Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751603AbXFKLO7 (ORCPT ); Mon, 11 Jun 2007 07:14:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751139AbXFKLOw (ORCPT ); Mon, 11 Jun 2007 07:14:52 -0400 Received: from relay00.pair.com ([209.68.5.9]:1841 "HELO relay00.pair.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751163AbXFKLOv (ORCPT ); Mon, 11 Jun 2007 07:14:51 -0400 X-pair-Authenticated: 81.78.108.18 To: Ondrej Zary Cc: Ralph Corderoy , linux-kernel@vger.kernel.org Subject: Re: How to get an IDE Hard Reset, not a Soft Reset? In-reply-to: <200706091540.19661.linux@rainbow-software.org> References: <20070609131031.CBB5014A521@blake.inputplus.co.uk> <200706091540.19661.linux@rainbow-software.org> Comments: In-reply-to Ondrej Zary message dated "Sat, 09 Jun 2007 15:40:19 +0200." Date: Mon, 11 Jun 2007 11:54:11 +0100 From: Ralph Corderoy Message-Id: <20070611105411.80E0B14A20C@blake.inputplus.co.uk> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1071 Lines: 32 Hi Ondrej, Ondrej Zary wrote: > Ralph Corderoy wrote: > > As I understand it, an IDE hard drive can be reset in three ways. A > > power-on reset, a hard reset caused by pin 1 (RESET-) on the IDE > > connector, and a soft reset (bit SRST in the device control > > register). RESET- is held low on a power on, but can also be used > > later to do a hard reset. > > The RESET pin is often wired to the system RESET signal, so there is > no way to control it separately. Yes, I think you're correct. I found a south bridge spec., http://www.tser.org/vt8231/vt8231.pdf, and I don't see a pin for driving an IDE RESET-. Oh well, I suppose I either dike out RESET- from the IDE cable and wire it up to a serial or parallel port, or give up using a PC for the task and use a dedicated circuit. Thanks for your help. Ralph. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/