Chip identification needed

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johnorun



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

PostPosted: Wed Jun 19, 2013 11:02 pm    Post subject: Chip identification needed Reply with quote

I found these chips in a scrap lot.
Can anyone identify any of these?

Motorola 19-22585-03, NPAR-03
TMS 2507JC
WESTON 279344

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magictom



Joined: 14 May 2009
Posts: 2281
Location: Hawaii

PostPosted: Wed Jun 19, 2013 11:55 pm    Post subject: Re: Chip identification needed Reply with quote

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

PostPosted: Thu Jun 20, 2013 12:37 am    Post subject: Reply with quote

Thanks for the info!

any info on the WESTON?

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UMMR



Joined: 23 Aug 2007
Posts: 381
Location: Udine, ITALY

PostPosted: Fri Jun 21, 2013 5:28 am    Post subject: Motorola PGA Reply with quote

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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PostPosted: Fri Jun 21, 2013 4:12 pm    Post subject: Reply with quote

Thanks for these details, Paulo.
Is this a chip important enough to be worth collecting?
...or better for scrap? Question
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UMMR



Joined: 23 Aug 2007
Posts: 381
Location: Udine, ITALY

PostPosted: Tue Jun 25, 2013 10:03 am    Post subject: Reply with quote

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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