---
name: "snd_mss"
section: "4freebsd"
platform: "linux"
package: "freebsd-manpages"
version: "12.2-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/snd_mss"
---

# snd\_mss(4freebsd)

Microsoft Sound System ISA PnP/non-PnP bridge device driver

## NAME

**snd\_mss** – Microsoft Sound System ISA PnP/non-PnP bridge device driver

## SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file:

**device sound** **device snd\_mss**

Alternatively, to load the driver as a module at boot time, place the following line in [loader.conf(5)](/loader.conf/5.md):

```
snd_mss_load="YES"
```

Non-PnP cards require the following lines in [device.hints(5)](/device.hints/5.md):

```
hint.pcm.0.at="isa"
hint.pcm.0.irq="10"
hint.pcm.0.drq="1"
hint.pcm.0.flags="0x0"
```

## DESCRIPTION

The **snd\_mss** bridge driver allows the generic audio driver, [sound(4)](/sound/4.md), to attach to the supported audio devices.

## HARDWARE

The **snd\_mss** driver supports the following audio devices:

- AD1845

- AD1848

- Aztech 2320

- CMedia CMI8330

- Crystal Semiconductor CS4231

- Crystal Semiconductor CS4232

- Crystal Semiconductor CS4234

- Crystal Semiconductor CS4235

- Crystal Semiconductor CS4236

- Crystal Semiconductor CS4237

- ENSONIQ SoundscapeVIVO ENS4081

- NeoMagic 256AV (non-AC97)

- OPTi 924

- OPTi 925

- OPTi 930

- OPTi 931

- OPTi 933

- Yamaha OPL-SA2

- Yamaha OPL-SA3

## SEE ALSO

[sound(4)](/sound/4.md)

## HISTORY

The **snd\_mss** device driver first appeared in FreeBSD 2.2.6.

## AUTHORS

This manual page was written by Joel Dahl ⟨*joel@FreeBSD.org*⟩.