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  Description:  Set Sample Rate      [PS/2]
 
  Sets the sampling rate of the system's mouse or other pointing device.
 
  Input                                    Output
  ═════════════════════════════            ═══════════════════════════
  AH=C2H                                   If function successful
  AL=02H                                   Carry flag=clear
  BH=sample rate value                     AH=00H
     00H=10 reports per second             If function unsuccessful
     01H=20 reports per second             Carry flag=set
     02H=40 reports per second             AH=status (see Int 15H
     03H=60 reports per second                        Function C2H
     04H=80 reports per second                        Subfunction 00H)
     05H=100 reports per second
     06H=200 reports per second
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