INT 2F - FINDIRQ.COM - INSTALLATION CHECK                                       
	AX = F400h
Return: AL = 01h if installed
Program: FINDIRQ is a program by Rick Knoblaugh published in the 9/28/93 issue
	  of PCIBM PC Magazine; when run as a TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. it can determine which IRQs are
	  used only when a device is active
SeeAlso: AX=F401h