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+.\"     $OpenBSD: audiocs.4,v 1.1 2001/10/05 17:57:25 jason Exp $
+.\"
+.\" Copyright (c) 2001 Jason L. Wright (jason@thought.net)
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Jason L. Wright
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+.\" DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd October 1, 2001
+.Dt AUDIOCS 4 sparc64
+.Os
+.Sh NAME
+.Nm audiocs
+.Nd SPARC64 SBus CS4231 audio interface
+.Sh SYNOPSIS
+.Cd "audiocs* at sbus? slot ? offset ?"
+.Cd "audio*  at audiocs?"
+.Sh DESCRIPTION
+The
+.Nm
+device uses the
+.Tn Crystal Semiconductor
+CS4231A
+Parallel Interface, Multimedia Audio Codec
+chip to implement the audio device interface described in
+.Xr audio 4 .
+This device is found onboard on some SBus based sparc64 models.
+.Pp
+Audio capture is currently not supported.
+The
+.Nm
+has a maximum precision of 16 bits and has both stereo and monoaural outputs.
+The output ports are: the internal speaker, line, and headphones.
+.Sh SEE ALSO
+.Xr ioctl 2 ,
+.Xr audio 4
+.Sh HISTORY
+.Ox
+support for
+.Nm
+first appeared in
+.Ox 3.0 .