[openbeos] Re: Version of USB
- From: "Michael Phipps" <mphipps1@xxxxxxxxxxxxxxxx>
- To: openbeos@xxxxxxxxxxxxx
- Date: Sun, 20 Jan 2002 21:50:30 -0500
>> Kind of. I would *like* to support 2.0. It all depends on
>> a) getting the hardware
>
>That's kind of easy. Just go to a local shop.
Maybe for you rich California engineers. :-) :-) :-)
I live in a place where plumbers make more than Software Engineers. :-)
Plus, IMHO, support means more than buying one device and one motherboard/PCI
card. :-)
>> b) getting support, etc
>> c) getting documentation
>
>That's also easy. EHCI is no longer classified as confidential information
>by
>Intel. Go to: http://www.intel.com/technology/usb/download/ehci-r096.pdf
>For the USB 2.0 spec itself: http://www.usb.org/developers/docs.html
That is cool. I wonder how many other chipset makers supply that info.
>> d) how drastically much harder it is that 1.1
>> e) if 2.0 code wouldn't work with 1.1 devices.
>
>A proper bus manager implementation should be able to handle
>both USB1.x busses and USB 2.x busses. However you need
>3 different bus implementations: UHCI, OHCI & EHCI.
Thanks!
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