7 Dec
2016
7 Dec
'16
7:34 p.m.
Date: Tue, 6 Dec 2016 22:57:08 -0700
From: Eric Smith <spacewar at gmail.com>
Subject: Re: Could somebody please help me identify this board?
On Tue, Dec 6, 2016 at 7:32 PM, Jon Elson <jonelson126 at gmail.com> wrote:
The components are on the wrong side of the board for a Multibus.
If I remember correctly, DY 4 Systems, now part of Curtiss-Wright, made
extended depth Multibus boards.
Michael Thompson
It appears to be an extended-length Multibus II
board with 2 8-bit DACs
on
it. Output for an XY scope?
Extended-length Multibus. Definitely not Multibus II, which uses Eurocard
6Ux220 form factor with two 96-pin DIN 41612 connectors.
7 Dec
7 Dec
11:28 p.m.
On Wed, Dec 7, 2016 at 5:34 PM, Michael Thompson <
michael.99.thompson at gmail.com> wrote:
Given that it's extended length anyhow, and thus not compliant with the bus
spec, it doesn't really matter which side of the board the components are
on, other than it precludes use in some backplane slots. I may have been
designed that way to fit in a specific slot in a specific machine.
Extended-length Multibus. Definitely not Multibus II, which uses
Eurocard
6Ux220 form factor with two 96-pin DIN 41612
connectors.
The components are on the wrong side of the board for a Multibus.
11:31 p.m.
On Wed, Dec 7, 2016 at 9:28 PM, Eric Smith <spacewar at gmail.com> wrote:
Given that it's extended length anyhow, and thus
not compliant with the
bus spec, it doesn't really matter which side of the board the components
are on, other than it precludes use in some backplane slots. I may have
been designed that way to fit in a specific slot in a specific machine.
On the other hand, the pin count on the wider edge connector is 100 rather
than 86 so not Multibus.
8 Dec
8 Dec
4:17 p.m.
On 12/07/2016 10:31 PM, Eric Smith wrote:
On Wed, Dec 7, 2016 at 9:28 PM, Eric Smith
<spacewar at gmail.com> wrote:
OK,better eyes solve the puzzle!
Jon
Given that it's extended length anyhow, and
thus not compliant with the
bus spec, it doesn't really matter which side of the board the components
are on, other than it precludes use in some backplane slots. I may have
been designed that way to fit in a specific slot in a specific machine.
On the other hand, the pin count on the wider edge connector is 100 rather
than 86 so not Multibus.
8:24 p.m.
On 9/12/2016 10:17 a.m., Jon Elson wrote:
On 12/07/2016 10:31 PM, Eric Smith wrote:
Hey, just checking - I think the puzzle has already been solved twice. I
mentioned that I was pretty sure it's a Compugraphics board, and someone
else said the same thing a few days later, but neither of those posts
received any replies.
Cheers,
Mike
On Wed, Dec 7, 2016 at 9:28 PM, Eric Smith
<spacewar at gmail.com> wrote:
OK,better eyes solve the puzzle!
Jon
Given that it's extended length anyhow, and
thus not compliant with the
bus spec, it doesn't really matter which side of the board the
components
are on, other than it precludes use in some backplane slots. I may have
been designed that way to fit in a specific slot in a specific machine.
On the other hand, the pin count on the wider edge connector is 100
rather
than 86 so not Multibus.
9 Dec
9 Dec
4:54 a.m.
2748
days inactive
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5 comments
5 participants
participants (5)
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jonelson126＠gmail.com -
michael.99.thompson＠gmail.com -
mike＠fenz.net -
pye＠mactec.com.au -
spacewar＠gmail.com