From owner-freebsd-hackers Mon Jun 19 11:15: 8 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from mout0.freenet.de (mout0.freenet.de [194.97.50.131]) by hub.freebsd.org (Postfix) with ESMTP id 4D54437B84C; Mon, 19 Jun 2000 11:14:59 -0700 (PDT) (envelope-from se@freebsd.org) Received: from [194.97.50.138] (helo=mx0.freenet.de) by mout0.freenet.de with esmtp (Exim 3.14 #3) id 13464G-0000fe-00; Mon, 19 Jun 2000 20:14:40 +0200 Received: from [213.6.105.129] (helo=StefanEsser.FreeBSD.org) by mx0.freenet.de with esmtp (Exim 3.14 #3) id 13464F-0004dG-00; Mon, 19 Jun 2000 20:14:40 +0200 Received: by StefanEsser.FreeBSD.org (Postfix, from userid 200) id BAFDFC87; Mon, 19 Jun 2000 20:12:29 +0200 (CEST) Date: Mon, 19 Jun 2000 20:12:28 +0200 From: Stefan Esser To: Graham Wheeler Cc: freebsd-hackers@freebsd.org, Stefan Esser Subject: Re: PCI Plug 'n' Pray and old BIOSes Message-ID: <20000619201228.A2767@StefanEsser.FreeBSD.org> Reply-To: Stefan Esser Mail-Followup-To: Stefan Esser , Graham Wheeler , freebsd-hackers@freebsd.org References: <20000619145016.A2212@StefanEsser.FreeBSD.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: ; from gram@cequrux.com on Mon, Jun 19, 2000 at 03:32:47PM +0200 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 2000-06-19 15:32 +0200, Graham Wheeler wrote: > Stefan Esser wrote: > > Is the PS/2 mouse interface enabled ? It will try to grab IRQ 12, > > and may do so in a way that the IRQ can't be delivered from ISA > > or PCI slots ... > > The may be a psm driver in the kernel, but there is no PS/2 mouse device > on the motherboard or on any of the cards. The BIOS may configure the chip-set to directly connect the PS/2 mouse to IRQ 12 in a hardware specific way. Use of IRQ 12 for PCI interrupts may be impossible, but the PCI or Ethernet drivers can't tell, because it is all a function of chip-set internals. It doesn't matter whether there are any PS/2 drivers or even a PS/2 plug. > > > Perhaps all I need to do is toggle the PnP BIOS setting, but before I > > > pull out the screwdrivers and tear the two machines apart again, I'm > > > hoping to draw on someone else's experience here. > > BTW will setting the PnP BIOS to `enabled' have any effect? Not sure. You didn't tell anything about the system. I assume it is one of the Saturn I or Saturn II based boards, which were the first reliably working PCI based PC mainboards. Verbose boot messages may help, too, since they provide a lot of details about the hardware and the configuration performed by the BIOS. PnP BIOS usually applies to ISA PnP cards and should have no impact on PCI. But if your system predates ISA PnP, the term may well be used to toggle a PCI chip-set or bus initialisation feature. > I'll have to check that; I do still have the mboard manual somewhere. Ok. If you can't get it to work, then please send at least the following information: * name of mainboard (brand and model) * verbose boot message log Regards, STefan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message