Int 13 Fn 2E  u - Quickcache Ii V4.20 - Set Flush Count                    [c]

   AH = 2Eh
   BX = flush count

Return: AX = status (0000h successful)
Desc:  specify how many dirty sectors the cache should write after each flush
     interval (see AH=25h) when buffered writes are enabled

See Also: AH=21h,AH=25h,AH=2Ch