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Subject: Re: calling bios interrupt
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jozef Kutej <jozef.kutej@slovanet.net>
Cc: linux-kernel@vger.kernel.org
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Date: Thu, 02 Feb 2006 14:43:28 +0000
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On Iau, 2006-02-02 at 08:48 +0100, Jozef Kutej wrote:
> Hello.
> 
> Can someone help me solve my problem with on board watch dog timer that 
> need to call bios interrupt? Here's how to update watch dog timer.
> 
> mov ax,6f02h
> mov bl, 30	;number of seconds
> int 15h
> 
> How can i do this in kernel so that i can write wdt driver?

You need to drive the hardware directly. Ask the vendor for the hardware
info, or alternatively you might want to try using a library like lrmi
in user space to call it and log the I/O instructions it tries to
execute.