esa(4) [netbsd man page]

ESA(4)							   BSD Kernel Interfaces Manual 						    ESA(4)

NAME

     esa -- ESS Technology Allegro-1 / Maestro-3 family audio device driver

SYNOPSIS

     esa*   at pci? dev ? function ?
     audio* at audiobus?
     options ESA_NUM_VOICES=4

DESCRIPTION

     The esa driver provides support for the ESS Allegro-1 and Maestro-3 audio devices on the PCI bus.	These devices are popular in laptop sys-
     tems.

     The Allegro-1 and the Maestro-3 are full-duplex devices that allow independent playback and recording at sample rates between 8000Hz and
     48000Hz and are capable of playback at 8 and 16 bit in mono and stereo.

     Setting options ESA_NUM_VOICES=4 allows for hardware mixing in the device driver.	Note that due to microcode constraints, the esa driver is
     currently limited to 4 simultaneous voices.

SEE ALSO

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

HISTORY

     The esa device driver appeared in NetBSD 1.5.3.

AUTHORS

     Jared D. McNeill <jmcneill@invisible.ca>

BSD
								   May 13, 2008 							       BSD

EAP(4)							   BSD Kernel Interfaces Manual 						    EAP(4)

NAME

     eap -- AudioPCI audio device driver

SYNOPSIS

     eap*   at pci? dev ? function ?
     audio* at audiobus?
     joy*   at eap?
     midi*  at eap?
     options EAP_USE_BOTH_DACS

DESCRIPTION

     The eap driver provides support for the Ensoniq AudioPCI and Creative Labs SoundBlaster PCI series of audio cards.  All models based on the
     ES1370, ES1371, and ES1373 chips are supported.

     By specifying:

	   options EAP_USE_BOTH_DACS

     a second audio device is attached.  You can use it simply by directing audio output to it.  This way it is possible for two different pro-
     grams to use the "same" audio device simultaneously.

SEE ALSO

     ac97(4), audio(4), joy(4), midi(4), pci(4)

HISTORY

     The eap device driver appeared in NetBSD 1.4.

CAVEATS

     The joystick port hardware works by emulating a legacy isa(4) joystick port, bypassing the pci(4) bus method for address allocation.  This is
     unlikely to work on PCI busses other than the primary one.  There is also a possibility for conflicts with real ISA devices because the PCI
     bus is probed before ISA.	Use with caution.

BSD
								   July 22, 2006							       BSD