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???
04/24/08 06:37
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#153934 - Not the (complete) answer?
Responding to: ???'s previous message
Michael Karas said:
So go ahead and use the MOVX @Ri instructions for the XRAM addresses 00h-FFh. For higher addresses you will have to resort to using DPTR.

I'm not convinced that the part you cited there specifically says that the high address byte will be zero when MOVX @Ri is used?

Some other derivatives have a specific SFR to set the high-order bits;
On a classic 8051, you'd have to make your own arrangements to set any high-order address bits.


List of 6 messages in thread
TopicAuthorDate
movx @ri,A in uPSD3200 micros            01/01/70 00:00      
   Try the datasheet            01/01/70 00:00      
      Not the (complete) answer?            01/01/70 00:00      
   internal/external memory in uPSD32xx            01/01/70 00:00      
      Thanks a lot            01/01/70 00:00      
         I had the 52 pin version, too...            01/01/70 00:00      

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