PROMS but from what ?

Rik Bos hp-fix at xs4all.nl
Thu Aug 26 04:38:45 CDT 2010


 

> -----Oorspronkelijk bericht-----
> Van: cctalk-bounces at classiccmp.org 
> [mailto:cctalk-bounces at classiccmp.org] Namens MikeS
> Verzonden: donderdag 26 augustus 2010 5:44
> Aan: cctalk at classiccmp.org
> Onderwerp: PROMS but from what ?
> 
> --------------Original Message
> 
> Date: Wed, 25 Aug 2010 21:06:37 +0200
> From: "Rik Bos" <hp-fix at xs4all.nl>
> Subject: PROMS but from what ?
> 
> I aquired a lot of small DIL14/16 PROMS ceramic package with 
> a 8 digit number on it some of the numbers are :
> 2584 0821
> 2574 6975
> 2571 5418
> 2600 1529
> 1447 3581
> 1447 3540
> 2600 1495
> 1447 3797
> 2600 1487
> 2603 2623
> 2625 5562
> 2554 0888
> 2600 1495
> 
> I can't find any reference about them, so if some one 
> recognizes the numbers or can use them let me know (I've a 
> few hundreds of them) If no one wants them I'm going to 
> archive them in the big metal bin.
> 
> 
> -Rik
> 
> -------------------Reply:
> 
> Are you sure that they're PROMs?
> 
> They might be Burroughs numbers, but not PROMs (at least not 
> the ones I looked up).
> 
> For instance:
> 
> 1447 3581    7438    4x2 NAND gate
> 1447 3540    7410    3x3 NAND gate
> 1447 3797    9322    4x2to1 MUX
> 2600 1495    7404    6xINV
> 
> mike
> 
> 
> 
Mike,

Thanks, to be honest no I'm not sure.
I was told it were proms and some of the ic's did have labels on them.
When I removed on it was a 74S571J which is a 2K prom.
Do you have a xref list for Burroughs parts or know where I can find one
If any one needs one or more of those let me know.

-Rik




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