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???
10/23/06 12:29
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 		 #126898 - or how about DDEC
Responding to: ???'s previous message
Hi Ian,

Unless there is some specefic benefit to treating the DPTR as a special case (e.g. economy of machine cycles), why not make a general purpose DDEC (Double DECecrement) that operates on the two-byte location beginning at the address specified. Then, DEC DPTR would just be the special case of DDEC 0x82, something easily implemented in the assembler.

Just a thought.

Joe

List of 29 messages in thread
TopicAuthorDate
Just One More...            01/01/70 00:00      
   DEC DPTR            01/01/70 00:00      
      or how about DDEC            01/01/70 00:00      
      what about            01/01/70 00:00      
         ???            01/01/70 00:00      
            who told you it is for data            01/01/70 00:00      
   Begin self destruct sequence,BSDS            01/01/70 00:00      
   DWIM            01/01/70 00:00      
   HCF ... HALT and CATCH FIRE            01/01/70 00:00      
      Synonym for BSDS?            01/01/70 00:00      
         instruction            01/01/70 00:00      
   The Missing Bit            01/01/70 00:00      
      Bit addressable            01/01/70 00:00      
         I Stand Corrected            01/01/70 00:00      
      ANL, ORL, XRL ?            01/01/70 00:00      
      The Question was            01/01/70 00:00      
         compilers like...            01/01/70 00:00      
            SFRs forever...            01/01/70 00:00      
               SFRs rule!            01/01/70 00:00      
      The Question was            01/01/70 00:00      
   There\'s always SUB (without the borrow)            01/01/70 00:00      
   XRL C,bit and XRL bit,C            01/01/70 00:00      
   in a dual dptr derivative            01/01/70 00:00      
      you mean both MOVC and MOVX, don't you            01/01/70 00:00      
         naah, just movx, mov was an oversight            01/01/70 00:00      
            some of 'em do that already, e.g. Dallas            01/01/70 00:00      
      mem to mem, not just autoincrement            01/01/70 00:00      
         mem to mem through acc            01/01/70 00:00      
         the Dallas parts do that            01/01/70 00:00      

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