INT 15 - OS HOOK - PROGRAM TERMINATION AH = 82h BX = process ID CF clear Return: CF clear if successful AH = 00h CF set on error AH = status (see #00496) Notes: closes all devices opened by the given process ID with function 80h this function should be hooked by a multitasker which wishes to keep track of device ownership; the default BIOS handler merely returns successfully SeeAlso: AH=80h,AH=81h