On Saturday 29 January 2011 17:34:18 meino.cra...@gmx.de wrote:
> Volker Armin Hemmann <volkerar...@googlemail.com> [11-01-29 16:39]:
> > On Saturday 29 January 2011 15:18:10 meino.cra...@gmx.de wrote:
> > > Hi,
> > > 
> > > when listing my hardware with lshw I find some stuff build
> > > into my ASUS Crosshair IV Formula, which I seem not to use
> > > and I like to know, for what it is good for:
> > > 
> > > These are excerpts from the output of lshw:
> > >         *-serial UNCLAIMED
> > >         
> > >              description: SMBus
> > >              product: SBx00 SMBus Controller
> > >              vendor: ATI Technologies Inc
> > >              physical id: 14
> > >              bus info: pci@0000:00:14.0
> > >              version: 41
> > >              width: 32 bits
> > >              clock: 66MHz
> > >              configuration: latency=0
> > 
> > sensors, and spd-eprom are accessed this way.
> > 
> > > and
> > > 
> > >         *-isa
> > >         
> > >              description: ISA bridge
> > >              product: SB700/SB800 LPC host controller
> > >              vendor: ATI Technologies Inc
> > >              physical id: 14.3
> > >              bus info: pci@0000:00:14.3
> > >              version: 40
> > >              width: 32 bits
> > >              clock: 66MHz
> > >              capabilities: isa bus_master
> > >              configuration: latency=0
> > 
> > today's incarnation is called 'lpc'. Your sensor chip is probably
> > accessed through this. Also connectiopn sensor/superio-chipset.
> > 
> > > and
> > > 
> > >            *-multimedia
> > >            
> > >                 description: Audio device
> > >                 product: GF108 High Definition Audio
> > >                 Controller
> > >                 vendor: nVidia Corporation
> > >                 physical id: 0.1
> > >                 bus info: pci@0000:08:00.1
> > >                 version: a1
> > >                 width: 32 bits
> > >                 clock: 33MHz
> > >                 capabilities: pm msi pciexpress
> > >                 bus_master cap_list
> > >                 configuration: driver=HDA Intel
> > >                 latency=0
> > >                 resources: irq:25
> > >                 memory:fe97c000-fe97ffff
> > > 
> > > (I have a MSI GT430 (nvidia) card and onboard audio:
> > >         *-multimedia
> > >         
> > >              description: Audio device
> > >              product: SBx00 Azalia (Intel HDA)
> > >              vendor: ATI Technologies Inc
> > >              physical id: 14.2
> > >              bus info: pci@0000:00:14.2
> > >              version: 40
> > >              width: 64 bits
> > >              clock: 33MHz
> > >              capabilities: pm bus_master cap_list
> > >              configuration: driver=HDA Intel latency=64
> > >              resources: irq:16 memory:fcaf8000-fcafbfff
> > > 
> > > ).
> > > 
> > > 
> > > 
> > > lspci -k of those device/chips/whatever does say for the nvidia
> > > audio:
> > > 
> > > 08:00.1 Audio device: nVidia Corporation GF108 High Definition Audio
> > > Controller (rev a1) Subsystem: Micro-Star International Co., Ltd.
> > > Device 2304
> > > 
> > >   Kernel driver in use: HDA Intel
> > >   Kernel modules: snd-hda-intel
> > > 
> > > but...for what reason there is an audio device in my graphics card?
> > > Sounds to me like a bicycle with onboard toaster... ;)
> > 
> > hdmi.
> > Because hdmi is able to transport sound. Also look up the DRM mess.
> > 
> > > for the smbus thingy as for the ISA-bridge there no additional info.
> > > For what reason there is an ISA bridge on a board which skipped
> > > floppy controller and IDE???
> > 
> > yes.
> > 
> > > How can I make what use of it?
> > 
> > you probably already do.
> 
> How do you define "probably" ? :)

well, your board is able to boot. So the bios is able to access spdrom to read 
the memory settings. This is done via smbus.
If you use sensors, you are probably using isa/lipc bus to access the chip. 
And even if you don't. Do you have a ps/2 keyboard? The keyboard controller 
sits in the same superio chip as the sensors.

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