INT 1A U - Disk Spool II v2.07+ - INSTALLATION CHECK                            
	AH = A0h
Return: AH = B0h if installed
	    AL = pending INT 1A/AH=D0h subfunction if nonzero???
	    ES = code segment
	    ES:BX -> name of current spool file
	    ES:SI -> current despool file
	    CL = despooler state (00h disabled, 41h enabled)
	    CH = spooler state (00h disabled, 41h enabled)
	    DL = despooler activity
		00h currently active printing a file
		41h standing by
	    DH = 00h ???
	       = 41h ???
	    DI = 0000h ???
		 0001h ???
Program: Disk Spool II is a shareware disk-based print spooler by Budget
	  Software Company
Note:	this function is also supported by Vertisoft's Emulaser utility ELSPL,
	  as that is a licensed version of Disk Spool II
SeeAlso: AH=ABh,AH=C0h,AH=D0h,AH=E1h