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   comp.lang.asm.x86      Ahh, the lost art of x86 assembly      4,675 messages   

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   Message 3,836 of 4,675   
   James Harris to All   
   Accessing addresses which have no RAM   
   05 Apr 19 19:41:13   
   
   From: james.harris.1@nospicedham.gmail.com   
      
   Does anyone here know what would likely happen to cache lines and buses   
   if one were to read addresses which had no RAM - with or without caching   
   enabled for those addresses? Ditto writing such addresses? Would the   
   reads/writes cause problems? What value would be read? All zeroes? All   
   ones?   
      
   And would such operations be slower than accessing real RAM? I guess not   
   but I don't know. Accessing non-existent RAM is not something one gets   
   to do too often!   
      
   --   
   James Harris   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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