Subject: Re: gem driver now [kind of] works on G4 macs
To: None <>
From: Matt Thomas <>
List: current-users
Date: 05/10/2002 23:45:15
At 04:10 AM 5/8/2002, wrote:
> >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.
>         just curious: i got a bug report (on openbsd) that basically says
>         "multicast filter is broken on gem driver".  is it working well on
>         netbsd?  i have no hardware to test.

Today, I check in changes to the GEM driver which makes the multicast filter
work and it now properly comes when plugged into a GigE switch.  The GEM
in the SunBlade 100 also negotiates correctly with a NetGear FS108 Hub.
Hopefully, soon I'll be able to make Sun PCI 1000SX card work as well.

At this time, I think macppc should switch to gem and move gm into the

Matt Thomas               Internet:
3am Software Foundry      WWW URL:
Cupertino, CA             Disclaimer: I avow all knowledge of this message