PPM Checksum

[mehdi]

someone can tell me how to calculate ppm checksum!!
i mean the Algo not a soft b'cause i'm trying to make a ppm editor
thanks

[fan]

hi

phar.nebu.pl/~phar/ppm_fixer_source.zip


check this /n/images/smiles/icon_smile.gif

[mehdi]

someone can explain to me more !!!
i dont understand ASM sources well