TechTools Archives: Re: Fluke 9010A upgrade needed

From: John Robertson <jrr_at_flippers.com>
Date: Sat Feb 26 2000 - 08:38:12 EST

<html>
So far as I know, most eprom programmers and the CAT box all use the same process for calculating checksums, just a straight additive and throw away the overflow. The checksums that Kurz-Kasch programmers and signature devices is also the same, so I suspect the majority of devices use the same process for making checksums (additive). 
 
There is a program for making checksums from the rom file (called ROMSUM-on my site for download) this will create a simple checksum of any single or group of files on screen (DOS). But this would not be very convenient for routine troubleshooting and that was the point of finding someone to re-write the Fluke 9010A code to simplify the operation... 
 
John :-#)# 
 
At 08:52 PM 2/25/2000 -0500, you wrote: 
<blockquote type=cite cite>John, 
 
   Q:  Does everyone use the same method to compute checksums?  I don't 
think that they do. 
 
   It should be easy to dump the ROM listing and then write a program to 
compute the checksum from the listing.  (or maybe ignorance is bliss!) 
 
   Joe 
 
At 12:09 PM 2/25/00 -0800, you wrote: 
>Help! 
> 
>I, and many other folks cursing the 9010A, would REALLY like the code 
>modified to give CHECKSUMS instead of the weird FLUKE "signature". As the 
>base unit uses a Z80 I was hoping some genius out there would be interested 
>in rectifying this serious oversight of Flukes'...any takers? Reward! 
> 
>John :-#)# 
> 
>  John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 
>  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) 
>  http://www.flippers.com 
>         "Old pinballers never die, they just flip out."    
> 
> To UNSUBSCRIBE from techtoolslist, send a message with "UNSUBSCRIBE" in the 
> message body to: techtoolslist-request@flippers.com. Please direct other 
> questions, comments, or problems to jrr@flippers.com. 
> 
></blockquote></html>
Received on Sat Feb 26 08:38:12 2000

This archive was generated by hypermail 2.1.8 : Tue Dec 02 2003 - 18:40:33 EST

Re: Fluke 9010A upgrade needed - Z80 gurus around?