If your serial mouse does not work try using kermit
or
tip
to connect to the mouse serial port and verify that it
does indeed generate characters.
The NetBSD pms mouse driver handles PS/2 style mice as
Busmouse. Specify the protocol as ``busmouse'' in the mouse
section of your
XF86Config
file if you're using a PS/2 mouse.
Only standard PS/2 mice are supported by this driver. Newest PS/2 mice that send more than three bytes at a time (especially Intellimouse, or MouseMan+ with a ``3D'' roller) are not supported yet.
See README.mouse for general instruction on mouse configuration in XFree86.