1.\" $OpenBSD: auich.4,v 1.5 2001/07/31 00:39:07 deraadt Exp $ 2.\" 3.\" Copyright (c) 2000-2001 Michael Shalayeff 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. The author's name or those of the contributors may not be used to 15.\" endorse or promote products derived from this software without 16.\" specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR 25.\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 26.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 27.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 28.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd May 30, 2000 31.Dt ICH 4 32.Os 33.Sh NAME 34.Nm auich 35.Nd Intel 82801AA/AB/BA and 440MX PCI audio driver 36.Sh SYNOPSIS 37.Cd "auich* at pci? dev ? function ?" 38.Cd "audio* at auich?" 39.Sh DESCRIPTION 40The 41.Nm 42driver provides support for the AC97-based audio present on the Intel 4382801AA/AB/BA I/O controller hub (ICH/ICH0/ICH2) and 82440MX chipset. 44The 45.Nm 46DMA engine supports full-duplex operation and has separate channels 47for line input and microphone. 48Unfortunately, simultaneous recording from both line and microphone inputs 49is not supported due to the current 50.Xr ac97 4 51design. 52.Sh SEE ALSO 53.Xr ac97 4 , 54.Xr audio 4 55.Sh HISTORY 56The 57.Nm 58device driver appeared in 59.Ox 2.8 . 60