Int 2F Fn 9F00  U - Intcfg V2.1 - Installation Check                       [G]

   AX = 9F00h

Return: AX = FFFFh if installed
Program: INTCFG is an optionally-resident control program for INTMON by Celso
     Minnitti, Jr.

See Also: AX=9E00h,AX=9F01h,AX=9F30h,AX=9F49h