INT 2F - KAOSHIDE - INSTALLATION CHECK AX = E000h Return: AL = FFh if installed Program: KAOSHIDE ('Hidden Kaos') is a PD joke TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. which randomly capitalizes alphabetic keys, written by Philip Maland. Although not a virusA program which attaches itself to other programs for the purpose of duplicating itself. Viruses often (but not always) contain harmful code which is triggered by some event, after a certain number of reproductions, or on a specific date. See also worm., v2.0 uses some viral-like techniques to hide itself from memory-reports by reducing DOS memory size.