Category: <b>BIOS</b>
<br>Flags: callout or callback (usually hooked rather than called)<p>
<pre><b>INT 4A - SYSTEM - USER ALARM HANDLER</b>

Desc:	This interrupt is invoked by the BIOS when a real-time clock alarm
	  occurs; an application may use it to perform an action at a
	  predetermined time.
Note:	this interrupt is called from within a hardware interrupt handler,
	  so all usual precautions against reentering DOS must be taken
SeeAlso: INT 1A/AH=06h
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