Support for realtek alc 655

Support for realtek alc 655

[Marco Canini]

hi,

i'm moving to buy a new mother board: gigabyte 8knxp.
it has integrated an audio ac97 codec chipset by realtek: alc655
i searched in the sound cards matrix and i couldn't find it so i surfed
the web for any kind of support for it in linux but i found nothing.
from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
is this chipset supported by alsa?

thanks
-- 
Marco Canini <m.canini@libero.it>



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Re: Support for realtek alc 655

[James Courtier-Dutton]

Marco Canini wrote:
> hi,
> 
> i'm moving to buy a new mother board: gigabyte 8knxp.
> it has integrated an audio ac97 codec chipset by realtek: alc655
> i searched in the sound cards matrix and i couldn't find it so i surfed
> the web for any kind of support for it in linux but i found nothing.
> from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
> is this chipset supported by alsa?
> 
> thanks
We have the specs for the chip, so supporting it should not be too much 
of a problem. See the nice PDF files from realtek web site :-) .

If you get the motherboard, I could work with you to get it working.
It looks very similar to the alc650, which is already supported, so the 
work involved whould not be too much. I an fairly sure that all that 
would need doing is to add recognition for the chip in ac97_codec.c and 
then program it exactly the same as the alc650. Some of the extra 
functions of the alc655 might not be supported, but you will get 5.1 
channel sound output and be able to record. You just might not be able 
to select all the different combinations of sound in/out jacks.

Cheers
James





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Re: Support for realtek alc 655

[Marco Canini]

On Mon, 2003-09-01 at 13:37, James Courtier-Dutton wrote:
> Marco Canini wrote:
> > hi,
> > 
> > i'm moving to buy a new mother board: gigabyte 8knxp.
> > it has integrated an audio ac97 codec chipset by realtek: alc655
> > i searched in the sound cards matrix and i couldn't find it so i surfed
> > the web for any kind of support for it in linux but i found nothing.
> > from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
> > is this chipset supported by alsa?
> > 
> > thanks
> We have the specs for the chip, so supporting it should not be too much 
> of a problem. See the nice PDF files from realtek web site :-) .
> 
> If you get the motherboard, I could work with you to get it working.
> It looks very similar to the alc650, which is already supported, so the 
> work involved whould not be too much. I an fairly sure that all that 
> would need doing is to add recognition for the chip in ac97_codec.c and 
> then program it exactly the same as the alc650. Some of the extra 
> functions of the alc655 might not be supported, but you will get 5.1 
> channel sound output and be able to record. You just might not be able 
> to select all the different combinations of sound in/out jacks.
> 
> Cheers
> James
> 
Hi,

it would be cool. just another question before i go to buy: does the
ac97 code support hw multiplexing aka multiple playing for the alc650
dsp?

thanks
> 
> 
> 
> 
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-- 
Marco Canini <m.canini@libero.it>



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Re: Support for realtek alc 655

[Takashi Iwai]

At 01 Sep 2003 20:23:34 +0200,
Marco Canini wrote:
> 
> On Mon, 2003-09-01 at 13:37, James Courtier-Dutton wrote:
> > Marco Canini wrote:
> > > hi,
> > > 
> > > i'm moving to buy a new mother board: gigabyte 8knxp.
> > > it has integrated an audio ac97 codec chipset by realtek: alc655
> > > i searched in the sound cards matrix and i couldn't find it so i surfed
> > > the web for any kind of support for it in linux but i found nothing.
> > > from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
> > > is this chipset supported by alsa?
> > > 
> > > thanks
> > We have the specs for the chip, so supporting it should not be too much 
> > of a problem. See the nice PDF files from realtek web site :-) .
> > 
> > If you get the motherboard, I could work with you to get it working.
> > It looks very similar to the alc650, which is already supported, so the 
> > work involved whould not be too much. I an fairly sure that all that 
> > would need doing is to add recognition for the chip in ac97_codec.c and 
> > then program it exactly the same as the alc650. Some of the extra 
> > functions of the alc655 might not be supported, but you will get 5.1 
> > channel sound output and be able to record. You just might not be able 
> > to select all the different combinations of sound in/out jacks.
> > 
> > Cheers
> > James
> > 
> Hi,
> 
> it would be cool. just another question before i go to buy: does the
> ac97 code support hw multiplexing aka multiple playing for the alc650
> dsp?

it has nothing to do with which ac97 codec is.
if it's a VIA 823x chipset (except for VIA8233A), then yes. 


