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???
06/19/03 21:25
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#48860 - RE: Multiplex P0 for I/O and XRAM access
Responding to: ???'s previous message
As to what Joe said, in my first failed attempt, I remember that I tried writing 0x00 or 0xFF to P0 after reading from the tri-stated buffer (74HC244) or writing to the latch (74HC573) to free up the internal bus and it still didn't work.
you MUST make logic to read/write using MOVX

Erik

List of 13 messages in thread
TopicAuthorDate
Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
   RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
   RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
      RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
         RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
   RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
      RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
         RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
      Correction            01/01/70 00:00      
         RE: Correction/K. Klaas            01/01/70 00:00      
            RE: Correction/K. Klaas            01/01/70 00:00      
      RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      
         RE: Multiplex P0 for I/O and XRAM access            01/01/70 00:00      

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