Int 13 Fn 81  - Super Pc-kwik V3.20+ - ???                                 [c]

   AH = 81h
   SI = 4358h
   ???

Return: ???

Note:  PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
     Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds
     to PC-Kwik v3.20 and PC-Cache v5.5 to PC-Kwik v3.27)
   returns immediately in PC-Cache v5.x
Index: PC-Cache|Qualitas Qcache