I have a zs driver ready to try out, but I can't seem to get through
the cdevsw to the driver open routine.  Assuming I created the device
node with the wrong major number, I went looking for the cdevsw array
but I could not find it!  Where is it?

Also, when I fork a couple of commands (i.e. /bin/ls)
the child process termination is followed by a message:
	pmap: removing wired pmeg
after which the single user shell is unresponsive.
Tty input still echos but it looks like the shell is dead.

Any ideas?
Gordon

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