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'Implementing CRC-16 (Can't recall the method used)'
1996\12\22@132544 by Customized Controller Solutions

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My fellow Picsters... Let me make one thing perfectly clear...

I'm confused.  I had though I'd known how to implements CRC-16.
But, after a phone conversation dealing with LRC, of which I'd
not heard of before, I found that I had forgotten the method
of implementing CRC-16.

I'm not really looking for the PIC source for this, as it
will be used in an 8051.  If anyone post either 8051 or PIC
source, I wouldn't complain.  I'd slap it into my source code
library so fast that it would make my hard-drive spin.

Mainly seeking the description of the method.

Thanks in advance.

Brent Pollock
Customized Controller Solutions
spam_OUTccsTakeThisOuTspamewol.com

1996\12\23@204656 by Jon Anders Haugum

picon face
>My fellow Picsters... Let me make one thing perfectly clear...

>I'm confused.  I had though I'd known how to implements CRC-16.
>But, after a phone conversation dealing with LRC, of which I'd
>not heard of before, I found that I had forgotten the method
>of implementing CRC-16.

>I'm not really looking for the PIC source for this, as it
>will be used in an 8051.  If anyone post either 8051 or PIC
>source, I wouldn't complain.  I'd slap it into my source code
>library so fast that it would make my hard-drive spin.

>Mainly seeking the description of the method.

If you look up in the application note 27 from dallas
(http://www.dalsemi.com/DocControl/PDFs/app27.pdf) you will find a description
of a 8-bit CRC (a.k.a DOW-CRC) implementation on an intel processor. This
also gives a quite good description of CRC, and it should not be to difficult
to expand it to CRC-16. The polynomial for CRC-16 is X16 + X15 + X2 + 1


--
Jon Anders Haugum            .....jonahKILLspamspam@spam@sn.no            http://www.sn.no/~jonah

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