Int 16 Fn B0B1  - Vgaram V1.00 - Installation Check                        [m]

   AX = B0B1h
   ES:DI -> 6 byte signature "VGARAM"

Return: AX = B1B0h if installed,
   DS:BX -> VGARAM Status byte: 0 = OFF, 1 = ON
Program: VGARAM is a utility by Brett Warthen which makes VGA memory which is
     not used in text modes available for DOS