From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 22 Sep 2001 12:28:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 22 Sep 2001 12:28:20 -0400 Received: from server1200.net ([209.239.42.69]:23558 "EHLO server1200.net") by vger.kernel.org with ESMTP id ; Sat, 22 Sep 2001 12:28:09 -0400 Date: Sat, 22 Sep 2001 12:33:24 -0400 From: "Ian D . Stewart" To: Stephen Torri Cc: "D . Stimits" , Linux Kernel Subject: Re: Serial Ports Message-ID: <20010922123324.A4677@localhost.ameritech.net> In-Reply-To: <3B96C783.8BC8E29B@idcomm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT In-Reply-To: ; from storri@ameritech.net on Thu, Sep 06, 2001 at 16:27:06 -0400 X-Mailer: Balsa 1.1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 2001.09.06 16:27:06 -0400 Stephen Torri wrote: > > I have noticed that serial ports change IRQ to either 3 or 4. There is no > reason for this behavior. I have created a perl script to create a log > containing the irqs assigned and their ioports. Is there anything else I > could log that might unmask the problem? > > So far if the serials are assigned to IRQ 4 then the sync with the palm > pilot doesn't work (/dev/pilot = /dev/ttyS0). If its IRQ 3 then it does. As I understand it, /dev/ttyS0-3 are set to industry standard values on startup (they are not probed). The values can be changed using the command-line utility setserial. You can specify non-standard values in an rc.serial conf file which will be read on startup. The setserial manpage covers this is some detail. HTH, Ian -- "God may have mercy. We will not." --Senator John S. McCain (R-AZ)