Nevertheless, as it often happens with textbooks dealing with a topic exhaustively, it is practically useless. I have described my common practice in the other thread (to use the online CRC calculator to get the correct result and base the particular implementation on the settings of it).

This message and the code was just as a showoff from me - and maybe a little help for those who want to implement this particular variant with this particular poly (it's relatively widespread). It's brutally optimised asm for that particular poly, and as such, is absolutely nonportable etc. (the table version is of course different - but that is also too boring... :-) )

I think it makes sense to build such snippets - this sort of algorithms is used widely, has well defined inputs and outputs, and IMHO it always makes sense to try to do things as good as possible (hello, Russ! :-) ).

JW