Re: A83: Checksum


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Re: A83: Checksum




Hehe, thanks but the message is about two hours too late. I was using
83pformat.txt anyway. The thing that tripped me up was what did that
sentence mean. Finally I figured out that it meant the sum of all the data
starting at the 37th byte of the file and going to the byte before the
checksum. Then the checksum would be the remainder when that value was
divided by 65535.

From: Chris (Apparatus)
e-mail: apparatus@mediaone.net

----- Original Message -----
From: "Jeremy" <jedrake@linknet.kitsap.lib.wa.us>
To: "Assembly-83 List" <assembly-83@lists.ticalc.org>
Sent: Sunday, October 29, 2000 12:00 AM
Subject: Re: A83: Checksum


>
> This comes from 83pformat.txt from www.ticalc.org.  This file documents
> the structure of 83p files very well.
>
>  * The checksum is one word, the sum of all the bytes from byte 37 to
>    the last byte before the checksum, modulo 2^16-1 to fit in one word
>
> Jeremy
>
>
>
> On Sat, 28 Oct 2000, Apparatus wrote:
>
> >
> > How is the checksum in the *.83p file calculated?
> >
> > From: Chris (Man on the Moon)
> > e-mail: apparatus@mediaone.net
> >
> >
>
>




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