I found very useful the advice of Ronald P. Regensburg and adespoton to transfer files to and from Qemu. About my question on the mouse I have now put the speed on fast and is faster but it is not fluid, can not make precise moves.

Hi,
I emulate MacOs 9.2.1, about mouse tomorrow will control the settings.
I'm sorry that can not have a direct communication between Sierra and OS 9.2. Thank you.

I'm a neophyte, I installed Qemu on Mac with Sierra 10.12.5, with some attempts to get it running, I have to solve two problems: the mouse runs slowly in Qemu and I do not know how to create a shared folder from Qemu and the host.
There is a solution to these problems. Thank you.