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

	AH = 4Ah
	AL = control
	    00h deactivate
	    01h activate
Note:	interface selected with AH=49h will be (de)activated
SeeAlso: AH=49h"HP",AH=4Bh"HP"
</pre>