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Re: Dell Media Direct button

From: Robert Millan
Subject: Re: Dell Media Direct button
Date: Thu, 21 Aug 2008 15:20:52 +0200
User-agent: Mutt/1.5.13 (2006-08-11)

On Thu, Aug 21, 2008 at 02:13:05PM +0200, Stefan Reinauer wrote:
> The sequence of writing to port 0x70 / reading from port 0x71 reflects
> reading from the computer's "cmos" nvram memory.
> bit 7 of 0x70 is reserved for disabling NMIs, so the actual information
> is stored in byte 0x79[8] in the cmos.
> To allow full flexibility, there should just be a module that allows
> reading / writing the cmos values (could also be useful for other
> things, such as reading a boot order set by the bios).

Ah, good catch.  For the record, we already have code that accesses cmos,
in the date handling functions recently added by Bean.

Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

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