3 apr 2014 kl. 17:54 skrev Daniel Mack <dan...@zonque.org>:
> On 04/03/2014 03:12 PM, Anders Genell wrote:
>> I have a Marian UCON-CX external usb sound card. It is to the best of my
>> knowledge not class compliant at all. It is not maintained by Marian any
>> longer, and only supported up to Windows XP, which as of the end of this
>> week is not maintained itself.
>>
>> I have emailed the Marian devs and they will not release a driver for
>> e.g. Win7/8, nor will they release any code for third party (linux)
>> developement.
>>
>> The sound card is hence basically an expensive paper weight.
>>
>> As far as I can guess, the card needs some blob uploaded at startup to
>> function. I have the original driver disk, but I am unsure if it
>> contains a complete binary blob, or if there is some MS voodoo going on
>> as well.
>
> Some cards just hide their class compliant interfaces behind vendor
> specific descriptors in order to escape the stupidness of the Windows
> USB stack. Others implement a completely proprietary protocol. Without
> looking into the communication, it's impossible to tell.
>
>> If anyone would like to take a stab at reverse engineering a linux
>> module for this card, I'd be happy to lend my card.
>
> I think a good first step would be to trace the communication between
> the driver and the card using a software analyzer. Either on the Windows
> side, or on Linux with usbmon, together with a VM such as VirtualBox.
>
Thanks!
I might be able to set up an old laptop I have laying around with e.g. Debian
and with a VirtualBox running XP SP3.
> It might be worth the effort, the hardware actually looks quite
> advanced, according to the specs on their website.
>
>
> Daniel
I could grant remote ssh access if someone would give it a shot - I'm not all
that well versed in the usbmon-audio-device-communication world...
Regards,
Anders
------------------------------------------------------------------------------
_______________________________________________
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user
