72 lines
2.5 KiB
Groff
72 lines
2.5 KiB
Groff
.\" $NetBSD: vidcaudio.4,v 1.4 2004/01/18 12:53:43 bjh21 Exp $
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.\"
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.\" Copyright (c) 2003, 2004 Ben Harris
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd January 18, 2004
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.Dt VIDCAUDIO 4 acorn32
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.Os
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.Sh NAME
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.Nm vidcaudio
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.Nd VIDC audio device driver
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.Sh SYNOPSIS
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.Cd "vidcaudio0 at vidc0"
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.Cd "audio* at vidcaudio0"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the audio system of the
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.Tn ARM VIDC20
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and of the video and sound macrocell of the
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.Tn ARM7500
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and
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.Tn ARM7500FE .
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.Pp
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The driver can work in two modes, either using the internal 8-bit
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DACs of the
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.Tn VIDC20
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and its internal reference clock,
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or using the serial sound output of any supported chip
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feeding external 16-bit DACs and an external sound clock.
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On systems with a
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.Tn VIDC20 ,
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the choice of mode is based on the
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.Ql *Configure SoundSystem
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setting under
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.Tn RISC OS .
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.Sh SEE ALSO
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.Xr audio 4
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.Sh HISTORY
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The
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.Nm
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driver was introduced in
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.Nx 1.2 .
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The driver was largely rewritten for
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.Nx 2.0
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because it had bit-rotted so far as to be useless.
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.Sh AUTHORS
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The first version was written by Melvin Tang-Richardson.
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The rewrite was by Ben Harris.
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