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

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   Message 2,886 of 4,675   
   Frank Kotler to James W Carlock   
   Register names - was Re: BASE64 again   
   20 Jul 17 22:23:05   
   
   From: fbkotler@nospicedham.myfairpoint.net   
      
   James W Carlock wrote:   
      
   ...   
   > How are the registers depicted these days?   
   >   
   > DH   => 8-bit   
   > DL   => 8-bit   
   > DX   => 16-bit   
   > EDX  => 32-bit   
   >   
   > What about the 64-bit registers?   
      
   Hi Jim,   
      
   RDX => 64-bit   
      
   But also...   
      
   RSI => 64-bit   
   ESI => 32-bit   
   SI  => 16-bit   
   SIL => 8-bit !!!   
      
   Their "whitelist"...   
      
   https://software.intel.com/en-us/articles/introduction-to-x64-assembly   
      
   Best,   
   Frank   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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