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???
02/08/05 17:27
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#86945 - none of them
Responding to: ???'s previous message
the "bible" said:
This is during the execution of a MOVX @DPTR instruction.

OK, this is for MOVX @DPTR. My question #1 was, what about MOVX @Ri.

the "bible" said:
If the external memory cycle is not immediately followed by another external memory cycle, the undisturbed contents of the Port 2 SFR will reappear in the next cycle.

My question #2 was, whether this "reappearance" of Port2 SFR is accompanied by the 2-oscillator strong pullup, or not.

None of these has been addressed here. Maybe somewhere else?

Jan Waclawek


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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