Int 10 Fn 7F00  - Diamond Stealth 24 - Get S3 Information Block            [V]

   AX = 7F00h
   BX = 4000h

Return: AX = 007Fh if supported
       DX:BX -> DAC set mode routine

See Also: AX=7F00h/BX=4001h,AX=7F00h/BX=4002h,#0656 at INT 1A/AX=B102h