84 lines
3.4 KiB
Groff
84 lines
3.4 KiB
Groff
.\" $NetBSD: ess.4,v 1.5 1999/03/16 01:19:16 garbled Exp $
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.\"
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.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
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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 the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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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 NETBSD FOUNDATION, INC. 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 February 18, 1999
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.Dt ESS 4
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.Os
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.Sh NAME
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.Nm ess
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.Nd ESS Technology AudioDrive family audio device driver
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.Sh SYNOPSIS
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.Cd "ess0 at isa? port 0x220 irq 5 drq 1 drq2 5"
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.Cd "ess* at isapnp?"
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.Cd "ess* at ofisa?"
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.Cd "audio* at ess?"
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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 1788, 1888, 1887, and 888 AudioDrive
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audio devices.
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.Pp
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The AudioDrive 1788 is a half-duplex device, while the 1888, 1887, and
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888 are full-duplex. All are capable of 8- and 16-bit audio sample
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recording and playback at rates up to 44.1kHz.
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.Pp
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The AudioDrive takes 16 I/O ports. The I/O port range, IRQ, and DRQ
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channels are set by the driver to the vaues specified in the
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configuration file (or for isapnp or ofisa, the values assigned from
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the firmware). The I/O port base must be one of 0x220, 0x230, 0x240,
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0x250. The IRQ must be one of 5, 7, 9, 10 (or 15 on the 1887
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only). The first DRQ channel must be selected from 0, 1, 3. The second
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DRQ channel (used for playback by the full-duplex 1888/1887, ignored
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by the 1788) can additionally be set to 5. If both DRQ channels are
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used they must be different.
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.Pp
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The joystick interface (if enabled) is handled by the
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.Xr joy 4
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driver.
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.Sh BUGS
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The AudioDrive devices have a SoundBlaster compatibility mode, and may
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be detected by the SoundBlaster driver (see
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.Xr sb 4 )
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rather than the AudioDrive driver. The workaround is to remove the
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SoundBlaster driver from the kernel configuration.
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.Sh SEE ALSO
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.Xr audio 4 ,
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.Xr isa 4 ,
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.Xr isapnp 4 ,
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.Xr joy 4
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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 1.4 .
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