From: Dominik Kubla <dominik.kubla@uni-mainz.de>
To: Pavel Machek <pavel@suse.cz>
Cc: Pete Zaitcev <zaitcev@redhat.com>,
green@linuxhacker.ru, Alan Cox <laughing@shared-source.org>,
linux-kernel@vger.kernel.org
Subject: Re: Linux 2.4.5-ac7
Date: Tue, 5 Jun 2001 17:03:27 +0200 [thread overview]
Message-ID: <20010605170327.A13375@intern.kubla.de> (raw)
In-Reply-To: <mailman.991555081.25242.linux-kernel2news@redhat.com> <200106032051.f53Kpgg10681@devserv.devel.redhat.com> <20010604122708.B33@toy.ucw.cz>
In-Reply-To: <20010604122708.B33@toy.ucw.cz>
On Mon, Jun 04, 2001 at 12:27:11PM +0000, Pavel Machek wrote:
> 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.
And strangely enough a couple of vendors offer USB-to-ISA bridges:
passive ISA backplanes that you can connect to your system using
USB. Just search for "USB ISA" with google.com ...
Dominik
--
A lovely thing to see: Kobayashi Issa
through the paper window's holes (1763-1828)
the galaxy. [taken from: David Brin - Sundiver]
next prev parent reply other threads:[~2001-06-05 15:04 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
2001-06-05 15:03 ` Dominik Kubla [this message]
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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