Today I got the gem MI driver to work on a 733 MHz G4 "Quicksilver"
Macintosh.  I also plugged it in a GigE switch and got it to talk to an
Alpha XP1000 over 1000baseT.  After a few tweaks and enhancements to
the gem driver, I got the Mac to send at 355Mb/s to the XP1000 and
receive at 280Mb/s.  This is without support for hardware checksumming,
large packets, or page loans on sends.

The major bug left is a problem with autosensing.  For some reason, the
gem driver doesn't autosense the currently media properly.  To workaround
it, try setting the media to a specific speed, wait a second or two, and
then back to autosense.  At time point you may need to toggle gem down
and up.

-- 
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt/
Cupertino, CA             Disclaimer: I avow all knowledge of this message