26 Aug
2010
26 Aug
'10
9:38 a.m.
-----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