INT 13 - Super PC Kwik - FLUSH CACHE
AH = A1h
SI = 4358h
Note:   PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC Kwik, and thus support this call

See also: 16FFA5CXFFFF

13A1 - Super PC Kwik - FLUSH CACHE