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

NAME
     auich - ICH-based PCI audio device

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

DESCRIPTION
     The auich driver provides support for the AC'97-based audio present on
     the Intel 82801AA/AB/BA/CA/DB/EB/FB/GB I/O controller hub (ICH, ICH0,
     ICH2, ICH3, ICH4, ICH5, ICH6, ICH7), 82440MX chipset, SiS 7012, AMD 768,
     AMD 8111, NVIDIA nForce, nForce2, nForce3 and nForce4 chips.  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.

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

HISTORY
     The auich device driver appeared in OpenBSD 2.8.

CAVEATS
     Some hardware implementations only support 48kHz sampling rates.

OpenBSD 4.1                      May 30, 2000                                1
