auich man page on OpenBSD

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AUICH(4)		  OpenBSD Programmer's Manual		      AUICH(4)

     auich - Intel ICH integrated AC'97 audio device

     auich* at pci? flags 0x0000
     audio* at auich?

     The auich driver provides support for the integrated AC'97 audio
     controller present on the Intel ICH I/O controller hub and compatible

     Supported chipsets:

	   o   AMD 768, 8111
	   o   Intel 6300ESB/6321ESB
	   o   Intel 82440MX
	   o   Intel 82801 (ICH, ICH0, ICH2, ICH3, ICH4, ICH5, ICH6, ICH7)
	   o   NVIDIA nForce, nForce2, nForce3, nForce4
	   o   SiS 7012

     The auich 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 ac97(4) design.  Setting flags to 0x0001 will compensate for
     machines that have reversed stereo.

     ac97(4), audio(4), intro(4), pci(4)

     The auich device driver appeared in OpenBSD 2.8.

     Some hardware implementations only support 48kHz sampling rates.

OpenBSD 4.9		       February 25, 2010		   OpenBSD 4.9

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