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  Interrupt:   10h     Function:   1Ah
 
  Title:       Get or Set Display Combination Code
 
  Description:                                                    [PS/2]
 
     Returns a code describing the installed display adapter(s), or
     updates the ROM BIOS's variable describing the installed
     adapter(s).
 
     Input                                  Output
 
     AH = 1Ah                               If function supported
     AL = Subfunction                         AL = 1Ah
          00h = Get display                 And if called with AL = 00h
                combination code              BH = Inactive display code
          01h = Set display                   BL = Active display code
                combination code
     BH = Inactive display
          code (if AL = 01h)
     BL = Active display
          code (if AL = 01h)
                                    -♦-