23 Mar
2017
23 Mar
'17
1:19 p.m.
This:
http://www.ebay.com/itm/252820125010
looks like it might be an -11/70 backplane, but I'm too lazy to look up the
part number.
Noel
23 Mar
23 Mar
1:27 p.m.
On Thu, Mar 23, 2017 at 04:19:01PM -0400, Noel Chiappa via cctalk wrote:
This:
http://www.ebay.com/itm/252820125010
looks like it might be an -11/70 backplane, but I'm too lazy to look up the
part number.
Noel
The 11/70 backplane is wirewrapped. If that is an 11/70 backplane.. it
requires some work :)
/P
2:07 p.m.
Van: Pontus Pihlgren via cctalk<mailto:cctalk at classiccmp.org>
Verzonden: donderdag 23 maart 2017 21:27
Aan: Noel Chiappa<mailto:jnc at mercury.lcs.mit.edu>; General Discussion: On-Topic
and Off-Topic Posts<mailto:cctalk at classiccmp.org>
Onderwerp: Re: eBay: PDP-11/70 backplane?
On Thu, Mar 23, 2017 at 04:19:01PM -0400, Noel Chiappa via cctalk wrote:
This:
http://www.ebay.com/itm/252820125010
looks like it might be an -11/70 backplane, but I'm too lazy to look up the
part number.
Noel
The 11/70 backplane is wirewrapped. If that is an 11/70 backplane.. it
requires some work :)
/P
AFAIK, the 11/70 backplane is about that size, but it consists of *two*
separate backplanes with lots of fragile wiring between the 2 halves.
Further, I am ?missing? a few MOLEX connectors on the top side.
My guess, this is NOT an 11/70 backplane ? but what it is ??
2:15 p.m.
On Mar 23, 2017, at 2:07 PM, Henk Gooijen via cctalk
<cctalk at classiccmp.org> wrote:
AFAIK, the 11/70 backplane is about that size, but it consists of *two*
separate backplanes with lots of fragile wiring between the 2 halves.
Further, I am ?missing? a few MOLEX connectors on the top side.
My guess, this is NOT an 11/70 backplane ? but what it is ??
11/70 memory box backplane? Seems about the right size and the
molex connectors on the edge seem to be in the right places. I?m
however, not sure about the mounting brackets on each end.
TTFN - Guy
2:36 p.m.
On Thu, Mar 23, 2017 at 5:15 PM, Guy Sotomayor Jr via cctalk
<cctalk at classiccmp.org> wrote:
11/70 memory box backplane? Seems about the right
size and the
molex connectors on the edge seem to be in the right places. I?m
however, not sure about the mounting brackets on each end.
ISTR the MOS memory box should have room for 16X M8728 256KB memory
boards (4MB) and 2? non memory boards (I haven't looked in mine in a
long time). 4MB of memory total, but I'm forgetting if it's 2MB per
box or 2MB per backplane in the same box or 4MB on one backplane...
-ethan
1:28 p.m.
It is the MK11 MOS Memory box backplane, not the cpu backplane which
is bigger (and has lots of twisted pair wiring).
Ed
--
Ik email, dus ik besta.
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On Thu, March 23, 2017 21:19, Noel Chiappa via cctalk wrote:
This:
http://www.ebay.com/itm/252820125010
looks like it might be an -11/70 backplane, but I'm too lazy to look up
the
part number.
Noel
2830
days inactive
2830
days old
5 comments
6 participants
participants (6)
-
ed＠groenenberg.net -
ethan.dicks＠gmail.com -
ggs＠shiresoft.com -
henk.gooijen＠hotmail.com -
jnc＠mercury.lcs.mit.edu -
pontus＠Update.UU.SE