ESA(4) | Device Drivers Manual | ESA(4)

# NAME

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

# SYNOPSIS

`esa* at pci?`
`audio* at esa?`

# 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 systems.

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.

# SEE ALSO

ac97(4), audio(4), intro(4), maestro(4), pci(4)

# HISTORY

The `esa` device driver appeared in OpenBSD 3.1.

# AUTHORS

Jared D. McNeill <jmcneill@invisible.ca>

# BUGS

Hardware volume control is not yet supported by this driver.

July 16, 2013 | Debian