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Old September 19th, 2006   #2
sblair
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Shaun,

If I recall correctly the Message Length max is 255. That field points to the Slot # of Checksum High. So I believe the max packet is 257 bytes.

If each of those bytes was 255, then the Checksum would be 65535. So in that case it wouldn't roll over.

It would be best for everyone to implement it as a modulo anyway as there will be less problems when/if there is any expansion to it in the future.
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