>Reference counting is a big thing.  wrstuden@netbsd.org did a bunch of
>this stuff for network drivers, and it's waiting to be cleaned up and
>integrated...

Okay, I'll bug Bill, then.

>Then you have to deal with "what do you do if a user just rips the card
>out" w/ serial devices, etc... and waiting for detachments from interrupt
>context, etc.  It's a hairy issue, actually.

I can imagine ... what do other OS's do?  I know that Win98 complains
big time if you don't "Stop Card Services" manually.  At least for
a first cut, a hang/panic for a stupid user would be acceptable in
my book :-)

--Ken