> An interesting observation: the 10/3 kernel gave a transfer rate of about
> 25k/sec whereas the other two I tried yielded about 50k.

Hmmm...  That's more drastic a difference than I'd expect...
So, hackers (not crackers), it looks like there's work to be done,
here.  Make the new SCSI driver as fast as the old--or at least a 
lot closer...  ;-)

> So once I had a copy of /usr/src on MO I wanted to do a mount_union with
> /usr/obj and was told something like 'not supported on this file system'.

Hmmm...  Did you newfs the MO under NetBSD, or use "Mkfs" under the MacOS?

> Am I doing anything wrong here, or is this feature of 4.4BSD not yet
> implemented?

It's implemented.  In fact, a few bugs were fixed in it recently...

> Many, many thanks to you, Allen, for your work on the SCSI driver and for
> getting me going again...

I'm always glad when someone else can benefit from my work.  ;-)  I'm
glad it's working for you.

-allen

-- 
Allen Briggs - end killing - allen.briggs@bev.net ** MacBSD == NetBSD/mac68k **
   Where does all my time go?  <a href="http://www.netbsd.org/">Guess.</a>