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

NAME
     emu - Creative Labs SBLive!, PCI 512, and Audigy audio device

SYNOPSIS
     emu* at pci?
     audio* at emu?

DESCRIPTION
     The emu device driver supports Creative Labs SoundBlaster Live!, Sound
     Blaster PCI 512, and SoundBlaster Audigy cards.

     These Environmental Audio cards are based upon the programmable EMU10K1
     digital-processing chip.

     Hardware features:

           o   E-mu Systems, Inc. EMU10K1 music synthesis engine

           o   64-voice hardware polyphony with E-mu's patented 8-point inter-
               polation technology

           o   Up to 1024-voice polyphony with multi-timbre capability

           o   Support for real-time digital effects like reverb, chorus,
               flanger, pitch shifter, or distortion across any audio source

           o   User-selectable settings are optimized for headphones, two or
               four speakers

           o   Processes sample rates from 5kHz to 48kHz

           o   Creative Multi Speaker Surround (CMSS) places any mono or
               stereo sound source in a 360 degree audio space

           o   Hardware full-duplex support enables simultaneous record and
               playback at 8 standard sample rates

           o   Allows multiple audio sources playback on the same speaker sys-
               tem

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

HISTORY
     The emu device driver appeared in OpenBSD 3.1.

AUTHORS
     The emu driver was written by Yannick Montulet
     <yannick.montulet@epitech.net> and ported to OpenBSD 3.1 by Michael
     Shalayeff <mickey@openbsd.org>.

CAVEATS
     ATTENTION!

     The hardware interface of this card contains registers not used for nor-
     mal operation, but potentially dangerous and not possible to disable.
     Potential damage ranges from frying the card to frying motherboard or ex-
     ternal equipment connected to its outputs.

BUGS
     Currently this driver does not support MIDI, joystick input, or the mul-
     ti-voice capability.

     There is currently no way to control the volume of the DAC for Sound-
     Blaster Audigy cards.

     S-PDIF digital output does not work for SoundBlaster Live! and Sound-
     Blaster Audigy cards.

OpenBSD 4.7                      June 26, 2008                               2
