Scott Dattalo wrote:
> There's not much now, but I've put some optimized CRC routines onto a
> web page:
>
> http://www.dattalo.com/technical/software/pic/crc.php
>
> You'll find the two routines that were discussed recently and a third
> that I also needed.
>
> Scott
>
> --
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Scott, even so that the CRC-CCITT (SDLC/HDLC FCS calculation) routine is
wrong at that url.
(http://rcswww.urz.tu-dresden.de/~sr21/crc.html)

Below some examples of its calculation and what it should be:

input hex    result     correct
---------   --------   ---------
  01          F1D1       1E0E
  02          C1B2       2C95
01020304      5349       C66E

There is no way to make it correct, inverting, direct/indirect, reversing,
etc.
My "trusty" little DOS assembly routine still doing it correct. :)

I already sent an email to the owner in Germany.

Scott, your url is being very difficult to access:

D:\>ping www.dattalo.com
Pinging vhost.kolwynia.com [209.66.107.31] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.

Wagner.

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