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

From: John Robertson <jrr_at_flippers.com>
Date: Mon May 06 2002 - 19:25:39 EDT

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I got the polynomial from the HP documents on Spies http://www.spies.com/arcade/TE/HPJMay77.pdf page 8. 
Thanks for calling our attention to that BASIC utility, perhaps it now can be loaded into either ROMIDENT (and output Sigs) or ROMSUM (Bill Ung's utility - he said if anyone worked it out he'd be happy to add it in) 
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 19:25:39 2002

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