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 :-#)#