Category: <b>DOS extenders</b>
<br>Flags: Undocumented function, available only in protected mode<p>
<pre><b>INT 21 - Rational Systems DOS/4GW - ???</b>

	AH = FFh
	DH = 0Eh
Return: DX:AX -&gt; XBRK structure (see <a href=../../it/08/5.html>#00508</a> at INT 15/AX=BF02h)
	BX = ???
	CX = ???
SeeAlso: INT 15/AX=BF02h
</pre>