Category: <b>disk I/O enhancements</b>
<br>Flags: Undocumented function<p>
<pre><b>INT 16 - PC Tools v9 DSKLIGHT - INSTALLATION CHECK</b>

	AX = FFA3h
	BX = FFA3h
	CX = FFA3h
Return: BX = CX = 5555h if installed
	    AX = resident code segment
Program: DSKLIGHT is a TSR included with PC Tools v9+ which displays a disk-
	  access indicator on the screen; in v7 and v8, this function was
	  provided by DATAMON
Note:	DSKLIGHT chains to the previous handler if BX or CX is not FFA3h
</pre>