Int 33 Fn 0010  - MS Mouse V1.0+ - Define Screen Region For Updating       [M]

   AX = 0010h
   CX,DX = X,Y coordinates of upper left corner
   SI,DI = X,Y coordinates of lower right corner

Note:  mouse cursor is hidden in the specified region, and needs to be
     explicitly turned on again

See Also: AX=0001h,AX=0002h,AX=0007h,AX=0010h"Genius MOUSE",AX=0031h