esa —
ESS Technology Allegro-1/Maestro-3 family audio device
esa* at pci?
audio* at esa?
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.
The esa device driver appeared in
OpenBSD 3.1.
Hardware volume control is not yet supported by this driver.