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

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

NAME

     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 <jgutie11@eafit.edu.co>.

BSD
								 December 15, 2005							       BSD