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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]

  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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