From: notsaying@nospicedham.127.0.0.1   
      
   On Wed, 30 Dec 2020 19:58:19 GMT, "Kerr-Mudd,John"   
    wrote:   
      
   > On Wed, 30 Dec 2020 18:12:37 GMT, Terje Mathisen   
   >  wrote:   
      
   []   
      
   >> for CMP AL,0? I.e. is there a one-byte form of CMP AL with a one-byte   
   >> immediate?   
   >>   
   >> Terje   
   >   
   > Hugi tips & tricks snippet:   
   >   
   >   
   >  1. Test the value in AL   
   >   
   >  To test whether AL is 0 or 1, one single-byte instruction is enough:   
   >   
   >         aaa   
   >         jz      @zero   
   >   
   >   
   > I'm not claiming it's faster than "test".   
   >   
      
   Oops; also jumps if AL is 0x0A   
      
      
      
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