Yo, back on Wednesday 05 May 2010 Florian Faber was all like:
Reuben!
On the upside, ALSA exposes all 64 matrix inputs
that are available
for the matrix. I believe (not for sure) that on windows systems, only
the first 16 are exposed. So instead of the advertized 16x16 matrix, you
have a 64x16 matrix.
What 64 channels? The card only has 16 input channels.
Flo
Inputs to the card's matrix, not inputs to the card itself.
If I remember correctly the matrix has 128 inputs, the first 64 are reserved for hardware
inputs (on this unit, only the first 16 are actually used by the card inputs) The last 64
are reserved for OS audio sink inputs There are 64 outputs from the matrix for the card
outputs (again, on this card only the first 16 of them go anywhere)
Alsa exposes all 64 matrix inputs as alsa ouputs, and I don't think the windows driver
does that. (Never played with the windows driver, so I may be wrong about that)
IIRC, they put such a huge matrix on it because they designed one chip to slap on all
their cards in that family. Saves money to just design and fab one chip instead of a
separate chip for each unit.
-Reuben