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???
06/12/08 16:06
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#155759 - this is a bug in the monitor
Responding to: ???'s previous message
From what I see on the net, you are using a ROM-based monitor hidden behind the PC-application. As these monitors communicate usually via serial, any change in registers concerning serial is usually detrimental and the monitor shall capture them and handle gracefully (mainly, ignore, and then mimic that it works as expected). However, they appear to have forgotten that PCON.7 is one of the SFR bits influencing the UART, so the monitor then starts communicating twice as fast as the PC application expects.

So, from what I see, this is a task for Rigel to change/update/fix.

I might be wrong of course, as I don't have the board at hand nor know I the internals of that monitor.

JW


List of 16 messages in thread
TopicAuthorDate
PCON Register on AT89C52            01/01/70 00:00      
   try ORing the bit            01/01/70 00:00      
      ORL DOES mess with other bits, too...            01/01/70 00:00      
         The Intel assembler            01/01/70 00:00      
            OK, OK,            01/01/70 00:00      
            I think the "which assembler" was directed to the            01/01/70 00:00      
   Complete initiation            01/01/70 00:00      
      Initiation code and lst info            01/01/70 00:00      
         this looks good...            01/01/70 00:00      
            I was just stepping through            01/01/70 00:00      
               Stepping through?            01/01/70 00:00      
               what happens if ...            01/01/70 00:00      
               I can set certain bits in the PCON reg            01/01/70 00:00      
                  that may be the problem            01/01/70 00:00      
                  this is a bug in the monitor            01/01/70 00:00      
                  I was beginning to think the same            01/01/70 00:00      

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