TechTools Archives: RE: Gottlieb / Q*bert scripts for the 9010A/

From: John Robertson <jrr_at_flippers.com>
Date: Mon May 06 2002 - 21:45:41 EDT

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Hi Phillip, 
I just tried your emulator on a bunch of Asteroid files and compared them with the signatures on the 9010 and I do not get the same results... Does it not setup the same Signature that HP designed and thus should it not give the same results for any file as the Fluke would do on a ROM signature test? The signatures generated by your emulator are consistent - identical files give identical signatures... 
Might I ask what the "Bit number <0 - 7>" refers to in the emulator? 
John :-#)# 
At 11:08 PM 06/05/2002 +0100, Phillip Eaton wrote: 
 
<blockquote type=cite class=cite cite>I wrote one of these a few years back. It's part of my Atari Cat Box 
signature analysis write-up which is held at 
<a href="http://www.gamearchive.com/video/manufacturer/atari/vector/signatures/" eudora="autourl">http://www.gamearchive.com/video/manufacturer/atari/vector/signatures/</a> 
It includes a very simple program source code (to aid understanding) to do 
what you mentioned in MS DOS QBasic for the Cat Box. 
You could quite easily use it as a base to write your own, or simply change 
the polynomial in mine and it'd do what you need. 
How did you work out the ploynomial? 
Cheers, 
Phillip Eaton 
> -----Original Message----- 
> From: owner-techtoolslist@www.flippers.com 
> [<a href="mailto:owner-techtoolslist@www.flippers.com" eudora="autourl">mailto:owner-techtoolslist@www.flippers.com</a>]On Behalf Of John Robertson 
> Sent: 06 May 2002 22:03 
> To: TechToolsList@flippers.com 
> Subject: Re: Gottlieb / Q*bert scripts for the 9010A/9100 
> 
> 
> 
> What we need is for some bright person to write a simple utility that 
> converts data files to signatures. The signature formula is fairly simple 
> and if combined with Bill Ung's ROMSUM would be a nice tool for our 
> package. If you don't know ROMSUM it is a dos utility that will give a 
> checksum listing plus the ROM size for a single or group of files... 
> 
> The Signature process is a CRC process that uses the following feedback 
> equation: X(to the 16th) + X(to the 12th) + X(to the 9th) +X(to 
> the 7th) + 
> 1 or 
> P(X) = X(15th) + X(9th) + X(7th) +X(4th) + 1 
> 
> So who wants to make a simple (not for me!) binary program that 
> allows one 
> to input a file and outputs it's signature? 
> 
> John :-#)# 
> 
> At 09:11 AM 06/05/2002 -0400, Kev wrote: 
> 
> 
> 
> >Anyone written any test scripts for these or at the very least have some 
> >checksum signatures? 
> > 
> >Thanks, 
> >Kev 
> 
></blockquote></html>
Received on Mon May 06 21:45:41 2002

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RE: Gottlieb / Q*bert scripts for the 9010A/9100