INT 2F - F-PROT v1.x only - F-XCHK.EXE
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
SeeAlso: AX=4653h/CX=0004h,AX=CA00h

See also: 2F4653

2F4653CX0003 - F-PROT v1.x only - F-XCHK.EXE