Takashi


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Re: Support for realtek alc 655

[James Courtier-Dutton]

Marco Canini wrote:
> On Mon, 2003-09-01 at 13:37, James Courtier-Dutton wrote:
> 
>>Marco Canini wrote:
>>
>>>hi,
>>>
>>>i'm moving to buy a new mother board: gigabyte 8knxp.
>>>it has integrated an audio ac97 codec chipset by realtek: alc655
>>>i searched in the sound cards matrix and i couldn't find it so i surfed
>>>the web for any kind of support for it in linux but i found nothing.
>>>from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
>>>is this chipset supported by alsa?
>>>
>>>thanks
>>
>>We have the specs for the chip, so supporting it should not be too much 
>>of a problem. See the nice PDF files from realtek web site :-) .
>>
>>If you get the motherboard, I could work with you to get it working.
>>It looks very similar to the alc650, which is already supported, so the 
>>work involved whould not be too much. I an fairly sure that all that 
>>would need doing is to add recognition for the chip in ac97_codec.c and 
>>then program it exactly the same as the alc650. Some of the extra 
>>functions of the alc655 might not be supported, but you will get 5.1 
>>channel sound output and be able to record. You just might not be able 
>>to select all the different combinations of sound in/out jacks.
>>
>>Cheers
>>James
>>
> 
> Hi,
> 
> it would be cool. just another question before i go to buy: does the
> ac97 code support hw multiplexing aka multiple playing for the alc650
> dsp?
> 
> thanks
> 
The alc650/alc655 do not support hw multiplexing and can only be opened 
once.




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Re: Support for realtek alc 655

[Marco Canini]

On Mon, 2003-09-01 at 20:48, James Courtier-Dutton wrote:
> Marco Canini wrote:
> > On Mon, 2003-09-01 at 13:37, James Courtier-Dutton wrote:
> > 
> >>Marco Canini wrote:
> >>
> >>>hi,
> >>>
> >>>i'm moving to buy a new mother board: gigabyte 8knxp.
> >>>it has integrated an audio ac97 codec chipset by realtek: alc655
> >>>i searched in the sound cards matrix and i couldn't find it so i surfed
> >>>the web for any kind of support for it in linux but i found nothing.
> >>>from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
> >>>is this chipset supported by alsa?
> >>>
> >>>thanks
> >>
> >>We have the specs for the chip, so supporting it should not be too much 
> >>of a problem. See the nice PDF files from realtek web site :-) .
> >>
> >>If you get the motherboard, I could work with you to get it working.
> >>It looks very similar to the alc650, which is already supported, so the 
> >>work involved whould not be too much. I an fairly sure that all that 
> >>would need doing is to add recognition for the chip in ac97_codec.c and 
> >>then program it exactly the same as the alc650. Some of the extra 
> >>functions of the alc655 might not be supported, but you will get 5.1 
> >>channel sound output and be able to record. You just might not be able 
> >>to select all the different combinations of sound in/out jacks.
> >>
> >>Cheers
> >>James
> >>
> > 
> > Hi,
> > 
> > it would be cool. just another question before i go to buy: does the
> > ac97 code support hw multiplexing aka multiple playing for the alc650
> > dsp?
> > 
> > thanks
> > 
> The alc650/alc655 do not support hw multiplexing and can only be opened 
> once.
> 
There exist some ac97 codecs capable of hw multiplexing?
What are them?

thanks
> 
> 
> 
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-- 
Marco Canini <m.canini@libero.it>



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Re: Support for realtek alc 655

[Takashi Iwai]

At 04 Sep 2003 14:43:05 +0200,
Marco Canini wrote:
> 
> On Mon, 2003-09-01 at 20:48, James Courtier-Dutton wrote:
> > Marco Canini wrote:
> > > On Mon, 2003-09-01 at 13:37, James Courtier-Dutton wrote:
> > > 
> > >>Marco Canini wrote:
> > >>
> > >>>hi,
> > >>>
> > >>>i'm moving to buy a new mother board: gigabyte 8knxp.
> > >>>it has integrated an audio ac97 codec chipset by realtek: alc655
> > >>>i searched in the sound cards matrix and i couldn't find it so i surfed
> > >>>the web for any kind of support for it in linux but i found nothing.
> > >>>from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
> > >>>is this chipset supported by alsa?
> > >>>
> > >>>thanks
> > >>
> > >>We have the specs for the chip, so supporting it should not be too much 
> > >>of a problem. See the nice PDF files from realtek web site :-) .
> > >>
> > >>If you get the motherboard, I could work with you to get it working.
> > >>It looks very similar to the alc650, which is already supported, so the 
> > >>work involved whould not be too much. I an fairly sure that all that 
> > >>would need doing is to add recognition for the chip in ac97_codec.c and 
> > >>then program it exactly the same as the alc650. Some of the extra 
> > >>functions of the alc655 might not be supported, but you will get 5.1 
> > >>channel sound output and be able to record. You just might not be able 
> > >>to select all the different combinations of sound in/out jacks.
> > >>
> > >>Cheers
> > >>James
> > >>
> > > 
> > > Hi,
> > > 
> > > it would be cool. just another question before i go to buy: does the
> > > ac97 code support hw multiplexing aka multiple playing for the alc650
> > > dsp?
> > > 
> > > thanks
> > > 
> > The alc650/alc655 do not support hw multiplexing and can only be opened 
> > once.
> > 
> There exist some ac97 codecs capable of hw multiplexing?

no.  as i wrote, it has nothing to do with ac97 codec.
it's the part of core-sound chip.


