Ollie Lho <[EMAIL PROTECTED]> writes:
> Actually, it is pretty standard for ACPI BIOS to reboot/halt system this
> way. BTW, what the hell is port 0xcf9 ?? Is that just 0xcf8 for PCI
> config
> space ??
No. But it is the isa io port you write to on the AMD766, and the
PIIXE to hard reboot your system. At first glance I thought it might
be as general as io port 0x92 that you can use to enable and disable
address line 20. I did a quick compare of the legacy ports on the
AMD766 and the SiS730 and the only port difference (I spotted) was the
SiS730 didn't support 0xcf9 :(
That is right in the middle of the PCI io port space wild. That is a
trick I hadn't realized.
Since watchdog timers are becomming more common place I suspect they
will take over eventually. So the easy to write code for the linux
kernel is to see if there is a non software watchdog timer device
connected to the system modify the reboot code to trigger the
watchdog timer to reboot.
Does ACPI require a watchdog timer?
Eric
