---
name: "viocon"
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/viocon"
---

# viocon(4)

VirtIO console device

## NAME

**viocon** – VirtIO console device

## SYNOPSIS

**viocon\* at virtio?**

## DESCRIPTION

The **viocon** driver provides support for the [virtio(4)](/virtio/4.md) console interface provided by KVM, QEMU, and others.

It provides serial ports that are attached as ttys. Use as a kernel console for OpenBSD is not yet supported. The multiport feature is not yet supported.

## FILES

- */dev/ttyVI00*

  - */dev/ttyVI10*

  - */dev/ttyVI20*

  - */dev/ttyVI30*

  - */dev/ttyVI40*

  ## SEE ALSO

[intro(4)](/intro/4.md), [tty(4)](/tty/4.md), [virtio(4)](/virtio/4.md)

## HISTORY

The **viocon** driver first appeared in OpenBSD 5.9.

## AUTHORS

The **viocon** driver was written by Stefan Fritsch ⟨*sf@sfritsch.de*⟩.