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???
08/29/11 06:05
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#183509 - how to use bit 9 for data bytes?
Responding to: ???'s previous message
bit 9 is what distingguishes data bytes from "control" bytes:

bit 9 SET identifies a byte as a "control" byte;

bit 9 CLEAR identifies a byte as a data byte.

Erik's suggestion was that you have a "control" byte at both the start and the end of a message: http://www.8052.com/forum/read/183505

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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