Messages in this thread | | | Date | Mon, 31 Dec 2007 10:19:06 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override |
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Alan Cox wrote: > On Sun, 30 Dec 2007 16:23:20 -0800 > "H. Peter Anvin" <hpa@zytor.com> wrote: > >>> continuing to investigate for a cause. It would be nice if it were a >>> BIOS-fixable problem. It would be even nicer if the BIOS were GPL... >> If it was an SMM trap, I would expect it to be trapped in the SuperIO chip. > > Many SuperIO chips do port 0x80, but they do it over the LPC and they do > it in hardware to the parallel port data lines. The timings posted for > 0x80 on his box are really a bit fast for LPC.
Ah, that would eliminate the SuperIO chip.
-hpa
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