Int 2F Fn 4653  - F-prot V1.x Only - F-xchk.exe                            [v]

   AX = 4653h
   CX = 0003h
   BX = subfunction
       0000h  installation check

       Return: AX = FFFFh
       0001h  uninstall

       Return: AX,BX,ES destroyed

Note:  F-XCHK is part of the F-PROT virus/trojan protection package by Fridrik
     Skulason

See Also: AX=4653h/CX=0002h,AX=4653h/CX=0004h,AX=CA00h
Index: installation check;F-XCHK|uninstall;F-XCHK