Re: dummy question about SMB/PIC code

If it is not possible to switch the fan off, may be it's possible to put the CPU in a low consomation state that could allow turning the fan off. The ACPI standard allows reducing CPU frequency...

Note that I know I could say dummy things because I'm only discovering PC hardware, just don't be too impatient with me ;)

Bye

Cyril

> On Monday 16 January 2006 09:53, Cyril Gouget wrote:
> > Hello
> >
> > As I am slepping near my xbox wich is promise to become a great FTP sever,
> > I'm trying to find a way to make it noisefree.
> >
> > Reading
> > http://www.xbox-linux.org/wiki/Porting_an_Operating_System_to_the_Xbox_HOWT
> >O we can find a little program that turn it off and on. Thinking to control
> > the fan that way, I want to understand this program but the
> > outw_p(inw(XBOX_SMB_IO_BASE), XBOX_SMB_IO_BASE); makes me doubt wether I'm
> > stupid or not...
> >
> > Wat is this line for?
> >
> > (maybe some information about power, fan or hardrive management would also
> > be cool)
> >
> > Bye
> >
> > Cyril
> 
> Assuming you're talking about using Linux here:
> 
> Have a look at the code in libxbox (and more specifically, in tools, is a fan 
> control daemon). You can do this via webcvs:
> 
> http://cvs.xbox-linux.org/viewcvs.py/xbox-linux/tools/
> 
> fanctl is the fan speed controller. If you improve it, feel free to send us 
> patches!
> 
> It doesn't use any ASM, so is therefore simpler to understand!
> (And no, I've not got a clue what that does either!)
> 
> My experience is that you don't really get a huge reduction in noise, because 
> you cannot turn the fan down THAT far before the temperature shoots up.
> 
> David

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