"John Navas" <spamfilter0@navasgroup.com> wrote in message
news:js6ol29lpvlog18u2m0vgjruf93bjjg4dp@4ax.com...
> On Wed, 15 Nov 2006 20:06:13 -0800, Jeff Liebermann
> <jeffl@comix.santa-cruz.ca.us> wrote in
> <v4onl25bho7sg2sbp1bledjnmf3h20lvsf@4ax.com>:
>
>>John Navas <spamfilter0@navasgroup.com> hath wroth:
>>
>>>Only if the implementation is badly broken. USB has supported multiple
>>>devices per port from the get-go.
>>
>>Yep. The problem is that I kept running into old hardware where the
>>supplied drivers would only support one device per port. The docs
>>accompanying the device warned that with a USB 1.0, only one USB
>>device could be "used" at a time. This was on an old Acer desktop and
>>printer. I don't recall the model numbers. When I plugged in another
>>USB device into a USB hub plugged into the one port, the printer port
>>hung. I've seen other such warnings about USB 1.0.
>>
>>However, you're correct. I thought it was something inherent in the
>>USB 1.0 port. Apparently it's something in the device driver.
>
> It could also be something in the hardware. Not only was early hardware
> pretty bad on its own, but also the 1.0 spec suffered from a number of
> problems, particularly in the area of hubs. A big part of 1.1 was
> fixing problems found in 1.0.

What I've read (somewhere, can't now recall the source) is that USB 1.1 was
merely a "clarification" of the 1.0 spec, not an actual change. That isn't
correct?

Neil