2003-04-16 13:07:05 +04:00
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.\" $NetBSD: esl.4,v 1.4 2003/04/16 09:07:05 wiz Exp $
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2001-09-29 22:46:16 +04:00
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.\"
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.\" Copyright (c) 2001 Jared D. McNeill <jmcneill@invisible.yi.org>
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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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Jared D. McNeill.
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.\" 4. Neither the name of the author nor the names of any
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd July 20, 2001
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.Dt ESL 4
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.Os
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.Sh NAME
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.Nm esl
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.Nd ESS Technology AudioDrive (Programmed I/O mode) family audio device driver
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.Sh SYNOPSIS
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.Cd "esl* at pcmcia? function ?"
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.Cd "audio* at esl?"
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.Cd "opl* at esl?"
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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 ESS 1688 AudioDrive audio devices on a
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PCMCIA card.
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.Pp
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2003-04-16 13:07:05 +04:00
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Since there is no way to do DMA over the PCMCIA bus, the
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2001-09-29 22:46:16 +04:00
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.Nm
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driver uses a Programmed I/O mode to drive the cards. This is very
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inefficient, but is the only way to drive such a card.
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.Pp
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Cards supported by this driver are capable of 8- and 16-bit audio sample
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2001-09-30 04:02:03 +04:00
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playback at rates up to 44.1kHz.
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2001-09-29 22:46:16 +04:00
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.Sh SEE ALSO
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.Xr audio 4 ,
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2001-09-30 04:02:03 +04:00
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.Xr midi 4 ,
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2001-09-29 22:46:16 +04:00
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.Xr opl 4 ,
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2001-09-30 04:02:03 +04:00
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.Xr pcmcia 4
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2001-09-29 22:46:16 +04:00
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.Sh HISTORY
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The
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.Nm
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device driver appeared in
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.Nx 1.6 .
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2001-09-30 04:02:03 +04:00
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.Sh AUTHORS
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.An Jared D. McNeill Aq jmcneill@invisible.yi.org
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.Sh BUGS
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Putting a machine into suspend mode while this driver is active will
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cause the machine to freeze.
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.Pp
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Recording is not yet supported by this driver.
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