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???
08/30/11 09:42
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#183535 - Strong work
Responding to: ???'s previous message
Andy Neil said:
Note that MDB sets the 9th bit at the end of a Slave (response) message only - it does not set it at the end of a Master (command) message.

Thus there can be no confusion as to whether it signifies the start or end of an MDB message.


That sounds like strong work from the folks that invented this MDB protocol...

Slaves know when to begin receiving data based upon the sighting of the 9th bit being set. Masters know when they can stop receiving a response based on seeing the 9th bit arrive.

Michael Karas


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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