Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
Int 15h Function C2h Subfunction 03h
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  Interrupt:   15h     Function:   C2h     Subfunction:   03h
 
  Title:       Set Resolution
 
  Description:                                                    [PS/2]
 
     Sets the resolution of the system's mouse or other pointing
     device. The default resolution is 4 counts per millimeter after
     a reset operation (Int 15h Function C2h Subfunction 01h).
 
     Input                                  Output
 
     AH = C2h                               If function successful
     AL = 03h                                 Carry flag: clear
     BH = Resolution value                    AH = 00h
          00h = 1 count per millimeter
          01h = 2 counts per millimeter     If function unsuccessful
          02h = 4 counts per millimeter       Carry flag: set
          03h = 8 counts per millimeter       AH = Status
                                                   See: Int 15h Function C2h
                                                        Subfunction 00h
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