Category: virus/antivirus
INT 21 - F-DRIVER.SYS v1.14+ - GRAB INT 21 AX = 4BEEh Return: AX = status 1234h grab was successful 2345h failed (INT 21 grabbed previously) Program: F-DRIVER.SYS is part of the shareware F-PROT virus/trojan protection package by Fridrik Skulason Note: when called the first time, this function moves the INT 21 monitoring code from its original location in the INT 21 chain to be the first thing called by INT 21. This is the mechanism used by F-NET. SeeAlso: INT 2F/AX=4653h/CX=0002h,INT 2F/AX=4653h/CX=0007h