Messages in this thread | | | Date | Mon, 21 Apr 2008 22:34:10 +0200 | From | Rene Herman <> | Subject | Re: What pokes the ISA IO port of 0x211 ? |
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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.
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