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000478_news@columbia.edu _Tue Mar 25 08:49:55 1997.msg
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From: hunt5249@uidaho.edu (Aaron Huntsinger)
Newsgroups: comp.protocols.kermit.misc
Subject: CRC
Date: Mon, 24 Mar 1997 21:51:40 GMT
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Xref: news.columbia.edu comp.protocols.kermit.misc:6810
I am trying to write a kermit program for a motorola microcontroller. I
cannot seem to agree with the BCC that Procomm is sending with its
packets.
Packet: 01 30 20 53 7a 2c 20 40 2d 23 59 31 7e 2a 20 20 7a 48 0d
procomm says that the BCC here is 48.
I have code written by two different people, one from a professor of mine
and the other from the book "Serial Protocols" by Tim Kientzle, to
generate the CCITT CRC16 and both pieces of code generate the BCC of 61bb.
I've done this with a nak packet
Packet: 01 23 20 4e 33 0d
again procomm says the BCC is 33. my two pieces of code both agree on
the value 6416.
1)what am i missing?
Aaron Huntsinger