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???
01/21/08 06:32
Modified:
  01/21/08 06:32
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 		 #149795 - False ... SFR space is more of an I/O space
Responding to: ???'s previous message
While there are no specific 805x I/O instructions, access to SFR space is essentially to I/O, in that on-chip I/O is accessible only through SFR space.

Off-chip I/O has to be accessed as memory-mapped I/O via the external memory bus.

RE


List of 37 messages in thread
TopicAuthorDate
True or False?            01/01/70 00:00      
   False.            01/01/70 00:00      
      I mean..            01/01/70 00:00      
         Definitely False!            01/01/70 00:00      
   Yes , but has a fixed and fifferent location            01/01/70 00:00      
      Wrong            01/01/70 00:00      
         Wrong - gnorW            01/01/70 00:00      
            No, that is not helpful.            01/01/70 00:00      
               Twist of words            01/01/70 00:00      
                  Exactly - and the answer is, "False"!            01/01/70 00:00      
                     Come on guys...            01/01/70 00:00      
                        Ok I Quit            01/01/70 00:00      
   Some of SFRs could be treated like RAM cells...            01/01/70 00:00      
      Dodgy tricks            01/01/70 00:00      
         Of course!!            01/01/70 00:00      
   False ... SFR space is more of an I/O space            01/01/70 00:00      
      FSRs could be described as            01/01/70 00:00      
         Not sure how it would help here, though            01/01/70 00:00      
            well,            01/01/70 00:00      
               NOT            01/01/70 00:00      
         perhaps a sparsely populated bank ...            01/01/70 00:00      
            The 8048            01/01/70 00:00      
               a reasonable Idea in hindsight            01/01/70 00:00      
                  SFR paging            01/01/70 00:00      
                     examples?            01/01/70 00:00      
                        SFRs mapped to Xdata exist(ed)            01/01/70 00:00      
                        Some examples            01/01/70 00:00      
                        Triscend did            01/01/70 00:00      
                           Richard did            01/01/70 00:00      
               I would not be so sure.            01/01/70 00:00      
                  From What I read            01/01/70 00:00      
                     careful now!            01/01/70 00:00      
   maybe...            01/01/70 00:00      
      looks like he's just lost interest            01/01/70 00:00      
         This Thread should be locked or closed            01/01/70 00:00      
            But you did!!!!            01/01/70 00:00      
         ...it's false!            01/01/70 00:00      

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