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???
08/29/11 20:50
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#183530 - One byte
Responding to: ???'s previous message
I would prefer to only have one byte in each message - the first - having the ninth bit set.

One problem with the ninth bit set in the checksum, is that the checksum byte can look identical to the address of a slave, falsely look like the start of a message.

It's much easier to follow the address byte with a command + length - unless length can be always be deduced from the command numbers, in which case there isn't a need for any length byte.

List of 17 messages in thread
TopicAuthorDate
Multiprocessor Communication 8052            01/01/70 00:00      
   where is bottleneck?            01/01/70 00:00      
      That's the usual approach            01/01/70 00:00      
         one comment            01/01/70 00:00      
            9th Bit - How ?            01/01/70 00:00      
               how to use bit 9 for data bytes?            01/01/70 00:00      
               one form of 9th bit use            01/01/70 00:00      
                  One byte            01/01/70 00:00      
                     One Byte !!!            01/01/70 00:00      
                        re: 1 byte - MDB            01/01/70 00:00      
                           Strong work            01/01/70 00:00      
                              Just as there is a timeout            01/01/70 00:00      
                        my reason            01/01/70 00:00      
                            Protocol should preferably support dry-counting for EOP pos            01/01/70 00:00      
      Methods in brief            01/01/70 00:00      
         At least 1 packet less (sic)            01/01/70 00:00      
         Neither!            01/01/70 00:00      

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