Category: <b>hardware</b>
<br>Flags: callout or callback (usually hooked rather than called)<p>
<pre><b>INT 71 - IRQ9 - REDIRECTED TO INT 0A BY BIOS</b>

Notes:	may be masked by setting bit 1 on I/O port A1h
	the default BIOS handler invokes INT 0A for compatibility, since the
	  pin for IRQ2 on the PC expansion bus became the pin for IRQ9 on the
	  AT expansion bus.
	under DESQview, only the INT 15h vector and BASIC segment address (the
	  word at 0000h:0510h) may be assumed to be valid for the handler's
	  process
SeeAlso: INT 0A"IRQ2",INT 59"IRQ9",MEM 0040h:006Bh
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