Int 11 Fn 7C01  - Rainbowfax V1.3 - Sfengine Api - Set ??? Flag            [F]

   AX = 7C01h

Return: AX = 0001h

See Also: AH=77h,AH=78h,AH=79h,AH=7Ah,AX=7C02h,AX=7C03h