> I didn't say you should "always avoid".  For the record, 
> I have a ENC28J60 / PIC18F4620 / SD Flash card 
> project happily running on my bench right now (designed 
> the hardware this past December). 
So either you don't use the build in checksum calculations,...
... or you don't border about errors you don't see ;-)
Stef

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