From owner-freebsd-hackers Wed Jan 10 09:34:17 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id JAA18227 for hackers-outgoing; Wed, 10 Jan 1996 09:34:17 -0800 (PST) Received: from synthcom.com (beacon.synthcom.com [198.145.98.253]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id JAA18185 for ; Wed, 10 Jan 1996 09:34:10 -0800 (PST) Received: from beacon.synthcom.com (beacon.synthcom.com [198.145.98.1]) by synthcom.com (8.6.12/8.6.12) with SMTP id JAA01565; Wed, 10 Jan 1996 09:30:33 GMT Date: Wed, 10 Jan 1996 09:30:33 +0000 () From: Neil Bradley X-Sender: root@beacon.synthcom.com To: Michael Smith cc: terry@lambert.org, hasty@rah.star-gate.com, freebsd-hackers@freebsd.org Subject: Re: PnP problem... In-Reply-To: <199601101003.UAA09007@genesis.atrad.adelaide.edu.au> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-hackers@freebsd.org Precedence: bulk On Wed, 10 Jan 1996, Michael Smith wrote: > Neil Bradley stands accused of saying: > > Back when I designed BIOSes for P5 motherboards, we'd initialize ISA > You realise that this was an incredibly brave thing to admit to? Or an incredibly STUPID thing to admit to... ;-) > As an example; FreeBSD has trouble reliably rebooting a number of > motherboards; the ones I've had problems with were all 486 systems, > but I'm sure there were some P5 boards with the same problems. I spoke to Rod Grimes about this about a year ago. > Could you detail the appropriate steps to take to reliably force a > reboot from protected mode? And could whoever was in there last > (Rod I suspect...) look and see how this compares with the way we do > things? We'd force the keyboard controller to cause the CPU to reset. If remember correctly, doing an out 91h, 0feh caused a reboot. I can't remember for sure - I'll check some old source code when I get back home and let you know. -->Neil ------------------------------------------------------------------------------- Synthcom System's homepage: http://www.synthcom.com/ Europa Upgrade, Synth patches (D-50, Xpander/Matrix 12), used gear pricelist