I now have a working DEC EtherWORKS III driver for NetBSD.  It uses the
bus_* stuff and should be MI.  I've only created an ISA attachment for 
now.  (I'll do the EISA one in a day or two).  It seems to run fine under
NetBSD/i386 1.2D.  It should work under NetBSD/alpha (that's the point
of MI drivers).  However, my NetBSD/alpha machine only has a TurboChannel
so I can't test it.

The driver is at http://www.3am-software.com/lc-970612.tar.gz and should
be untarred into your src tree.  lc.diffs contains a patch for 
sys/conf/files and sys/dev/isa/files.isa.  It also has a sample 
config line at the front.

The card/driver is not that speedy (5Mb/s in PIO mode, 7Mb/s in shared
memory mode) but then the EWRKS III has never been that fast.  The driver
supports multicast (of course) and bpfilter (of course).

Give it a shot and let me know the results...
-- 
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt.html
Westford, MA              Disclaimer: I disavow all knowledge of this message