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PostPosted: Sat Oct 21, 2017 12:58 am 

Joined: Sat Mar 26, 2016 9:54 am
Posts: 371
Location: Mississippi
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PostPosted: Sun Oct 22, 2017 1:24 pm 
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Joined: Fri Jan 31, 2014 10:22 am
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Not much to that board and it appears that the chips do not have gold legs. I would give it peripheral. Lostinlodos may chime in as well.

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PostPosted: Sun Oct 22, 2017 4:06 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3560
Location: Low DOS
I was hoping you or mls had something more concrete.
My personal thought is green brown fibre with metal.
Here’s why: That’s an 8086 cpu and 8087 coprocessor, and there’s gold pins for the dip socket it fits in (underneath). And despite the later generation missing individual gold legs those are ceramic. Telling me we’re early 90s, probably 89, 90 or 91. Meaning still somewhat of value in scrap.
It’s higher than peripheral. But I can’t justify telco.
There’s too much board for without metal classing.. hence my thought
Green brown fibre with metal.

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PostPosted: Sun Oct 22, 2017 4:19 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3560
Location: Low DOS
My database says it’s a peripheral controller and a quick net search says it’s a serial interface.
My guess is a CAD/CAM unit of some sort, like early 3d printing when they took up whole rooms, not a used microwave, to store. Meaning that what’s there isn’t going to be junk, I can also now see the gold pin holes, guessing a copper or silver sandwich board off hand.
I’ll double down on green brown fibre with metal. My Final answer.
;) lol

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PostPosted: Sun Oct 22, 2017 9:30 pm 

Joined: Sat Mar 26, 2016 9:54 am
Posts: 371
Location: Mississippi
Thank you guys!! I know I can always count on y'all.


I have more too follow..........


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PostPosted: Mon Oct 23, 2017 12:49 am 

Joined: Fri Jan 31, 2014 12:53 pm
Posts: 430
Those chips should go as standard ic chips... even being 8086 models (without the gold cap, brazing, and legs there is little value to weight ratio they tell me)... however it looks like both are soldered on... I would throw that in with telecom because most of the weight is chip (with very little extra board) and the price of telecom is a bit under the ic chip price.

That's not to say you can't set it aside and ask if it is a better grade.


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PostPosted: Mon Oct 23, 2017 2:44 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3560
Location: Low DOS
Well here’s a first. All three of us are different. Omg :O
Shoot Chris an email of the photo and let us know what he says.

It’s definitely at least telco since A bare sandwich board can clear telco when silver or nickel. That was my initial thought buy the ceramic 80k CPUs are throwing me.

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-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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PostPosted: Tue Oct 24, 2017 1:06 am 

Joined: Sun May 17, 2015 4:17 pm
Posts: 40
Location: Md Eastern Shore
with so much electronics out there for scrapping it is a tough job to sort. To all the pros I say thank you, because if you all have different opinions on some items it means that when I take my stuff in and they tell me I misjudged some of my items I won't feel like a big dummy.


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PostPosted: Tue Oct 24, 2017 3:55 am 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3560
Location: Low DOS
It’s a rarity all three of us would be different. Tells you how unique that piece is in general scrap terms. (Not that we don’t all but heads from time to time regardless). :)
K is an original; mls goes in person and I’ve been sending strange, weird, bizarre and one-offs since day 1.
Bottom line it’s one Chris and Bruce will need to decide on.

I’ve honestly never seen an 86 and 87 on a single socket with no buffer at all. Seems to me to be a bad idea to put two memory independent ICs on a single socket! Forget about timing cycles.
Looks to me like a race condition issue on so many fronts; just glad I wasn’t writing code for that disaster.

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-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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PostPosted: Tue Oct 24, 2017 4:19 am 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3560
Location: Low DOS
Final thoughts: interforum
MLS, I’m really lost on this one. My thoughts were that prior to 1996 and the introduction of the plastic IC 80XXX series they still used the identical die.
With that we can subtract the die value from the 80XX gold cap CPUs by offsetting the cap value with pentium ceramic value, the pin value vs an IC for pent ceramics. Then in return adding the ceramic weight back in.
What I’m left with is between $4 and $8 (per lb) in an actual value based on what I conclude to be boardsort’s valuation table.
Making either telco or fibre or IC all possibilities.

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-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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