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