Messages in this thread | | | Date | Thu, 14 Mar 2002 14:06:32 -0800 (PST) | From | John Heil <> | Subject | Re: IO delay, port 0x80, and BIOS POST codes |
| |
On 14 Mar 2002, H. Peter Anvin wrote:
> Date: 14 Mar 2002 13:57:40 -0800 > From: H. Peter Anvin <hpa@zytor.com> > To: linux-kernel@vger.kernel.org > Subject: Re: IO delay, port 0x80, and BIOS POST codes > > Followup to: <Pine.LNX.4.33.0203141318130.9855-100000@penguin.transmeta.com> > By author: Linus Torvalds <torvalds@transmeta.com> > In newsgroup: linux.dev.kernel > > > > Port ED is fine for a BIOS, which (by definition) knows what the > > motherboard devices are, and thus knows that ED cannot be used by > > anything. > > > > But it _is_ an unused port, and that's exactly the kind of thing that > > might be used sometime in the future. Remember the port 22/23 brouhaha > > with Cyrix using it for their stuff, and later Intel getting into the fray > > too? > > > > So the fact that ED works doesn't mean that _stays_ working. > > > > It is, in fact, broken on several systems -- I tried ED in SYSLINUX > for a while, and it broke things for people.
It does work on many, in fact, we used on a Crusoe based platform as well as the other x86s
Let's make it a configurable kernel debug/hacking option else we have the added burden of chasing down a common address.
Johnh
> > -hpa > -- > <hpa@transmeta.com> at work, <hpa@zytor.com> in private! > "Unix gives you enough rope to shoot yourself in the foot." > http://www.zytor.com/~hpa/puzzle.txt <amsp@zytor.com> > - > 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/ >
- ----------------------------------------------------------------- John Heil South Coast Software Custom systems software for UNIX and IBM MVS mainframes 1-714-774-6952 johnhscs@sc-software.com http://www.sc-software.com -----------------------------------------------------------------
- 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/
| |