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Old September 19th, 2006   #1
Task Group Member
Join Date: Sep 2006
Posts: 26
Default Checksum curiosa

The spec states that...
The Checksum field is the unsigned, modulo 0x10000, 16-bit additive checksum of the entire packet’s slot data, including START Code.
However, the checksum covers a maximum of 255 bytes, each with a maximum value of 255, so the maximum possible checksum is 65025, or 0xfe01. So the checksum is in fact not modulo at all.

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