1.\" $OpenBSD: esa.4,v 1.9 2013/07/16 16:05:48 schwarze Exp $ 2.\" $NetBSD: esa.4,v 1.4 2002/01/24 22:24:19 he Exp $ 3.\" 4.\" Copyright (c) 2001, 2002 Jared D. McNeill <jmcneill@invisible.ca> 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. Neither the name of the author nor the names of any 13.\" contributors may be used to endorse or promote products derived 14.\" from this software without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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: July 16 2013 $ 29.Dt ESA 4 30.Os 31.Sh NAME 32.Nm esa 33.Nd ESS Technology Allegro-1/Maestro-3 family audio device 34.Sh SYNOPSIS 35.Cd "esa* at pci?" 36.Cd "audio* at esa?" 37.Sh DESCRIPTION 38The 39.Nm 40driver provides support for the ESS Allegro-1 and Maestro-3 audio devices 41on the PCI bus. 42These devices are popular in laptop systems. 43.Pp 44The Allegro-1 and the Maestro-3 are full-duplex devices that allow 45independent playback and recording at sample rates between 8000Hz and 4648000Hz and are capable of playback at 8 and 16 bit in mono and stereo. 47.Sh SEE ALSO 48.Xr ac97 4 , 49.Xr audio 4 , 50.Xr intro 4 , 51.Xr maestro 4 , 52.Xr pci 4 53.Sh HISTORY 54The 55.Nm 56device driver appeared in 57.Ox 3.1 . 58.Sh AUTHORS 59.An Jared D. McNeill Aq Mt jmcneill@invisible.ca 60.Sh BUGS 61Hardware volume control is not yet supported by this driver. 62