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???
02/15/08 19:19
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 		 #150900 - options:
Responding to: ???'s previous message
  • you can add 16 to DPTR using
    Save This Code
       mov   a,dpl
   add   a,#16
   mov   dpl,a
   mov   a,dph
   addc  a,#0
   mov   dph,a
    or something similar
  • you can perform 16 INC DPTRs (a bit boring), or the same in a loop (not really smart, either :-) )
  • as this is a fixed offset, you can simply perform the same calculation, using as a base (PositionN+16) rather than PositionN.

I did not quite understand what do you want to INC, please clarify.

JW

List of 15 messages in thread
TopicAuthorDate
Need help with RAM access via 8051            01/01/70 00:00      
   re            01/01/70 00:00      
      RE:            01/01/70 00:00      
      no need to put constant into dptr            01/01/70 00:00      
         How can I get the low and high parts?            01/01/70 00:00      
            what '51 assembler do you use?            01/01/70 00:00      
         push/pop A            01/01/70 00:00      
            In my asm push ACC works!            01/01/70 00:00      
               Another question:            01/01/70 00:00      
                  options:            01/01/70 00:00      
                     By inc I mean increase the value in RAM by 1            01/01/70 00:00      
                        once DPTR points to that value...            01/01/70 00:00      
            this is why it's dangerous...            01/01/70 00:00      
         You can push/pop [direct] though.            01/01/70 00:00      
            this is certainly correct...            01/01/70 00:00      

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