Checksum question

TBK terryk at foothill.net
Mon Jun 22 13:28:50 GMT 1998


Since the checksum is part of the rom data, it can't be included in the
checksum. That would make it self modifying. Once you calculated it, it
would change the checksum. The checksum, vin, and usually the prom ID are
not in the checksum calc (on some, the ID is part of the checksum range).

TK
-----Original Message-----
From: Jason Weir <jweir at worldnet.att.net>
To: DIY_EFI <DIY_EFI at efi332.eng.ohio-state.edu>
Date: Monday, June 22, 1998 5:39 AM
Subject: Checksum question


>Why when using 3 different editors do I get 3 different checksums? I am
>using GME, Hex Workshop, and Needham's PB-10 Software? All the same bin
>file, have I got the settings wrong? must have, can anyone shed any
>light on this for me? thanks Jason Weir
>
>--
>Jason Weir - 88 YJ - 258 / Howell TBI  145K and counting
>Fayetteville, North Carolina
>JTW Web pages at http://home.att.net/~jweir
>mailto:jweir at worldnet.att.net
>
>
>




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