ESM(4) | Device Drivers Manual | ESM(4) |
esm
— ESS
Technology Maestro 2/2E PCI Audio Accelerator audio device driver
esm* at pci? dev ? function ?
audio* at audiobus?
The esm
device driver supports sound cards
based on ESS Technology Maestro, Maestro-2, and Maestro-2E PCI AC97 Audio
Accelerator chips (ES1968 and ES1978). Due to their power management
capabilities, the Maestro chips are often used in laptop and notebook
systems.
The Maestro is a full-duplex device that allows independent playback and recording at sample rates between 4000 Hz and 48 kHz. The sound processor is capable of handling and converting 8 and 16 bit mono and stereo data.
The esm
device driver appeared in
NetBSD 1.6.
Currently, this driver only supports 16-bit mono recording; an unknown bug causes stereo recording to miss a channel. Also not supported yet are hardware volume settings, MIDI, and joystick input.
June 22, 2005 | NetBSD 10.99 |