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  Interrupt:   15h     Function:   C2h     Subfunction:   06h
 
  Title:       Set Scaling or Get Status
 
  Description:                                                    [PS/2]
 
     Returns the current status of the system's mouse or other pointing
     device or sets the device's scaling factor.
 
     Input                              Output
 
     AH = C2h                            If function successful
     AL = 06h                              Carry flag: clear
     BH = Extended command                 AH = 00h
          00h = Return device status     And if called with BH = 00h
          01h = Set scaling at 1:1         BL = Status byte
          02h = Set scaling at 2:1
                                                Bits   Significance
 
                                                0     = 1 if right button
                                                        pressed
                                                1     = Reserved
                                                2     = 1 if left button
                                                        pressed
                                                3     = Reserved
                                                4     = 0 if 1:1 scaling
                                                      = 1 if 2:1 scaling
                                                5     = 0 if device
                                                        disabled
                                                      = 1 if device
                                                        enabled
                                                6     = 0 if stream mode
                                                      = 1 if remote mode
                                                7     = Reserved
 
                                           CL = Resolution
                                                00h = 1 count per
                                                      millimeter
                                                01h = 2 counts per
                                                      millimeter
                                                02h = 4 counts per
                                                      millimeter
                                                03h = 8 counts per
                                                      millimeter
                                           DL = Sample rate
                                                0AH = 10 reports
                                                      per second
                                                14h = 20 reports
                                                      per second
                                                28h = 40 reports
                                                      per second
                                                3CH = 60 reports
                                                      per second
                                                50h = 80 reports
                                                      per second
                                                64h = 100 reports
                                                      per second
                                                C8h = 200 reports
                                                      per second
 
                                          If function unsuccessful
                                            Carry flag: set
                                            AH = Status
                                                 See: Int 15h Function C2h
                                                      Subfunction 00h
                                    -♦-