From: lucio@proxima.alt.za
To: 9fans@cse.psu.edu
Subject: Re: [9fans] TODO lists for Plan 9
Date: Fri, 9 Jul 2004 12:34:20 +0200 [thread overview]
Message-ID: <56cf6b7b6176d2a7d381d7d8d91e1896@proxima.alt.za> (raw)
In-Reply-To: <1afc3ca5d80c7130d54cdd41d9805836@collyer.net>
> I think OHCI and UHCI were competing USB 1 interfaces. One was from
> Intel and appears on lots of motherboards; I'm guessing that that's
> UHCI, since that's what Plan 9 currently supports. EHCI must be the
> USB 2 interface I was thinking of.
I'm sure there are others whose knowledge is greater than mine, but
they must be asleep as no one has shouted at me yet :-)
I have both UHCI and OHCI specs (and EHCI, believe or not). I haven't
yet been able to read both (either, really, I only superficially read
the UHCI one) and so I don't know how they differ: Universal (Intel)
and Open (Compaq, of all names, but all USB designers at the time seem
to have had a hand in this one). I have a feeling that OHCI has
superseded UHCI in practice, possibly because of its appearance in all
EHCI implementations. But I'm guessing and my experience is not very
broad.
As for EHCI, by volume the specification does not seem much greater
than OHCI, but I'm sure there lurks some serious complication
somewhere in its innards.
++L
next prev parent reply other threads:[~2004-07-09 10:34 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-06 8:11 YAMANASHI Takeshi
2004-07-06 11:21 ` bituman
2004-07-06 11:52 ` gabriel diaz
2004-07-06 12:14 ` Matthias Teege
2004-07-06 12:23 ` lucio
2004-07-06 12:33 ` boyd, rounin
2004-07-06 15:20 ` matt
2004-07-06 15:20 ` Gorka Guardiola Múzquiz
2004-07-07 9:11 ` Dave Lukes
2004-07-07 10:57 ` matt
2004-07-07 16:22 ` Dave Lukes
2004-07-07 16:58 ` jmk
2004-07-08 10:12 ` Gorka Guardiola Múzquiz
2004-07-08 11:35 ` boyd, rounin
2004-07-07 21:49 ` matt
2004-07-07 21:53 ` Charles Forsyth
2004-07-08 2:40 ` Kenji Okamoto
2004-07-07 22:12 ` andrey mirtchovski
2004-07-07 23:01 ` Jack Johnson
2004-07-07 23:12 ` andrey mirtchovski
2004-07-07 23:25 ` andrey mirtchovski
2004-07-07 23:54 ` jmk
2004-07-08 7:01 ` Fco. J. Ballesteros
2004-07-08 7:28 ` lucio
2004-07-08 23:26 ` vdharani
2004-07-08 18:25 ` Gorka Guardiola Múzquiz
2004-07-08 23:43 ` vdharani
2004-07-08 18:43 ` Gorka Guardiola Múzquiz
2004-07-08 18:34 ` Sape Mullender
2004-07-09 5:19 ` lucio
2004-07-09 5:48 ` Geoff Collyer
2004-07-09 6:05 ` lucio
2004-07-09 9:15 ` Geoff Collyer
2004-07-09 9:25 ` lucio
2004-07-09 10:11 ` Geoff Collyer
2004-07-09 10:26 ` [9fans] A Discipline of Programming lucio
2004-07-09 16:11 ` Jack Johnson
2004-07-09 10:34 ` lucio [this message]
2004-07-09 11:19 ` [9fans] TODO lists for Plan 9 Nigel Roles
2004-07-09 22:51 ` Charles Forsyth
2004-07-09 12:46 ` ron minnich
2004-07-09 16:57 ` Jack Johnson
2004-07-09 20:39 ` ron minnich
2004-07-09 20:43 ` boyd, rounin
2004-07-09 20:49 ` ron minnich
2004-07-09 20:52 ` boyd, rounin
2004-07-12 12:10 ` OT: " Dave Lukes
2004-07-12 14:34 ` ron minnich
2004-07-09 20:51 ` Jack Johnson
2004-07-09 20:54 ` boyd, rounin
2004-07-09 21:03 ` Axel Belinfante
2004-07-10 0:30 ` Dan Cross
2004-07-10 2:23 ` vdharani
2004-07-09 21:42 ` Jason Gurtz
2004-07-09 20:52 ` andrey mirtchovski
2004-07-09 20:54 ` boyd, rounin
2004-07-11 14:04 ` matt
2004-07-09 21:52 ` Nigel Roles
2004-07-10 2:30 ` vdharani
2004-07-09 12:45 ` ron minnich
2004-07-09 8:45 ` Fco. J. Ballesteros
2004-07-09 9:09 ` Kenji Okamoto
2004-07-09 9:12 ` Gorka Guardiola Múzquiz
2004-07-09 10:01 ` Fco. J. Ballesteros
2004-07-09 11:16 ` boyd, rounin
2004-07-09 16:45 ` Skip Tavakkolian
2004-07-09 9:30 ` lucio
2004-07-09 9:59 ` Fco. J. Ballesteros
2004-07-10 2:43 ` vdharani
2004-07-09 22:41 ` Charles Forsyth
2004-07-09 22:43 ` Charles Forsyth
2004-07-10 4:25 ` ron minnich
2004-07-06 15:39 ` ron minnich
2004-07-06 15:41 ` boyd, rounin
2004-07-06 15:44 ` ron minnich
2004-07-06 16:19 ` C H Forsyth
2004-07-07 5:46 ` lucio
2004-07-07 10:56 ` Bruce Ellis
2004-07-07 17:56 ` C H Forsyth
2004-07-07 18:09 ` Fco. J. Ballesteros
2004-07-07 18:59 ` andrey mirtchovski
2004-07-07 23:30 ` Bruce Ellis
2004-07-08 7:16 ` lucio
2004-07-07 21:30 ` Nicholas Waples
2004-07-06 13:14 ` andrey mirtchovski
-- strict thread matches above, loose matches on Subject: below --
2004-07-08 18:34 Brantley Coile
2004-07-06 7:26 Kenji Okamoto
2004-07-06 8:02 ` Matthias Teege
2004-07-06 8:11 ` Kenji Okamoto
2004-07-06 8:19 ` lucio
2004-07-06 10:57 ` Steve Simon
2004-07-06 11:08 ` Boris Maryshev
2004-07-06 12:15 ` Dave Lukes
2004-07-06 12:25 ` lucio
2004-07-07 1:26 ` Kenji Okamoto
2004-07-06 12:33 ` Noah Evans
2004-07-07 0:54 ` Kenji Okamoto
2004-07-07 4:03 ` Noah Evans
2004-07-07 4:43 ` Kenji Okamoto
2004-07-07 7:15 ` Noah Evans
2004-07-06 13:16 ` Dave Lukes
2004-07-06 14:01 ` lucio
2004-07-07 1:03 ` Kenji Okamoto
2004-07-07 1:14 ` boyd, rounin
2004-07-07 1:27 ` boyd, rounin
2004-07-13 5:42 ` Kenji Okamoto
2004-07-13 5:50 ` Skip Tavakkolian
2004-07-13 5:58 ` Kenji Okamoto
2004-07-13 9:04 ` Charles Forsyth
2004-07-13 5:55 ` Kenji Okamoto
2004-07-13 8:56 ` Dave Lukes
2004-07-13 9:16 ` Kenji Okamoto
2004-07-15 0:56 ` Kenji Okamoto
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