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   comp.sys.apple2      Discussion about Apple II micros      56,720 messages   

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   Message 55,669 of 56,720   
   Anthony Ortiz to All   
   7m skew to phase0   
   04 Aug 22 04:52:43   
   
   From: anthonypaulo@gmail.com   
      
   In the Apple IIe #2 tech notes for DMA, they state the following:   
      
   "...there will be some skew between edges of the 7 M clock and the timing   
   signals from the PAL, such as the edges of 0o or 01. This skew means the 7 M   
   clock edge may rise as much as 20 ns before, or 5 ns after, the 0o falling   
   edge. "   
   Is this skew only at the 0o falling edge? I ask because I'm using the 7m for   
   timing when to read/write.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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