[linux-audio-dev] Re: [linux-audio-user] Re: Firewire, what's the story?

Robert Jonsson robert.jonsson at dataductus.se
Tue Dec 9 12:54:42 UTC 2003


tisdagen den 09 december 2003 13.35 skrev Steve Harris:
> On Tue, Dec 09, 2003 at 12:57:16 +0100, Robert Jonsson wrote:
> > I googled a little last night, some people we all know popped up here and
> > there (Hi Steve, Mark and Bob).
> > There was a LAD message from 2001, someone who had been in contact with
> > Yamaha and it seemed they(Yamaha) where working towards making mLan a
> > part of the A&M standard (I think I got that right...not sure)... now...
> > I'm not entirely sure what this means. It seemed as the A&M standards
> > also cost a lot of money?
>
> There is a connection mangement mart of mLAN that is/was not included in
> the IEEE specs.
>
> The A+M specs are available for free:
> http://inanna.ecs.soton.ac.uk/~swh/mLAN/

Ah, nice. Though I found several other/newer specs at:
http://www.1394ta.org/Technology/Specifications/specifications.htm

as far as I can tell they cost money though... perhaps they don't add anything 
of interest.

/Robert

>
> > Do we have enough information to implement mLan support?
>
> Everything but the connection management. I know thats inportant, but
> I dont know how important.
>
> Theres also the issue that some of these firewire ADDA converters might
> not use mLAN or A+M. In that case things may even e easier - assuming we
> can get specs from the mantufacturer.
>
> > As I understand it, Bob Ham had/is working on implementing 61883 support
> > for Jack, which seems like it's needed for mLan, a layer below it
> > perhaps? How far has this come, is there something one can test somehow,
> > what hardware do one need?
>
> He has partly working non-61883 audio over firewire support. I think its
> quite 61883 flavoured though - so if/when its working it should be hard to
> make it real 61883.
>
> - Steve



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