1.\" $NetBSD: ess.4,v 1.12 2002/07/05 04:02:14 nathanw Exp $ 2.\" 3.\" Copyright (c) 1999 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the NetBSD 17.\" Foundation, Inc. and its contributors. 18.\" 4. Neither the name of The NetBSD Foundation nor the names of its 19.\" contributors may be used to endorse or promote products derived 20.\" from this software without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32.\" POSSIBILITY OF SUCH DAMAGE. 33.\" 34.Dd February 18, 1999 35.Dt ESS 4 36.Os 37.Sh NAME 38.Nm ess 39.Nd ESS Technology AudioDrive family audio device driver 40.Sh SYNOPSIS 41.Cd "ess* at isapnp?" 42.Cd "ess* at pnpbios? index ?" 43.Cd "ess* at ofisa?" 44.Cd "audio* at ess?" 45.Cd "opl* at ess?" 46.Sh DESCRIPTION 47The 48.Nm 49driver provides support for the ESS 1788, 1888, 1887, and 888 AudioDrive 50audio devices. 51.Pp 52The AudioDrive 1788 is a half-duplex device, while the 1888, 1887, and 53888 are full-duplex. All are capable of 8- and 16-bit audio sample 54recording and playback at rates up to 44.1kHz. 55.Pp 56The AudioDrive takes 16 I/O ports. The I/O port range, IRQ, and DRQ 57channels are set by the driver to the values specified in the 58configuration file (or for isapnp, pnpbios, or ofisa, the values 59assigned from the firmware). 60The I/O port base must be one of 0x220, 0x230, 0x240, 610x250. The IRQ must be one of 5, 7, 9, 10 (or 15 on the 1887 62only). The first DRQ channel must be selected from 0, 1, 3. The second 63DRQ channel (used for playback by the full-duplex 1888/1887, ignored 64by the 1788) can additionally be set to 5. If both DRQ channels are 65used they must be different. 66.Pp 67The joystick interface (if enabled) is handled by the 68.Xr joy 4 69driver. 70.Sh SEE ALSO 71.Xr audio 4 , 72.Xr isapnp 4 , 73.Xr joy 4 , 74.Xr ofisa 4 , 75.Xr opl 4 , 76.Xr pnpbios 4 77.Sh HISTORY 78The 79.Nm 80device driver appeared in 81.Nx 1.4 . 82.Sh BUGS 83The AudioDrive devices have a SoundBlaster compatibility mode, and may 84be detected by the SoundBlaster driver (see 85.Xr sb 4 ) 86rather than the AudioDrive driver. The workaround is to remove the 87SoundBlaster driver from the kernel configuration. 88