Int 13 Fn 41  U - Quickcache Ii V4.20 - Save/restore ???                   [c]

   AH = 41h
   AL = direction
       01h save to file
       else restore from file
   ES:DI -> 1024-byte buffer for ???

Return: AX = status (0000h successful, 8000h failed)
Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
     Associates, Inc.