[alsa-devel] [PATCH] ALSA: Support Media Vision Jazz16 chips

Rask Ingemann Lambertsen rask at sygehus.dk
Tue Mar 27 22:14:01 CEST 2007

On Tue, Mar 27, 2007 at 10:57:48AM +0200, Rene Herman wrote:
> On 03/27/2007 02:32 AM, Rask Ingemann Lambertsen wrote:
> >   Also, if someone, somehow, manages to have two of these cards, I would
> >find it unforgivable if it didn't just work. According to this press
> >release
> ><URL:http://findarticles.com/p/articles/mi_m0NEW/is_1993_July_23/ai_14099965>,
> >there should be motherboards with Jazz16 chips on them, presumably to be
> >configured using the PnPBIOS (the specification for which was released in
> >1994). It might still be possible to have a stand-alone Jazz16 card in
> >addition to an on-board one.

   Texas Instruments/Acer TravelMate 5000 series has one on-board.
Interestingly, the User's Reference Guide lists 1, 3, 5 and 7 as valid DMA
channels for both 8-bit and 16-bit playback. Since the chip is only capable
of half-duplex AFAIK, why have two DMA channels? What am I missing?

> The snd_card_set_dev() was the other non-trivial thing in there. Was 
> that logged?

   It was (even if at 2:32 AM), and indeed automatic module loading didn't

Rask Ingemann Lambertsen

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