Re: question: i/o port 0x61 on x86 archs

Randy.Dunlap (rddunlap@osdl.org)
Sat, 8 Jun 2002 15:01:13 -0700 (PDT)


On Sat, 8 Jun 2002, Ravikiran G Thirumalai wrote:

| I have a question regdg do_nmi routine in x86; what does location 0x61
| from inb(0x61) do? Is it something very well known in intel archs?

Yes, see any Intel PIIX or ICH chipset spec.
I'm looking at the 82801BA I/O Controller Hub 2 (ICH2)
spec., section 9.7.1.

Port 0x61 is the NMI status and control register.

-- 
~Randy

- 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/