Manual page for S3 SonicVibes driver

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+.\" $OpenBSD: sv.4,v 1.1 1998/07/13 04:27:51 csapuntz Exp $
+.\" Copyright (c) 1998 Constantine Paul Sapuntzakis
+.\" All rights reserved
+.\"
+.\" Author: Constantine Paul Sapuntzakis (csapuntz@cvs.openbsd.org)
+.\"
+.\" 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. The author's name or those of the contributors may be used to
+.\"    endorse or promote products derived from this software without 
+.\"    specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS
+.\" ``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 FOUNDATION OR CONTRIBUTORS
+.\" 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 July 13, 1998
+.Dt SV 4
+.Os
+.Sh NAME
+.Nm sv
+.Nd S3 SonicVibes device driver
+.Sh SYNOPSIS
+.Cd "sv* at pci? dev ? function ?"
+.Cd "audio* at sv?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support S3 SonicVibes (S3-617) chipset-based
+cards. Disabling the SRS 3-D spatial feature of the chip is
+recommended for higher quality audio. This can be done in software
+by issuing the 
+.Bd -literal -offset indent
+mixerctl -w outputs.spatial=off
+.Ed
+
+command.
+
+.Sh BUGS
+The "FM" DAC, wavetable synth, and MIDI port are not
+supported. Recording at a rate different from playback is supported by
+the chip but not the driver. The mixer does not allow control of reverb,
+digital loopback, or 3-D SRS features. The chip does not support exact
+record speeds (it seems) of 11025hz, 22050hz, and so on, used by
+Windows audio. Usually, the actual record is rate is around +/- 50hz of
+the specified.
+.Sh SEE ALSO
+.Xr audio 4 ,
+.Xr mixer 4
+.Sh HISTORY
+This driver is based on the eap driver by Lennart Augustsson.
+The
+.Nm
+device driver appeared in
+.Nx 1.4 .