ESL(4)

NAME
esl - ESS Technology AudioDrive (Programmed I/O mode) family audio device driver

SYNOPSIS
esl* at pcmcia? function ?
audio* at audiobus?
opl* at esl?

DESCRIPTION
The esl driver provides support for the ESS 1688 AudioDrive audio devices on a PCMCIA card.

Since there is no way to do DMA over the PCMCIA bus, the esl driver uses a Programmed I/O mode to drive the cards. This is very inefficient, but is the only way to drive such a card.

Cards supported by this driver are capable of 8- and 16-bit audio sample playback at rates up to 44.1kHz.

SEE ALSO
audio(4), midi(4), opl(4), pcmcia(4)

HISTORY
The esl device driver appeared in NetBSD 1.6.

AUTHORS
Jared D. McNeill <jmcneill@invisible.ca>

BUGS
Putting a machine into suspend mode while this driver is active will cause the machine to freeze.

Recording is not yet supported by this driver.