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01/26/06 14:36
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 		 #108366 - initializing a port as output
I have to initialise the port P1 of the 89C51 as output port with all port lines initialised to a high state i.e. 1. Now for initialising the port P1 as output, I have to give the instruction
P1 = 0x00

To make all the lines of this port as High, can I give the instruction:
P1 = 0xff;

Will it not make the port P1 as input port?

Or

will I have to define each pin of port P1 independently as:
P1.0 = 1
P1.1 = 1
and so on.

Mohit

List of 51 messages in thread
TopicAuthorDate
initializing a port as output            01/01/70 00:00      
   STOP THE BABBLE            01/01/70 00:00      
      Keil says....            01/01/70 00:00      
         Keil is wrong!            01/01/70 00:00      
            what about the bible itself            01/01/70 00:00      
               the issue is not if someone can find ref            01/01/70 00:00      
                  Dont see any confusion            01/01/70 00:00      
                     what works            01/01/70 00:00      
                     The confusion arises...            01/01/70 00:00      
                        yes that may be the thing            01/01/70 00:00      
                  We talk about the "Bible"!            01/01/70 00:00      
                     it really is a wired or configuration            01/01/70 00:00      
                        No disagree            01/01/70 00:00      
                        I agree, but all are not equal            01/01/70 00:00      
         Confguring......            01/01/70 00:00      
   Quasi bidirectional            01/01/70 00:00      
      NO, NO, NO STOP THE BABBLE            01/01/70 00:00      
         there is only output mode            01/01/70 00:00      
            no, there is NO mode!!!!!!!!!!!!!            01/01/70 00:00      
         Who is babbling?            01/01/70 00:00      
            Maybe Rude but right            01/01/70 00:00      
               Mode clarified            01/01/70 00:00      
                  No, that's wrong            01/01/70 00:00      
                     i see            01/01/70 00:00      
                     Why is this wrong??            01/01/70 00:00      
                        playing with words            01/01/70 00:00      
                           Yes            01/01/70 00:00      
                           "Mode" is the word            01/01/70 00:00      
                              what i meant            01/01/70 00:00      
                  No            01/01/70 00:00      
                     which mode            01/01/70 00:00      
                     lets play with words            01/01/70 00:00      
                  Exception            01/01/70 00:00      
                     see this            01/01/70 00:00      
                     a valid, sometimes overlooked point            01/01/70 00:00      
                        Indeed            01/01/70 00:00      
               Yes, but weak or strong            01/01/70 00:00      
            yes and no            01/01/70 00:00      
               Yes, that's it!            01/01/70 00:00      
                  one more word            01/01/70 00:00      
         What a Rudeness            01/01/70 00:00      
   No input output            01/01/70 00:00      
      Just read the port!!!!!!!!!!!!!!!1            01/01/70 00:00      
         yes            01/01/70 00:00      
            not offending            01/01/70 00:00      
               not really            01/01/70 00:00      
                  see what keil says            01/01/70 00:00      
                     about "rudeness"            01/01/70 00:00      
                        No excuse            01/01/70 00:00      
                           what agression, what rudeness            01/01/70 00:00      
                              Haha!            01/01/70 00:00      

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