Takashi


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Re: Support for realtek alc 655

[Marco Canini]

On Thu, 2003-09-04 at 15:07, Takashi Iwai wrote:
> At 04 Sep 2003 14:43:05 +0200,
> Marco Canini wrote:
> > 
> > On Mon, 2003-09-01 at 20:48, James Courtier-Dutton wrote:
> > > Marco Canini wrote:
> > > > On Mon, 2003-09-01 at 13:37, James Courtier-Dutton wrote:
> > > > 
> > > >>Marco Canini wrote:
> > > >>
> > > >>>hi,
> > > >>>
> > > >>>i'm moving to buy a new mother board: gigabyte 8knxp.
> > > >>>it has integrated an audio ac97 codec chipset by realtek: alc655
> > > >>>i searched in the sound cards matrix and i couldn't find it so i surfed
> > > >>>the web for any kind of support for it in linux but i found nothing.
> > > >>>from what i see in the ac97 support code the alc650 is supported but no mention to alc655.
> > > >>>is this chipset supported by alsa?
> > > >>>
> > > >>>thanks
> > > >>
> > > >>We have the specs for the chip, so supporting it should not be too much 
> > > >>of a problem. See the nice PDF files from realtek web site :-) .
> > > >>
> > > >>If you get the motherboard, I could work with you to get it working.
> > > >>It looks very similar to the alc650, which is already supported, so the 
> > > >>work involved whould not be too much. I an fairly sure that all that 
> > > >>would need doing is to add recognition for the chip in ac97_codec.c and 
> > > >>then program it exactly the same as the alc650. Some of the extra 
> > > >>functions of the alc655 might not be supported, but you will get 5.1 
> > > >>channel sound output and be able to record. You just might not be able 
> > > >>to select all the different combinations of sound in/out jacks.
> > > >>
> > > >>Cheers
> > > >>James
> > > >>
> > > > 
> > > > Hi,
> > > > 
> > > > it would be cool. just another question before i go to buy: does the
> > > > ac97 code support hw multiplexing aka multiple playing for the alc650
> > > > dsp?
> > > > 
> > > > thanks
> > > > 
> > > The alc650/alc655 do not support hw multiplexing and can only be opened 
> > > once.
> > > 
> > There exist some ac97 codecs capable of hw multiplexing?
> 
> no.  as i wrote, it has nothing to do with ac97 codec.
> it's the part of core-sound chip.
> 
sorry but i'm lost: isn't the ac97 codec a sound chip?
what's this ac97 codec?

and what about the ad1985 mounted by asus on their mobos.

thanks

> 
> Takashi
> 
> 
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-- 
Marco Canini <m.canini@libero.it>



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Re: Support for realtek alc 655

[p z oooo]

>There exist some ac97 codecs capable of hw multiplexing?
>What are them?

I think that none. AC97 is only part of sound system. These part is 
reponsible for A/D and D/A conversion + analog mixer + spdif in + 
spdif out. Most capability is in second part. This second part is 
responsible for playing digital sound and hardware mixing and is 
integrated into motherboard chipset. For example you can have two 
motherboards which uses same AC97 codec and one (for example VIA8235 
based) is capable hw mixing of 4 streams and second (for example 
intel based) can't do hw mixing.

Peter Zubaj



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Re: Support for realtek alc 655

[Marco Canini]

On Thu, 2003-09-04 at 15:49, p z oooo wrote:
> >There exist some ac97 codecs capable of hw multiplexing?
> >What are them?
> 
> I think that none. AC97 is only part of sound system. These part is 
> reponsible for A/D and D/A conversion + analog mixer + spdif in + 
> spdif out. Most capability is in second part. This second part is 
> responsible for playing digital sound and hardware mixing and is 
> integrated into motherboard chipset. For example you can have two 
> motherboards which uses same AC97 codec and one (for example VIA8235 
> based) is capable hw mixing of 4 streams and second (for example 
> intel based) can't do hw mixing.
> 
Oh, ok now i get it. so it depends on the mobo's chipset, and from what
you write i understand that all mobos based on i875p unregarding of
particular ac97 codec aren't able of doing hw mixing.

is dmix a good solution in those cases?

thanks

> Peter Zubaj
> 
> 
> 
> ====================== REKLAMA =================================
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> Sun Fire V210 server v cenach uz od 125.000,- Sk bez DPH
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> ================================================================
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Marco Canini <m.canini@libero.it>



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