Well , I found this somewhere logged in my many downloads and thought 
that since it was something about the 68 someone here might be interested 
in it and have a use for it as it may or may not apply to the efforts 
with NetBSD....

For more info on 68K processor modes, see Technote 1094, Virtual
Memory Application Compatibility:

"User vs Supervisor Mode" 
	<http://developer.apple.com/technotes/tn/tn1094b.html#Works6>

"Privileged Instruction Emulation" 
	<http://developer.apple.com/technotes/tn/tn1094b.html#Works7>

Greg Evans
StudioRave Alpha
http://www.sr-alpha.com