From: Pavel Machek <pavel@suse.cz>
To: Pete Zaitcev <zaitcev@redhat.com>
Cc: green@linuxhacker.ru, Alan Cox <laughing@shared-source.org>,
linux-kernel@vger.kernel.org
Subject: Re: Linux 2.4.5-ac7
Date: Mon, 4 Jun 2001 12:27:11 +0000 [thread overview]
Message-ID: <20010604122708.B33@toy.ucw.cz> (raw)
In-Reply-To: <mailman.991555081.25242.linux-kernel2news@redhat.com> <200106032051.f53Kpgg10681@devserv.devel.redhat.com>
In-Reply-To: <200106032051.f53Kpgg10681@devserv.devel.redhat.com>; from zaitcev@redhat.com on Sun, Jun 03, 2001 at 04:51:42PM -0400
Hi!
> > How about ISA USB host controllers?
>
> Those, unfortunately, do not exist. I was shopping for one
> in vain for a long time. One formiddable difficulty is that
> USB bandwidth is larger than ISA, so the only feasible way
> to make a HC is to have all TD's in its onboard memory,
> as in VGA.
USB is 1.2MB/sec while 8-bit ISA is 4MB/sec (memory-mapped).
...and OHCI does use board memory, anyway.
Pavel
--
Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt,
details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
next prev parent reply other threads:[~2001-06-05 9:28 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.991555081.25242.linux-kernel2news@redhat.com>
2001-06-03 20:51 ` Linux 2.4.5-ac7 Pete Zaitcev
2001-06-04 12:27 ` Pavel Machek [this message]
2001-06-05 15:03 ` Dominik Kubla
2001-06-03 15:49 Wayne.Brown
2001-06-04 20:10 ` Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2001-06-03 12:04 Mikael Pettersson
2001-06-02 23:23 Alan Cox
2001-06-03 7:46 ` Oleg Drokin
2001-06-03 11:19 ` Alan Cox
2001-06-03 12:33 ` Russell King
2001-06-03 14:02 ` Oleg Drokin
2001-06-03 14:45 ` Alan Cox
2001-06-03 14:51 ` Oleg Drokin
2001-06-03 14:54 ` Alan Cox
2001-06-04 1:49 ` lists
2001-06-03 13:59 ` Oleg Drokin
2001-06-04 17:56 ` Tom Rini
2001-06-04 17:59 ` Alan Cox
2001-06-04 18:49 ` Nicolas Pitre
2001-06-03 18:16 ` Philip Blundell
2001-06-03 20:50 ` Tom Rini
2001-06-04 12:37 ` Geert Uytterhoeven
2001-06-04 12:59 ` johan.adolfsson
2001-06-03 14:56 ` Nicolas Pitre
2001-06-03 15:03 ` Alan Cox
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