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gp2 checksums

Posted: 10.01.2012, 17:29
by buu
Hello everybody,

does anyone of you know which algorithm is used for the checksums in many gp2 files (last 4 bytes at the end of tracks, setups, and so on)?
The first 2 bytes seem to be checksum-8 but how do I calculate the last two ones? :-k

Thanks in advance
b.uu.