Mac osX drivers

[perryh at pluto.rain.com]

> I know I keep asking about drivers, but what about Mac drivers? I
> understand that Mac osX is based fairly well on BSD, so would the
> drivers be portable?

Last I heard, MacOs X userland was based on FreeBSD but the MacOS X
kernel was Mach.  The part of a driver that deals with the hardware
might be portable, but it doesn't seem so likely for the part that
deals with the OS.