mavb man page on OpenBSD

mavb man page on OpenBSD

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MAVB(4)		       OpenBSD Programmer's Manual (SGI)	       MAVB(4)

NAME
     mavb - Moosehead A/V Board audio device

SYNOPSIS
     mavb0 at macebus0
     audio* at mavb?

DESCRIPTION
     The 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.  The mavb driver also makes it possible to control the
     playback volume by using the buttons on the front of the O2.

SEE ALSO
     audio(4), intro(4), macebus(4)

HISTORY
     The mavb driver first appeared in OpenBSD 3.7.

AUTHORS
     The mavb driver was written by Mark Kettenis.

CAVEATS
     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.

BUGS
     Currently only sample rates up to 48 kHz are supported.  The second DAC
     on the AD1843 codec sits idle.

OpenBSD 4.9		       November 18, 2009		   OpenBSD 4.9

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