Re: Fluke Signatures....

From: John Robertson <jrr_at_flippers.com>
Date: Sun Oct 13 2002 - 01:45:03 EDT

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Seed file? I used the Pacman 6E as I recall. Just ran the calculator
utility included with Hexedit (http://www.expertcomsoft.com/) a nice
windows file editor - search and replace etc...

There was mention that the signature was created using "The ROM signature
is obtained by successively dividing the data in ROM by a binary number" in
the manual as you may recall...what order would the data be divided? Would
this matter?

John :-#)#

At 11:38 PM 12/10/2002 -0400, Kev wrote:

>Ah yes but what are you using for a seed file for the CRC 16 /32
>calculators?
>
>I belive the Fluke version is possibly based on some of the original
>articles that were in BYTE circa 1983. I'll need to research that a bit
>more.
>
>Kev
>
>
>
> >Still looking for this one - what is the algorithm used to generate the ROM
> >Signature in the 9100/9010s? Have tried almost all the CRC programs I could
> >download, none were correct. It's not CRC-16, CRC-32, CCITT, CHECKSUM....
> >
> >Anyone get any further?
> >
> >Attached is the file that I used to try and identify the signature and
> >these are the results:
> >
> >CRC-16 =58B8
> >CRC-32 =C1E6AB10
> >CCITT =E63C
> >
> >(the "Correct" Fluke signature is = 8B1A)
> >
> >The file is from a video game, it's a 4K size chunk of the main program...
> >
> >John :-#)#
> >

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Received on Sun Oct 13 10:09:31 2002

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