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???
09/06/06 19:31
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#123780 - Spaces...
Responding to: ???'s previous message
Andy Peters said:
This signal nomenclature is a vestige of old x86 designs. Those processors have two "spaces," a memory space and an I/O space.

Don't forget - the 8051 has two external memory spaces - CODE and XDATA...

... simply connect the micro's RD output to IOR and the WR output to IOW.

Not quite so simple - rmember there's two external address spaces...



List of 22 messages in thread
TopicAuthorDate
/R & /W OR /IOR & /IOW            01/01/70 00:00      
   Oops            01/01/70 00:00      
      Make preview compulsory?            01/01/70 00:00      
   IIRC            01/01/70 00:00      
      Thanx Neil            01/01/70 00:00      
         Reading time            01/01/70 00:00      
   IOW\ and IOR\            01/01/70 00:00      
      Spaces...            01/01/70 00:00      
         It has a few more ... and what\'s with the \\?            01/01/70 00:00      
            Too many Andies...            01/01/70 00:00      
            As Sun Ra said,            01/01/70 00:00      
               and I thought I was the only one            01/01/70 00:00      
                  Whats this            01/01/70 00:00      
                     need to be specific            01/01/70 00:00      
                     Improper?            01/01/70 00:00      
                     go back and read ...            01/01/70 00:00      
                        and also read...            01/01/70 00:00      
      What I understood ?            01/01/70 00:00      
         No.            01/01/70 00:00      
            You mean Yes?!            01/01/70 00:00      
               which is why            01/01/70 00:00      
   THANKX everybody            01/01/70 00:00      

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