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675DEB

Category: memory management

INT 67 - RM386 - V86-MODE I/O TRAPPING PORT CONTROL

	AX = 5DEBh
	BX = function
	    00h disable V86-mode trapping for specified port
	    01h enable V86-mode trapping for specified port
	    02h get V86-mode trapping state for specified port
	DX = port for which to enable/disable/query trapping
Return: AH = status
	    00h successful
		BX = current trapping state (00h off, 01h on) (function 02)
	    A7h invalid port ID
	    A8h reserved port--cannot trap/untrap (DMA/INT/KBD controllers)
Notes:	RM386 traps this function on the initial transition to protected
	  mode caused by the INT instruction, which means it can not be
	  overridden simply by hooking the interrupt
SeeAlso: AX=5DEAh

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