Int 33 Fn 0016  - MS Mouse V6.0+ - Save Driver State                       [M]

   AX = 0016h
   BX = size of buffer (see AX=0015h)
   ES:DX -> buffer for driver state

Note:  although not documented (since the Microsoft driver does not use it),
     many drivers appear to require BX on input

See Also: AX=0015h,AX=0017h