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PostPosted: Sun Oct 06, 2019 1:24 pm 

Joined: Tue Jan 22, 2019 11:31 pm
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Please excuse the clutter in the pictures. I'm out of storage room and can't really move stuff around so easily. I have mainframes and I'm not sure if there are buyers for them as a whole piece or if it's worth breaking them down for all the boards inside. Any ideas?


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PostPosted: Sun Oct 06, 2019 4:30 pm 
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That’s some older pc/micro computer stuff. Looks pre-pentium era. Whole and working the normal ebay range is somewhere around $25-$50 but shipping eats most of it up.
Apart you have some valuable processors, dip socket ICs large socket or telco grade motherboards. Plus whatever else is added into them.

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PostPosted: Sun Oct 06, 2019 11:00 pm 

Joined: Tue Jan 22, 2019 11:31 pm
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Found more info on these if it helps...

IBM AS/400 9404

https://www.ibm.com/ibm/history/exhibit ... _4010.html

https://www.ebay.com/sch/i.html?_from=R ... 4&_sacat=0

The Wang unit doesn't have a part number I can see. It's like 2 feet by 2 1/2 feet and must weigh 100 lbs. It took 2 of us to haul it back here. Same thing with the AS/400.

The small IBM unit is a tape drive:

https://www-01.ibm.com/common/ssi/ShowD ... _locale=en

For the smaller Wang unit is also a tape drive.


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PostPosted: Mon Oct 07, 2019 1:48 am 
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Yep. Looks right. Lol
The AS series were RISC microcomputers. Either a 3rg gen IBM RISC chip or a 1st gen power processor. Either way a socketed ceramic is a near guarantee.

The W micros were mostly DIP CPUs in that era. So you score big with one or more 8086 class chips or strike out with replacement plastic silver leg ICs depending on how much repair was done to it.

The tape units produce a peripheral or CD/DVD class board plus extras.
None of those are really hard to take apart.

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PostPosted: Fri Oct 25, 2019 12:39 am 

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lostinlodos wrote:
The W micros were mostly DIP CPUs in that era. So you score big with one or more 8086 class chips or strike out with replacement plastic silver leg ICs depending on how much repair was done to it.


I would like to know how to identify the CPU. I tore most of it apart but don't see anything that looks like a CPU chip that I'm used to seeing. I'm not really familiar with the terminology you're using like "W micros" and "DIP." Any pointer you can give me how to identify the CPU?


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PostPosted: Fri Oct 25, 2019 1:47 am 
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vectro wrote:
I would like to know how to identify the CPU. I tore most of it apart but don't see anything that looks like a CPU chip that I'm used to seeing. I'm not really familiar with the terminology you're using like "W micros" and "DIP." Any pointer you can give me how to identify the CPU?


W— wang
DIP is dual inline pin; CPUs look like standard ICs. Usually black or grey in colour but could be white if the CPU is old enough or if an eastern sourced replacement was added. You can see an example here. Boardsort’s example: an Intel 287 coprocessor.

Post photos of the principal motherboards and I can point to them rather quickly for you.

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PostPosted: Wed Oct 30, 2019 12:21 pm 

Joined: Tue Jan 22, 2019 11:31 pm
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Trying to narrow this down, but since they're torn apart and the boards are already in different piles, I don't know what part is what. I know I posted 4 threads with pictures of all my 80s stuff..

viewtopic.php?f=4&t=18667
viewtopic.php?f=4&t=18670
viewtopic.php?f=4&t=18660
viewtopic.php?f=4&t=18589


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PostPosted: Wed Oct 30, 2019 1:35 pm 
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18589, has various “motherboards”. Like first post 1 with the sockets empty. Others in various posts like 23 in 18589 have CPUs soldered to the board.

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PostPosted: Fri Nov 08, 2019 12:10 am 

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lostinlodos wrote:
You can see an example here. Boardsort’s example: an Intel 287 coprocessor.

Post photos of the principal motherboards and I can point to them rather quickly for you.


I found another board that was in a separate place from the others. Is that the chip in the middle and does it pay more to remove it or something?


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PostPosted: Fri Nov 08, 2019 2:46 am 
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Grey and white chips are the processor and controller
This board is high telco

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