I added a new patch vertical_scaling to dosbox. This patch add the option of Mouse Vertical Scaling, in order to scaling the vertical component of the mouse movement. In the [sdl] section you have the option sensitivityaspect=%value%, which can vary from -1000 to 1000. Its default value is 100. The unit is percentage.

Some dos games as Realm of Arkania 1 will now work, If you set sensitivityaspect to 50.

I uploaded 0.74-0maemo6 to extras-devel.

Have fun!