On Tue, Mar 28, 2000 at 02:41:52PM +0000, Brad Hards wrote:
> Johannes Erdfelt wrote:
> >
> > For those devices which require Firmware to be downloaded before the
> > device works correctly, does the device reset (disconnect/connect) and then
> > show up as a different device?
> >
> > Does it show up as a different Vendor/Product id?
> From reading the code that Bill Paul did for the KLSI ethernet device,
> it looks like the vendor/product ID remains the same, but the revision
> number changes. I think that this is not spec compliant, since the
> descriptors shouldn't change when the device is plugged in - so only
This causes no harm under Windows, since the Win-USB subsystem is state-less,
and has to reread the descriptors each time (better: the individual driver
has to do this...).
> Anchor/Cypress is doing it right, and they have patented the most
> sensible way to do it (device drops the pullup resistor). The only other
<OT>
Sometimes I wonder why the industry still functions with this silly US
patents that are measured in filings/day instead of ingeniousness.
There's absolutely nothing ingenious or patent worthy in this "invention",
I "invented" similar things a long time ago for my HW-designs, but didn't
gave them the names "Re-numeration(TM)"...
> way I can see of doing it is for the host driver to do a port reset or
> to do a quick power down/ power up on the port.
--
Bye
Georg Acher, [EMAIL PROTECTED]
http://www.in.tum.de/~acher/
"Oh no, not again !" The bowl of petunias
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