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???
02/08/05 18:15
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#86948 - more
Responding to: ???'s previous message
OK, this is for MOVX @DPTR. My question #1 was, what about MOVX @Ri.
.....
My question #2 was, whether this "reappearance" of Port2 SFR is accompanied by the 2-oscillator strong pullup, or not.


If it is @Ri, there is no reappearance of P2. In that case the P2 contents (latch and possible holddowns) is the high address and do not change.

The "schematic" of the ports strongly suggest (the XOR) that a strong pullup will occur.

Erik



List of 29 messages in thread
TopicAuthorDate
P2:R0 as memory pointer            01/01/70 00:00      
   Read the cpu data!            01/01/70 00:00      
   P2 readback            01/01/70 00:00      
   Re            01/01/70 00:00      
      Thank you all            01/01/70 00:00      
         Interesting            01/01/70 00:00      
            very well described            01/01/70 00:00      
               This is NOT in the            01/01/70 00:00      
                  ch3 pg 6            01/01/70 00:00      
                     none of them            01/01/70 00:00      
                        more            01/01/70 00:00      
                  An experiment - AT89C8252            01/01/70 00:00      
                     not necessarily            01/01/70 00:00      
                        sure not necessarily            01/01/70 00:00      
                           talking about memory            01/01/70 00:00      
                  MOVX multiplexed with P2 SFR data            01/01/70 00:00      
                     Now I say: HUH            01/01/70 00:00      
                        huh            01/01/70 00:00      
                           Thank you            01/01/70 00:00      
                              what datasheet says            01/01/70 00:00      
                                 I should've RTFM... :-)            01/01/70 00:00      
                              not too much logic            01/01/70 00:00      
                                 sure            01/01/70 00:00      
                     The horses mouth            01/01/70 00:00      
                        horse is plural            01/01/70 00:00      
                           I'd be happy to ...            01/01/70 00:00      
                              can't find them            01/01/70 00:00      
                                 As you use to say :)            01/01/70 00:00      
         another note            01/01/70 00:00      

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