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AX = 5DEAh BX = function 00h globally disable V86-mode trapping 01h globally enable V86-mode trapping CL = interrupt to use for trapping 02h get I/O trapping state
Return:
AH = status 00h successful BX = current trapping state (function 02h) 0000h disabled, 0001h enabled CX = interrupt used as trap interrupt (functions 00h and 02h)
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. When I/O trapping is enabled and I/O port access occurs, RM386 simulates an INT instruction for the specified interrupt; the interrupt handler is responsible for decoding the trapped instruction and performing the appropriate action. INT 2C/AX=002Dh provides a similar but more-easily used interface.
See Also: AX=5DEBh - AH=EFh"RM386" - INT 2C/AX=002Dh
Category: Memory Management - Int 67h - R
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