PROMS but from what ? - test-drb@ccmp.vtda.org

26 Aug 2010

----------------------Original Message:
Date: Thu, 26 Aug 2010 11:38:45 +0200
From: "Rik Bos" <hp-fix at xs4all.nl>
Subject: RE: PROMS but from what ?

<snip>
...
  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 ...
...
  -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
-------------------------Reply:

As Al mentioned, there is a partial list at bitsavers:
http://www.bitsavers.org/pdf/burroughs/icData/

There may also be more in some of the other manuals, and I have info on some
more as well as a "parts catalogue" that I can't put my fingers on at the
moment.

If you do have some PROMs, I'd think that there's a good chance that they're 
already programmed and therefore not very useful (but worth checking JIC).

mike