From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 5 Jun 2001 11:04:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 5 Jun 2001 11:04:06 -0400 Received: from sundiver.zdv.Uni-Mainz.DE ([134.93.174.136]:39684 "HELO gateway.intern.kubla.de") by vger.kernel.org with SMTP id ; Tue, 5 Jun 2001 11:03:56 -0400 Date: Tue, 5 Jun 2001 17:03:27 +0200 From: Dominik Kubla To: Pavel Machek Cc: Pete Zaitcev , green@linuxhacker.ru, Alan Cox , linux-kernel@vger.kernel.org Subject: Re: Linux 2.4.5-ac7 Message-ID: <20010605170327.A13375@intern.kubla.de> In-Reply-To: <200106032051.f53Kpgg10681@devserv.devel.redhat.com> <20010604122708.B33@toy.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20010604122708.B33@toy.ucw.cz> User-Agent: Mutt/1.3.18i X-No-Archive: yes Restrict: no-external-archive Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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]