Thread View: comp.protocols.misc
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Started by David Goodenough
Wed, 07 Sep 1988 21:54
12 bit checksum and CRC for KERMIT
Author: David Goodenough
Date: Wed, 07 Sep 1988 21:54
Date: Wed, 07 Sep 1988 21:54
18 lines
1206 bytes
1206 bytes
I was reading back over an early issue of BYTE that talked about the KERMIT protocol, and it mentioned that KERMIT can use a larger checksum (12 or 14 bits I think), as well as a CRC for error checking. Does anyone have any information on exactly how this is done: i.e. once I have my big checksum, how do I send it, and how do I send the CRC, and what polynomial is used. I gather that selection of CRC / checksum is determined by a byte in the parameter packet exchange: and both ends have to agree or normal 6 bit checksumming is used. Details of this would also be welcome. E-mail responses, as I don't usually read this newsgroup. Thanks in advance, -- dg@lakart.UUCP - David Goodenough +---+ | +-+-+ ....... !harvard!cca!lakart!dg +-+-+ | +---+
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