esl(4) - NetBSD Manual Pages

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ESL(4)                    NetBSD Programmer's Manual                    ESL(4)

esl - ESS Technology AudioDrive (Programmed I/O mode) family audio device
esl* at pcmcia? function ? audio* at esl? opl* at esl?
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.
audio(4), midi(4), opl(4), pcmcia(4)
The esl device driver appeared in NetBSD 1.6.
Jared D. McNeill <>
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. NetBSD 1.6.2 July 20, 2001 1
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