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  Interrupt:   10h     Function:   12h     Subfunction:   32h
 
  Title:       Enable/Disable Video
 
  Description:                                              [MCGA] [VGA]
 
     Enables or disables CPU access to the video adapter's I/O ports
     and video refresh buffer.
 
     Input                          Output
 
     AH = 12h                       If function supported
     AL = 00h to enable access        AL = 12h
        = 01h to disable access
     BL = 32h
                                    -♦-