[alsa-devel] e-mu 1212m and 1820(m) patch

[Ctirad Fertr]

> The link between hana and emu10k2 is 32bit.
> The link between the emu10k2 and the PCI bus for capture is 16bit and
> limited to 16 channels. 

Really? I'm almost sure that emu10k2 is capable of 64 streams at 16/44.1
(48kHz) resolution. 

> I decided to instead make this link 32bit, by 
> using 2 16bit channels, thus resulting in 16/2 = 8 channels.
> I do have one datasheet that hints at a 24bit channel from emu10k2 and
> the PCI bus, but I have not checked if the 1212m version of the emu10k2
> supports it.

A friend of mine does 16 channel recordings on 1820m under windows, so it's 
definitely possible. I have only 1212M (old version) and it's capable of 12 
ins and 12 outs at 44.1/48kHz, 8 ins and 8 outs at 96kHz and finally 4 ins 
and 4 outs at 192kHz. 

> It might only be the 1616m that supports it, and I have not 
> added support for that in alsa yet.

How much difference is between current 1820 (old 1010)  and 1616 (new 1010) 
code? Do you have something working? Anyway, I have good relations with local 
e-mu delaer, so I can borrow any e-mu hardware currently available. I also 
have gear needed for testing S/PDIF/ADAT/sync card functionality. 

Regards,

Ctirad