Category: <b>DOS extenders</b>
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<pre><b>INT 67 - Virtual Control Program Interface - INSTALLATION CHECK</b>

	AX = DE00h
Return: AH = status
	    00h VCPI is present
		BH = major version number
		BL = minor version number
	    nonzero  VCPI not present
BUG:	MS Windows 3.00 is reported to "object violently" to this call.
SeeAlso: INT 2F/AX=1687h
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