26 Aug
2010
26 Aug
'10
3:43 a.m.
--------------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
26 Aug
26 Aug
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
5:12 p.m.
-----Oorspronkelijk bericht-----
Van: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] Namens Al Kossow
Verzonden: donderdag 26 augustus 2010 18:58
Aan: cctalk at classiccmp.org
Onderwerp: Re: PROMS but from what ?
On 8/26/10 2:38 AM, Rik Bos wrote:
Thanks Al,
I found it.
http://www.bitsavers.org/pdf/burroughs/icData/26060475_IC_data_Aug75.pdf
-Rik
Do you have a xref list for Burroughs parts or
know where I
can find
one
There should be one in the field service manuals on
bitsavers. I know I scanned one at some point.
5:29 p.m.
On 2010 Aug 26, at 2:38 AM, Rik Bos wrote:
>
> I aquired a lot of small DIL14/16 PROMS ceramic package with
> a 8 digit number on it some of the numbers are :
...
> 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.
Adding to mike's and ethan's cross-refs, I have a large core memory
module from Burroughs from 1979, the IC's have both Burroughs and 7400
part numbers on them. Out of your list I was able to cross-ref 3 of
them, although 2 of those have already been cross-ref'd:
mike ethan brent
2584 0821
2574 6975
2571 5418
2600 1529
1447 3581 7438 7438N 7438J[1]
1447 3540 7410 7410F
2600 1495 7404 74S04F [2]
1447 3797 9322 SN74157
2600 1487 74S00F
2603 2623
2625 5562
2554 0888
2600 1495 (listed twice)
([1] over-stamped with 2624 8922)
(ethan's list shows a different burroughs # for 7404)
--
For my own interest, I wish I knew what machine this core memory came
from. A large plug-in PCB about 18 inches square, with a daughter-board
containing a folded planar array mounted to it. 32 KWords, 20
bits/word.
7:38 p.m.
Brent Hilpert wrote:
On 2010 Aug 26, at 2:38 AM, Rik Bos wrote:
I would advise archiving the PROM data - and possibly posting it
somewhere (bitsavers?) so if someone someday needs that PROM they could
reconstruct it...
In my industry (coin-operated amusements) lots of folks have spent a lot
of time archiving Eproms/Proms/Roms and this often saves a game. We
archived thousands of Eproms and Proms over the years and burn them for
folks that don't have the ability (for a small fee) or send the code if
they can burn (and trade something back).
John :-#)#
>
> I aquired a lot of small DIL14/16 PROMS ceramic package with
> a 8 digit number on it some of the numbers are :
...
> 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.
Adding to mike's and ethan's cross-refs, I have a large core memory
module from Burroughs from 1979, the IC's have both Burroughs and 7400
part numbers on them. Out of your list I was able to cross-ref 3 of
them, although 2 of those have already been cross-ref'd:
mike ethan brent
2584 0821
2574 6975
2571 5418
2600 1529
1447 3581 7438 7438N 7438J[1]
1447 3540 7410 7410F
2600 1495 7404 74S04F [2]
1447 3797 9322 SN74157
2600 1487 74S00F
2603 2623
2625 5562
2554 0888
2600 1495 (listed twice)
([1] over-stamped with 2624 8922)
(ethan's list shows a different burroughs # for 7404)
--
For my own interest, I wish I knew what machine this core memory came
from. A large plug-in PCB about 18 inches square, with a
daughter-board containing a folded planar array mounted to it. 32
KWords, 20 bits/word.
5238
days inactive
5238
days old
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