From owner-freebsd-hardware Mon Oct 12 13:08:39 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA29428 for freebsd-hardware-outgoing; Mon, 12 Oct 1998 13:08:39 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from caladan.tdx.co.uk (caladan.tdx.co.uk [195.188.177.4]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA29418 for ; Mon, 12 Oct 1998 13:08:36 -0700 (PDT) (envelope-from kpielorz@tdx.co.uk) Received: from localhost (kpielorz@localhost) by caladan.tdx.co.uk (8.9.1a/8.9.1) with ESMTP id VAA15291; Mon, 12 Oct 1998 21:08:18 +0100 (BST) Date: Mon, 12 Oct 1998 21:08:18 +0100 (BST) From: Karl Pielorz To: Jim Shankland cc: hardware@FreeBSD.ORG Subject: Re: ATX boards and restart after power failure In-Reply-To: <199810121950.MAA15990@biggusdiskus.flyingfox.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Mon, 12 Oct 1998, Jim Shankland wrote: > We have been building systems based on the Tyan S1572 motherboard > (ATX form factor, TX chipset). It turns out that when there's a > power failure, these systems stay down when power returns until > a human or other mammal presses the soft power-on button on the > front. ;-) Mammal... Why don't you get your FreeBSD daemon to do it? (Here Chuck... Chuck? ) > * Somebody (I think on this list) actually made a hardware mod > to their boxes to simulate "mammal pushed soft-power-on button" > when power came up. If that person or anyone else has any thoughts > on how to go about this, I'd like to hear them. You should be able to build a simple RC (i.e. resistor/capictor) switch to bring the machine up when mains returns (similar to the one that provides the RESET signal for CPU's in systems until the PSU has stabalised... If no other helpful soul dives in and sends you ASCII art of an RC network let me know, I'll dig/draw one up... Regards, Karl Pielorz To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message