Re: DM9601

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Try this
http://cgi.ebay.com/Linksys-Compact-USB-2-0-10-100-Network-Adapter-/280537583365?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item415157cf05


On Fri, 2010-07-23 at 16:33 -0500, Bob Tracy wrote:
> On Fri, Jul 23, 2010 at 04:50:32PM -0400, Charlie Brady wrote:
> > 
> > On Fri, 23 Jul 2010, Bob Tracy wrote:
> > 
> > > On Fri, Jul 23, 2010 at 10:07:09AM +0200, Pascal Hambourg wrote:
> > > > Bob Tracy a ?crit :
> > > > >>(Issues with a DM9601 USB 1.1 10/100 Ethernet adapter.)
> > 
> > Do you have design docs for the advice? If not (and even if you do) is it 
> > worth the time and effort to fix the driver?
> > 
> > How can USB 1.1 support 100MB?
> 
> I suppose the same way old 16-bit PCMCIA cards do: rely on flow-control
> to throttle-back.  You can't get 100% of 100 Mb operation, but you can
> definitely get better throughput than with a 10 Mb connection.
> 
> As to the question of whether a driver fix is worth the trouble, I guess
> that depends on whether one ends up relying on the device for whatever
> reason.  Case in point: I needed a wired interface different from the
> 1 Gb built-in interface on my Dell D630, because the built-in interface
> absolutely refuses to function properly when hooked up to at least one
> 10 Mb network where the infrastructure cabling is CAT 3.  So far, all the
> 10/100 NICs to which I have access have no difficulty using the 10 Mb
> network mentioned: the problem seems limited to specific gigabit NICs.
> 
> Pure speculation on my part, but I'm guessing most users are hesitant to
> report problems with cheap hardware because they *expect* problems and
> assume the hardware is to blame.  Normally, that's a good assumption.
> Fortunately (?), I always question it because we tend not to be
> surprised/impressed if an inexpensive product actually does what its
> manufacturer claims.  Why not assume the hardware is innocent until
> proven guilty? :-)
> 
> So, yeah...  For me, a fixed Linux driver would be nice to have because
> the device functions reliably with WinXP (albeit with a reduced MTU).
> As for availability of the design docs, yes, they're available: try
> 
> http://www.meworks.net/userfile/24247/DM9601-DS-P03-102908.pdf
> 
> The manufacturer's web site is http://www.davicom.com.tw.  The Linux 2.6
> driver available there is based on early 2.6 kernels, i.e., pre-usbnet,
> and no netdev_ops and friends.  It has at least one useful feature that
> didn't make it into the mainstream driver: hard-setting 10/100 half/full
> duplex mode vs. auto-sensing.
> 
> --Bob
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