Int 2F Fn 1500  - Dos 4.00 Graphics.com - Installation Check               [U]

   AX = 1500h

Return: AX = FFFFh
   ES:DI -> ??? (graphics data?)

Note:  this installation check conflicts with the CD-ROM Extensions
     installation check; moved to AX=AC00h in later versions

See Also: AX=AC00h