.\" $OpenBSD: auich.4,v 1.6 2001/09/05 03:10:52 provos Exp $
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.\" Copyright (c) 2000-2001 Michael Shalayeff
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.Dd May 30, 2000
.Dt ICH 4
.Os
.Sh NAME
.Nm auich
.Nd Intel 82801AA/AB/BA and 440MX PCI audio driver
.Sh SYNOPSIS
.Cd "auich* at pci? dev ? function ?"
.Cd "audio* at auich?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the AC97-based audio present on the Intel
82801AA/AB/BA/CA I/O controller hub (ICH/ICH0/ICH2/ICH3) and 82440MX chipset.
The
.Nm
DMA engine supports full-duplex operation and has separate channels
for line input and microphone.
Unfortunately, simultaneous recording from both line and microphone inputs
is not supported due to the current
.Xr ac97 4
design.
.Sh SEE ALSO
.Xr ac97 4 ,
.Xr audio 4
.Sh HISTORY
The
.Nm
device driver appeared in
.Ox 2.8 .