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

# vcc(4)

virtual console concentrator

## NAME

**vcc**, **vcctty** – virtual console concentrator

## SYNOPSIS

**vcc\* at cbus?** **vcctty\* at vcc?**

## DESCRIPTION

The **vcc** driver provides access to the consoles of guest domains from the control domain of sun4v systems. It provides a standard [tty(4)](/tty/4.md) interface on top of a logical domain channel provided by the UltraSPARC Hypervisor.

## FILES

- /dev/ttyV\[0-9a-zA-Z\]

  ## SEE ALSO

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

## HISTORY

The **vcc** driver first appeared in OpenBSD 4.6.

## AUTHORS

The **vcc** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.