1.\" $OpenBSD: ess.4,v 1.11 2008/06/26 05:42:06 ray Exp $ 2.\" $NetBSD: ess.4,v 1.6 1999/04/13 20:25:29 augustss Exp $ 3.\" 4.\" Copyright (c) 1999 The NetBSD Foundation, Inc. 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26.\" POSSIBILITY OF SUCH DAMAGE. 27.\" 28.Dd $Mdocdate: June 26 2008 $ 29.Dt ESS 4 30.Os 31.Sh NAME 32.Nm ess 33.Nd ESS Technology AudioDrive family audio device 34.Sh SYNOPSIS 35.\" .Cd "ess0 at isa? port 0x220 irq 5 drq 1 drq2 5" 36.Cd "ess* at isapnp?" 37.\" .Cd "ess* at ofisa?" 38.Cd "audio* at ess?" 39.Sh DESCRIPTION 40The 41.Nm 42driver provides support for the ESS 1788, 1888, 1887, and 888 AudioDrive 43audio devices. 44.Pp 45The AudioDrive 1788 is a half-duplex device, while the 1888, 1887, and 46888 are full-duplex. 47All are capable of 8- and 16-bit audio sample recording and playback 48at rates up to 44.1kHz. 49.Pp 50The AudioDrive takes 16 I/O ports. 51The I/O port range, IRQ, and DRQ channels are set by the driver 52to the values specified in the configuration file (or for isapnp or ofisa, 53the values assigned from the firmware). 54The I/O port base must be one of 0x220, 0x230, 0x240, 550x250. 56The IRQ must be one of 5, 7, 9, 10 (or 15 on the 1887 only). 57The first DRQ channel must be selected from 0, 1, 3. 58The second DRQ channel (used for playback by the full-duplex 1888/1887, ignored 59by the 1788) can additionally be set to 5. 60If both DRQ channels are used they must be different. 61.Pp 62The joystick interface (if enabled) is handled by the 63.Xr joy 4 64driver. 65.Sh SEE ALSO 66.Xr audio 4 , 67.Xr intro 4 , 68.\" .Xr isa 4 , 69.Xr isapnp 4 , 70.Xr joy 4 , 71.Xr sb 4 72.Sh HISTORY 73The 74.Nm 75device driver appeared in 76.Ox 2.2 . 77.Sh BUGS 78The AudioDrive devices have a SoundBlaster compatibility mode, and may 79be detected by the SoundBlaster driver (see 80.Xr sb 4 ) 81rather than the AudioDrive driver. 82The workaround is to remove or disable the SoundBlaster driver from the kernel 83configuration. 84