I have installed gentoo on an Ultra-5 sparc, and have
successfully configured Xorg to run at the resolution I
need. But I can't seem to find the correct keyboard or
mouse settings.

The mouse device is /dev/misc/sunmouse, and the keyboard
is a newer Sun keyboard (the ones that more closely resemble
a PC keyboard).

I'd really appreciate if someone could post an example of
how to set up these input devices. Thanks!