On Thu, Apr 10, 2008 at 09:47:37PM +0200, Zbigniew Baniewski wrote:

quoted text
> On Thu, Apr 10, 2008 at 09:36:51PM +0200, Alexandre Ratchov wrote:

>

> >  - first, envy24 is a generic digital only chip; it's connected to

> >    up to 4 codecs that do the analog<->digital conversions and that

> >    hold the gain knobs. So to add support for a new cards we must

> >    add support for its codecs, and we need to know how these codecs

> >    are wired to the envy24 chip, how gpio pins are used, etc...

> >    (this may require docs from the sound card manufacturer, not

> >    via)

>

> That's I was afraid of.

> 

well, if both codecs and the digital chip are well documented, how

they are connected is not too hard to guess. There's an EEPROM that

gives hints.
> > afaik, these cards are based on envy24ht, not envy24.

quoted text
>

> What do you think about (much cheaper) Chaintech AV-710? There's a version

> with envy24... perhaps someone's using this under OpenBSD?

>

> http://icrontic.com/articles/chaintech_av710_71_audio_card_review

> http://techgage.com/article/chaintech_av-710_71_sound_card/

> http://www.sudhian.com/index.php?/articles/show/654

>

according to the second link, it uses envy24HT so it will not work

with the current envy(4) driver. FYI envy24 is also known as VT1712

or ICE1712. Esi-julia and AV-710 seem to use the VT1721.
For a sound card (beside being supported) the most important is the

analog part, that will determine the sound quality, the esi julia

seems quite promising in this respect.
Nevertheless, if i one day I get one, I'll happily work on the "HT"

driver ;)
-- Alexandre