INT 33 U - InfoTrack IMOUSE.COM - UNHOOK MOUSE IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated.
	AX = 8800h
	BX <> FFFFh
Note:	the code is written to expect a subfunction number in AL, but only
	  function 00h has been implemented
SeeAlso: AX=8800h/BX=FFFFh