Category: <b>serial I/O</b>
<br>Flags: Undocumented function<p>
<pre><b>INT 15 - HP 100LX/200LX - SERIAL INTERFACE SELECT</b>

	AH = 49h
	AL = serial interface
	    00h wired (COM1)
	    01h infrared
Note:	interface should only be changed in deactivated state (see AH=4Ah)
SeeAlso: AH=4Ah"HP"
</pre>