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esa(4) [netbsd man page]

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

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 <> BSD
May 13, 2008 BSD

Check Out this Related Man Page

SND_MAESTRO(4)						   BSD Kernel Interfaces Manual 					    SND_MAESTRO(4)

snd_maestro -- ESS Maestro bridge device driver SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device sound device snd_maestro Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): snd_maestro_load="YES" DESCRIPTION
The snd_maestro bridge driver allows the generic audio driver sound(4) to attach to ESS Maestro based sound chips. This chipset is very pop- ular in notebook computers, but it is also very used in a wide selection of cheap OEM sound cards. HARDWARE
The snd_maestro driver supports the following PCI sound cards: o ESS Technology Maestro-1 o ESS Technology Maestro-2 o ESS Technology Maestro-2E SEE ALSO
snd_maestro3(4), sound(4) HISTORY
The snd_maestro device driver first appeared in FreeBSD 4.2. AUTHORS
This manual page was written by Jorge Mario G. Mazo <>. BSD
December 15, 2005 BSD
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