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Re: CRC (was Re: [f-cpu] F-CPU architecture...)



Yann Guidon wrote:



this can be found everywhere on the net
but "really fast algos" are not so common,
the best i have found being the one in info-zip (3,75 instructions/byte with x4 unrolling)
http://www.opensource.apple.com/darwinsource/10.4.1/zip-6/unzip/unzip/crc_i386.S

Ok I thought that was a CRC operation for the F-cpu. Just remember you need to calculate a 16 bit look up table. C is great for that. :)

However, my application needs CRC16 so i can't simply copy-paste info-zip's source code.
but don't worry for me, i'm not too bad in asm programming.

Better than 8088 asm programing. :( I did this years ago with 8 bit CRC ??? with refernce from BYTE.
regards,
YG

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