Int 2F Fn CC  U - PC-kwik Programs - API                                   [c]

   AH = CCh
   SI = 5453h or 7473h
   AL = function number (at least 00h,01h,04h,05h,07h,80h)
   DL = program identifier
       00h all installed PowerPak programs
       01h SUPERPCK/SUPER/QCACHE v4.00+ (disk cache)
       02h PCKSPL (print spooler)
       04h PCKSCRN (screen accelerator)
       05h PCKKEY (keyboard enhancer)
       06h PCKRAMD (RAM disk)
       08h PCKWIK.SYS
       10h PCKCDROM (CD-ROM support for SUPERPCK)

Return: SI = 7473h
   other registers vary by function

Note:  Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
     thus supports this call

See Also: INT 21/AH=2Bh/CX=4358h