Re: [cc65] CRC-32

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From: Spiro Trikaliotis (trik-news_at_gmx.de)
Date: 2003-09-22 13:33:49 

Hello,

On Mon, Sep 22, 2003 at 01:16:29PM +0200, Ullrich von Bassewitz wrote:

> Well, I had the same problems as Magervalp (crc 32 functions that do not work
> together). And, checking the polynomial mentioned in the source code available
> from 6502.org doesn't match the one I've used for years in my own code.

I don't know your exact code. Normally, CRC32 are calculated with MSB first.
Anyway, to optimize the code, depending on big-/low-endianness, some
algorithms in fact need a reversed polynomial. Have you checked if this is
the case in the polynomial you used?

Just a thought,
   Spiro.
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