---
name: "audiocs"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/audiocs"
---

# audiocs(4)

SPARC64 CS4231 audio device

## NAME

**audiocs** – SPARC64 CS4231 audio device

## SYNOPSIS

**audiocs\* at sbus?** **audio\*  at audiocs?**

## DESCRIPTION

The **audiocs** device uses the Crystal Semiconductor CS4231A Parallel Interface, Multimedia Audio Codec chip to implement the audio device interface described in [audio(4)](/audio/4.md). This device is found onboard on some SBus based sparc64 models. The **audiocs** has a maximum precision of 16 bits and has both stereo and monoaural outputs. The output ports are: the internal speaker, line, and headphones.

## SEE ALSO

[ioctl(2)](/ioctl/2.md), [audio(4)](/audio/4.md), [intro(4)](/intro/4.md), [sbus(4)](/sbus/4.md)

## HISTORY

OpenBSD support for **audiocs** first appeared in OpenBSD 3.0.