Copyright (c) 2000-2001 Michael Shalayeff
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.Dd $Mdocdate: October 19 2008 $ .Dt AUICH 4 .Os .Sh NAME .Nm auich .Nd Intel ICH integrated AC'97 audio device .Sh SYNOPSIS .Cd "auich* at pci? flags 0x0000" .Cd "audio* at auich?" .Sh DESCRIPTION The .Nm driver provides support for the integrated AC'97 audio controller present on the Intel ICH I/O controller hub and compatible chipsets.
p Supported chipsets:
p l -bullet -compact -offset indent t AMD 768, 8111 t Intel 6300ESB/6321ESB t Intel 82440MX t Intel 82801 (ICH, ICH0, ICH2, ICH3, ICH4, ICH5, ICH6, ICH7) t NVIDIA nForce, nForce2, nForce3, nForce4 t SiS 7012 .El
p 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. Setting .Ar flags to 0x0001 will compensate for machines that have reversed stereo. .Sh SEE ALSO .Xr ac97 4 , .Xr audio 4 , .Xr intro 4 , .Xr pci 4 .Sh HISTORY The .Nm device driver appeared in .Ox 2.8 . .Sh CAVEATS Some hardware implementations only support 48kHz sampling rates.