9 Oct
2016
9 Oct
'16
2:22 p.m.
I picked up 3 of these a while back, I am unsure of what kind of machine
they go to. The plan was to use them to prototype on, but then I found some
even better wire wrap boards and set these aside. I did not want to have to
go through getting all the wire off of them.
They are up for sale or trade if anyone is interested, I am just curious if
anyone knows what they came out of.
gallery :
https://postimg.org/gallery/1tizoqomi/
--devin
9 Oct
9 Oct
3:06 p.m.
On 10/9/2016 2:22 PM, devin davison wrote:
I picked up 3 of these a while back, I am unsure of
what kind of machine
they go to. The plan was to use them to prototype on, but then I found some
even better wire wrap boards and set these aside. I did not want to have to
go through getting all the wire off of them.
They are up for sale or trade if anyone is interested, I am just curious if
anyone knows what they came out of.
gallery :
https://postimg.org/gallery/1tizoqomi/
--devin
The edge looks like Multibus, but the height looks too tall for standard
Multibus form factor.
A friend here in Southern California did custom boards, usually for
prototypes, or one or a few off systems for such as Northrup, TRW and
Douglas and the like that ranged from board like this up to some that
were 24" x 24" and all medium scale DIP technology.
This looks neat enough that it may have been machine wrapped, and is
probably from some such custom system. The builder probably used the
multibus backplane for interconnect if for no other reason than the
backplanes would be cheap and available at the time (considering this
was probably about a $15,000 to $20,000 job).
Is the base board Augat? They had a huge line of different boards of
all sorts and shapes and sizes.
thanks
Jim
--
Note change in email address. Please use reply-to
address. TWC is changing their email and this may
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2:53 a.m.
On 10/12/2016 2:42 AM, Eric Smith wrote:
On Sun, Oct 9, 2016 at 4:06 PM, jim stephens
<jwsmail at jwsss.com> wrote:
I was at a friend's scrap operation, and in a 40 gallon drum
of breakage
there were three multibus boards in the pile. If one of them had not
had a number of pins badly clobbered, I might have carried them off.
FWIW the DIPs are not worth salvaging, going in the gold scrap bin now.
with the boards. He has 6 bin boxes completely full of many years of
salvage, starting to get to that backlog.
thanks
Jim
BTW, toy du jour
http://jimsoldtoys.blogspot.com/2016/10/part-of-satellite-spectral-analyzer…
The edge looks like Multibus, but the height
looks too tall for standard
Multibus form factor.
True, but it's not entirely uncommon for there to be
over-height
prototyping cards. 
10:21 a.m.
On 10/12/2016 02:42 AM, Eric Smith wrote:
On Sun, Oct 9, 2016 at 4:06 PM, jim stephens
<jwsmail at jwsss.com>
wrote:
Indded. The rationale was that when it was time to go from WW to PCB,
you'd get the same functionality in a standard-sized PCB.
--Chuck
The edge looks like Multibus, but the height
looks too tall for
standard Multibus form factor.
True, but it's not entirely uncommon for there to be over-height
prototyping cards. 
3:58 p.m.
On 2016-Oct-09, at 2:22 PM, devin davison wrote:
I picked up 3 of these a while back, I am unsure of
what kind of machine
they go to. The plan was to use them to prototype on, but then I found some
even better wire wrap boards and set these aside. I did not want to have to
go through getting all the wire off of them.
They are up for sale or trade if anyone is interested, I am just curious if
anyone knows what they came out of.
gallery :
https://postimg.org/gallery/1tizoqomi/
Exactly what machine they came out of, who knows, but the two different-sized card edge
connectors
and the power supply pinout would suggest they are Multibus boards.
e.g.:
http://bitsavers.informatik.uni-stuttgart.de/pdf/intel/_busSpec/9800683D_In…
see page 85
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