Re: What pokes the ISA IO port of 0x211 ?

Rene Herman
2008-04-21T20:34:22Z

On 21-04-08 22:05, Rene Herman wrote:

> On 21-04-08 13:12, Frantisek Rysanek wrote:
>> Dear Everyone,
>>
>> I'm dealing with an embedded PC motherboard that contains some custom
>> circuitry (GPIO), accessible via an ISA IO range between 0x200 and
>> 0x218.
>> There's an interesting issue with this in recent Linux (tried 2.6.22.6
>> and 2.6.24.2): something probes IO port 0x211 on boot, which happens
>> to be an add-on buzzer control port - effectively the kernel boot
>> launches an accoustic alarm :-)
>> Any ideas what this could be?
>
> ISAPnP default read data port is close at 0x213...
>
> I haven't checked but this also reminds me of sensor chips. Do you have
> sensor drivers builtin?

Ah, it's the old analog gameport: ns558_init.

Rene.