Int 33 Fn 0042  - Pcmouse - Get Msmouse Storage Requirements               [M]

   AX = 0042h

Return: AX = status
       0000h MSMOUSE not installed
       0042h functions 42h, 50h, and 52h not supported
       FFFFh successful
       BX = buffer size in bytes for functions 50h and 52h

Note:  this function is also supported by the Genius Mouse 9.06 driver

See Also: AX=0015h,AX=0050h,AX=0052h