Re: Need help: power programming eprom

[Bob Valentine <bob@tecmark.com>]

Recalculate the checksum, or turn off the checksum.   In my '730 it is the
total from $0008 to the end of the program.   Checksum is stored at
$0006-$0007.

Use a value of AA to turn off the checksum, I haven't tried it yet.

-> Bob Valentine
-> bob@tecmark.com

At 09:01 PM 4/30/2000 EDT, you wrote:
>I am having a problem getting my car's computer to "accept an eprom".
>If I put the exact same program into an eprom that was in my original chip 
>it works fine, but as soon as I change any data, the car's computer chokes 
>on it and goes into "limp home mode" when the service engine light stays on 
>and my diacom won't communicate. Is there some step I am missing?  Do you 
>have to change some kind of check sum on the eprom for the computer to 
>recognize a change or something?
>
>
>Jeff
>93 Formula
>77 Nova
>http://Go.To/LilDemon
>

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