Int 1A Fn A0  U - Disk Spool Ii V2.07+ - Installation Check                [c]

   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

See Also: AH=ABh,AH=C0h,AH=D0h,AH=E1h