On Fri, 30 Jul 2004, Micha Feigin wrote:
> The reset will force a reset, thats true (I am not sure it even goes
> through the bios).
its sometimes connected to the nmi on the cpu and/or the power switch
is connected to it or both .. just depends
every low level thingie goes thru the bios if there is no linux device
driver for it
> > - hitting the power switch ... will power off the box immediately
> > or delay 5 seconds before power off .. more bios code ..
> >
>
> Thats mostly false for most machines (at least intels) still alive today
..
> Pressing the button for at least 4-5 seconds will usually force a hard
> shutdown.
i'd bet that the holding the bios or the do it immediately is in the bios
- once you hit the on-off switch ... it will either shutdown
now or in 4-5 seconds if you hold it .... or nothing will happen
cause the bios didnt think you did what it wanted
all the apm/acpi is way up in the userland sw ... not down at the
itty bitty hw level of wires and bios
c ya
alvin
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