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???
09/15/05 13:22
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#101126 - 2 Hints!
Responding to: ???'s previous message
Hello Oleg
Oleg said:

MOV A,P1 ; load current state of bits 0...3
..
..
XRL P1,A ; change not masked bits


Is there any need to mov p1,#0ffh before first line?

Before it i thought in mathematical operation,first operand must only be accumlator!


List of 23 messages in thread
TopicAuthorDate
Week puzzle IV            01/01/70 00:00      
   In my opinion            01/01/70 00:00      
      no            01/01/70 00:00      
         Bufff!! then TRB            01/01/70 00:00      
            Me and my shadow, walking down the aven            01/01/70 00:00      
               You & your shadow            01/01/70 00:00      
                  http://www.coleporter.org/            01/01/70 00:00      
                     it's a hint            01/01/70 00:00      
   Well            01/01/70 00:00      
      you got it            01/01/70 00:00      
         Just OR with ones            01/01/70 00:00      
            how?            01/01/70 00:00      
   a simple solution:            01/01/70 00:00      
      not atomic            01/01/70 00:00      
         atomic not possible in general !            01/01/70 00:00      
   My solution!            01/01/70 00:00      
      Wrong            01/01/70 00:00      
      not atomic            01/01/70 00:00      
         Ok, here is the shadow            01/01/70 00:00      
            only four bits            01/01/70 00:00      
               2 Hints!            01/01/70 00:00      
                  Oh boy, do you need some bible time            01/01/70 00:00      
                  re: 2 Hints!            01/01/70 00:00      

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