cvs commit: src/sys/dev/usb umass.c

Nate Lawson nate at
Wed Mar 26 21:57:35 PST 2003

On Wed, 26 Mar 2003, Bill Paul wrote:
> > THE USB200M is a USB 2.0 device, which seems to be using an
> > ASIX Electronics AX88172. The datasheet for this chip is at:
> > 
> >

Nice trick with strings!  Let's hope they don't try to stop this practice
as the Windows user never sees them and it really helps us.
> > The only problem with this chip is that I don't think FreeBSD supports
> > any USB 2.0 controllers yet. Am I wrong? It's sort of pointless to wish
> > for support for a USB 2.0 device if we don't even have a USB 2.0 stack.
> Ok, minus 10 points for me for not realizing that USB 2.0 devices
> were backward compatible with USB 1.x controllers/hubs. ASIX appears
> to have a USB 1.x version of this chip as well (Ax88170) with the
> same programming API.

Yes, I bought a USB200M for $20 with the hopes of it working as a USB 1.x
device for now and then suddenly getting faster once our 2.0 support is
done.  Bernd Walter (ticso@) is working on 2.0 support.
> Of course, I don't actually have any of these pieces of hardware myself.
> I guess I could stop by CompUSA on the way home tonight...
> Now look what you went and started.

Hehe.  CompUSA is full of tons of these things, all not supported.  I gave
up and spent the $40 for a USB100TX because I don't have time to work on
the driver right now.  I'll make you a deal:  if you continue to work on
the ethernet drivers, I'll work on some more CAM patches.  :)


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