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   alt.os.development      Operating system development chatter      4,255 messages   

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   Message 3,916 of 4,255   
   wolfgang kern to Robert Pengelly   
   Re: COM1 interrupt for 16-bit OS   
   13 Nov 23 00:55:23   
   
   From: nowhere@never.at   
      
   On 12/11/2023 23:14, Robert Pengelly wrote:   
   ...   
   > Also, how do I scale down a number in assembly?   
      
   SHR 3   ;aka divide by 8   
   SHR 4   ;aka divide by 16   
   both rounds down, but who cares?   
      
   odd divide values can perform with a combination of SHR and MUL or even   
   with the famous awful slow DIV instruction.   
      
   __   
   wolfgang   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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