Category: <b>non-traditional input devices</b>
<p>
<pre><b>INT 66 - PenDOS - PKEYUS - GET VERSION</b>

	AH = 40h
Return: CF clear
	AX = 0000h
	BH = major version (02h for version bundled with IBM DOS 6.1)
	BL = minor version (00h for version bundled with IBM DOS 6.1)
	DL = ??? (4Eh)
	DH = ??? (0Eh)
</pre>