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 AH=80h)
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=81h