBUS sockets are labeled
"Digital Equipment Corporation".
bill
On Fri, Apr 17, 2020 at 1:37 PM Bill Gunshannon via cctalk
wrote:
>
> Definitely not that. Very small. Just big enough for the
> slots I mentioned above. Power strip on one edge and berg
> pins for control on the other.
>
I thought you meant 4 rows of Q/CD slots plus 8 rows of Q/Q slots.
So
On 4/17/20 4:05 PM, Glen Slick via cctalk wrote:
On Fri, Apr 17, 2020 at 9:52 AM Bill Gunshannon via cctalk
wrote:
I have been sorting thru a bunch of stuff in an effort to
clean the place up (Aren't we all doing that now with all
this time on our hands?) I found a backplane. It says
On 17/04/2020 17:52, Bill Gunshannon via cctalk wrote:
I found a backplane. It says
Digital on it but does not have an H- number. I also
don;t find it listed in any of the lists I can find on
the web.
It has 8 A-B slots and 4 C-D slots. the Four C-D are on
the bottom half of the
On Fri, Apr 17, 2020 at 9:52 AM Bill Gunshannon via cctalk
wrote:
>
> I have been sorting thru a bunch of stuff in an effort to
> clean the place up (Aren't we all doing that now with all
> this time on our hands?) I found a backplane. It says
> Digital on it but does not have an H- number. I
Smart!
--
Anders Nelson
www.erogear.com
On Fri, Apr 17, 2020 at 1:04 PM Bill Gunshannon via cctalk <
cctalk@classiccmp.org> wrote:
> On 4/17/20 12:57 PM, Anders Nelson via cctalk wrote:
> > Just curious - in all the backplane photos I've seen, it appears the
> > fragile wire wrapping is always
On 4/17/20 12:57 PM, Anders Nelson via cctalk wrote:
Just curious - in all the backplane photos I've seen, it appears the
fragile wire wrapping is always exposed without a cover protecting it from
other components, fallen screws and wayward fingers in the computer cabinet.
Was it ever standard
Just curious - in all the backplane photos I've seen, it appears the
fragile wire wrapping is always exposed without a cover protecting it from
other components, fallen screws and wayward fingers in the computer cabinet.
Was it ever standard practice to put a cover over these? I couldn't imagine
I have been sorting thru a bunch of stuff in an effort to
clean the place up (Aren't we all doing that now with all
this time on our hands?) I found a backplane. It says
Digital on it but does not have an H- number. I also
don;t find it listed in any of the lists I can find on
the web.
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