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???
07/25/08 12:34
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Msg Score: 0
 -2 Answer is Wrong
 +2 Underrated
#157049 - Remember that there are two data pointers
Responding to: ???'s previous message
Most 8051s have 2 data pointers. A specific data pointer is selected by a bit in a control register (frequently bit 0 in AUXR1).

If you are not getting the desired results, check to make sure that some other routine (interrupt?) isn't switching the bit on you.

List of 16 messages in thread
TopicAuthorDate
DPTR to hold 16 bit address            01/01/70 00:00      
   No. It is just a register.            01/01/70 00:00      
   Remember that there are two data pointers            01/01/70 00:00      
      let me get on my soapbox            01/01/70 00:00      
         More information is always helpful.            01/01/70 00:00      
         device info            01/01/70 00:00      
      Is that true?            01/01/70 00:00      
         Two?            01/01/70 00:00      
            You can ignore multiple DPTRs            01/01/70 00:00      
         Definition of "most"            01/01/70 00:00      
            my take on multiple dptrs            01/01/70 00:00      
      What idiot gave Lynn a -1 point??            01/01/70 00:00      
         Overreacting?            01/01/70 00:00      
         Karma            01/01/70 00:00      
         Calm down - it's perfectly valid and correct            01/01/70 00:00      
   Don\'t use any register            01/01/70 00:00      

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