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johnorun

Joined: 04 Apr 2008 Posts: 3364 Location: Chicago, IL- US
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Posted: Wed Jun 19, 2013 11:02 pm Post subject: Chip identification needed |
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I found these chips in a scrap lot.
Can anyone identify any of these?
Motorola 19-22585-03, NPAR-03
TMS 2507JC
WESTON 279344 _________________ My collection list (growing) http://johnorun.x86-guide.com/en/collection.html |
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magictom

Joined: 14 May 2009 Posts: 2281 Location: Hawaii
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Posted: Wed Jun 19, 2013 11:55 pm Post subject: Re: Chip identification needed |
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| johnorun wrote: | I found these chips in a scrap lot.
Can anyone identify any of these?
Motorola 19-22585-03, NPAR-03
TMS 2507JC
WESTON 279344 |
The first one looks like a DEC (Digital Equipment Corp) house-number, and is claimed to be a "macro-cell array" (= custom chip) here:
http://www.upgradebay.com/Products/ProductInfo.aspx?ProductID=169377676
The TMS2507 I'd guess is a ROM or PROM ... |
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johnorun

Joined: 04 Apr 2008 Posts: 3364 Location: Chicago, IL- US
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UMMR

Joined: 23 Aug 2007 Posts: 381 Location: Udine, ITALY
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Posted: Fri Jun 21, 2013 5:28 am Post subject: Motorola PGA |
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| The Motorola chip is a ECL (bipolar) LSI gate array and it likely came from a DEC VAX 8600 or 8700 CPU. These arrays have a complexity of 700-1000 NAND gates and were designed in-home by DEC using a specific homemade software (the so-called MOSAIC) and then fabricated by Motorola. You can find Motorola ECL arrays in many DEC products as well as in several Data General ECLIPSE minicomputers and in the Burroughs Series A servers. |
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Posted: Fri Jun 21, 2013 4:12 pm Post subject: |
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Thanks for these details, Paulo.
Is this a chip important enough to be worth collecting?
...or better for scrap?  |
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UMMR

Joined: 23 Aug 2007 Posts: 381 Location: Udine, ITALY
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Posted: Tue Jun 25, 2013 10:03 am Post subject: |
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| Difficult to say... It isn't a CPU so, if You are a collector of vintage microprocessors, it will be a "stranger" in Your collection. It's indeed a unusual chip (in the years, bipolar technologies - ECL and so on - have been overshadowed by CMOS). These chips aren't rare and they are not worth so much. |
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