Moosehead A/V Board audio device
mavb0 at macebus0
audio* at mavb?
driver provides support for the
Moosehead A/V Board found on SGI O2 machines.
The Moosehead A/V Board uses an AD1843 codec that supports 8- and 16-bit audio
sample recording and playback at rates from 5 to 54 kHz, with 1 Hz resolution.
driver also makes it possible to
control the playback volume by using the buttons on the front of the O2.
driver first appeared in
driver was written by
The analog mixer in the AD1843 codec does not provide a master volume control.
Therefore, the O2 volume buttons only control the output volume of the DAC.
Currently only sample rates up to 48 kHz are supported. The second DAC on the
AD1843 codec sits idle.