Perry E. Metzger wrote:
> Joerg Sonnenberger <joerg@britannica.bec.de> writes:
>> Many laptops actually have a far superior interface for debugging:
>> firewire.
> 
> I don't own a single laptop with firewire.
> 
> If you can come up with a good way to do debugging over USB, that
> would probably be practical, but I don't know of one at the moment.

Google "EHCI debug port". Not all chipsets support it, but it is what we 
would want to support in that case.

See also: http://www.intel.com/technology/usb/download/ehci-r10.pdf

Jared