Category: <b>debuggers/debugging tools</b>
<p>
<pre><b>INT 2F - HEART.COM - INSTALLATION CHECK</b>

	AX = D600h
Return: AX = 0303h (two hearts) if installed
	    ES:DI -&gt; buffer (see <a href=../../it/88/30.html>#03088</a>)
Program: HEART.COM is a CPU lock-up/critical indicator utility by Mitch Davis.
Notes:	Once the host program has identified the address of the data area, it
	  can change this to indicate safe/critical, alternate colours, etc.
	The entries for the color table are in char/attrib form.  Every two
	  entries form a pair which is alternated between 68 times a minute.
	  The first half of the table is for color videos, the second mono.
	  Within each half, the first half is for the safe chars, and the
	  second for the critical chars.

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