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tgsaba
Joined: 07 Apr 2019
Posts: 2
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 Posted: Sun Apr 07, 2019 2:36 pm Post subject: Intel C8080 K9896 |
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| Any interest in this item? White ceramic body with gold pins/top. i C8080 K9896 stamped on it. Never been used and in its original clear plastic shipping container from MITS from 1974. Has the word Mexico stamped underneath. Conductive foam is deteriorating. I purchased this CPU 45 years ago for a project that never materialized. Email me at tgsaba@bellsouth.net and will send pixs. Thanks, Ted |
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Mon Apr 08, 2019 6:57 am Post subject: |
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Mail sent. As we had bad experience here with new members, only acting as sellers, multiple selling the same item and vanishing right after payment I'll keep posting in this topic.
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You may use the photos I have posted here under CC BY-NC-SA license. |
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Mon Apr 08, 2019 7:14 am Post subject: |
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Got Photos: The anti-static foam has dissolved 3 of the pin tips, #40, #32 and #21
And there's one offer I will not compete with. |
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CHips
Joined: 01 May 2016
Posts: 834
Location: Switzerland
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| Posted: Mon Apr 08, 2019 9:25 am Post subject: |
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Interesting... I have a C8080 with the same code K9896, but MEXICO in upper cases. Thank you for sharing. No top pics?
Wow, how could foam destroy pins? If it was never moved from the original packaging I expected it to be Nos. Should I never store CPUs using foam, or it is just due to poor environment/handling?
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Stelo.xyz Museum (CPU Collection and more) |
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crazybubba64
Joined: 03 Jul 2018
Posts: 1371
Location: WI, USA
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| Posted: Mon Apr 08, 2019 9:30 am Post subject: |
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| CHips wrote: | | Wow, how could foam destroy pins? |
I've never seen it dissolve anything, but certain kinds of foam get downright nasty when they start to break down. Especially the foam used in many IBM selectric typewriters and PS/2 computers. It becomes a consistency closer to grease than a solid.
I'm not sure how newer types of foam fare long-term, as they are all a bit different. If any foam seems squishy and almost sticky, it's on its way out. |
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Mon Apr 08, 2019 10:38 am Post subject: |
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Its the so-called black death. The rotting foam develops chemicals that corrode the pins. Interestingly tin pins resist better than gold pins.
I have a top side photo (not here on the phone) but it just shows the two lines. Top looks nice. |
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vmr_
Joined: 01 Sep 2018
Posts: 530
Location: Ireland
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| Posted: Tue Apr 09, 2019 5:57 pm Post subject: |
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| The top photo |
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