Int 60  u - Hp 95lx System Manager - Get Default Drive                     [b]

   DI = 0513h
   STACK:  2 WORDs unused dummies (for calls from high level languages)
       DWORD   pointer to ??? buffer for current drive

Return: ???
   STACK unchanged

See Also: INT 21/AH=19h,INT 60/DI=0514h