>> 
>> Finally I figured out how to enable the rear channel separately from the 
front 
>> on the creative labs CT5880 (= modified ens1371 as it seems).
 
>great!  thanks for your work!

no problem. 
Thank you guys for your work. Figuring this out took me half a day. I'm sure 
that you guys all spent more than that on this project. I'm happy to be able 
to help out. I wanted the rear channels to work, and so I tried it myself. 
Now everybody can benifit from this work. Isn't this the way open-source 
works? take a lot - give what you can

> Uros has been working on the ALSA SAM9407 driver, and IIRC, maxi ISIS
> uses a similar (same?) chip.  he might be able to help the development
> of this driver.
>
The ISIS uses the successor of the SAM9407, the SAM9707. Differences seem to 
be minor (only the fact that it supports 6 extra channels).

The problem is that it is an ISA chip, and they used a 'creative' way of 
building a PCI card with it: They built a card based on the ESS Maestro-2EM, 
which is an Maestro-2E with an additional 'modem dsp' port, i.e. an ISA port. 
They used this port to connect the SAM chip.

So actually it would be helpfull if I had someone with ESS Maestro experience. 
I'm wondering if it's possible to set up a DMA transfer to the modem port. 
The Maestro is (in my opinion) a pretty compicated device so I think it might 
be possible.
Any Maestro-connaiseurs on this list?

Pieter




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