Date: Fri, 03 Mar 2000 13:54:52 -0800 From: Mike Smith <msmith@freebsd.org> To: takawata@shidahara1.planet.sci.kobe-u.ac.jp Cc: Nikolai Saoukh <nms@Brigada-A.Ethereal.RU>, current@freebsd.org Subject: Re: BIOS settings (was Instrallation floppies and USB) Message-ID: <200003032154.NAA01465@mass.cdrom.com> In-Reply-To: Your message of "Fri, 03 Mar 2000 23:29:11 %2B0900." <200003031429.XAA11274@libr.scitec.kobe-u.ac.jp>
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> In message <20000303151559.A4330@Draculina.Universe>, Nikolai Saoukh wrote: > >> And any version FreeBSD ever have been released expects BIOS to > >> set PnP setting. > > > >Well, > >what then pnp stuff (/usr/src/sys/isa/pnp*) do in -current? > > They can > 1. reads PnP setting from ISA PnP system. > 2. write PnP setting as User specified. > > And there is no *automatic* PnP setting capability yet ,as far as I know. You need to look harder. 8) A more detailed explanation would be this: With "PnP OS" set to "No", the BIOS will enumerate and configure all Plug-and-Play devices. It will perform all the resource assignments that it can, and enable all devices for which it was able to assign resources. (Some are so enthusiastic that if they can't assign resources, they will hang.) With "PnP OS" set to "Yes", the BIOS is only required to enumerate and configure Plug-and-Play devices which identify themselves as being possibly involved in the boot path - the primary input and output devices, bootable media devices. BIOS vendors have various different ideas about how far to take this; some won't configure PCI devices that aren't in a "bootable" class, some will still configure everything. Note: In the above, "Plug-and-Play" refers to any of the soft-configured peripheral types, including ISA PnP and PCI. -- \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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