Category: <b>other operating systems</b>
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<pre><b>INT D4 - PC-MOS/386 v3.0+ - ENTER/LEAVE NATIVE 386 EXECUTION MODE</b>

	AH = 10h
	AL = direction (00h return to V86 mode, 01h enter native mode)
	CX = length in bytes of Native Context Area ( &gt;=1024 )
	DX = segment of Native Context Area
Return: CF clear if successful
	    running in desired mode at instruction following INT D4 call
	    all segment registers converted to appropriate selectors/segments
	CF set on error
	    AX = error code (see <a href=../../it/80/16.html>#01680</a> at INT 21/AH=59h/BX=0000h)
Note:	MS-DOS calls are available in protected mode
SeeAlso: AH=11h,AH=12h,AH=13h,INT 2F/AX=1687h,INT 67/AX=DE0Ch,INT 38
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