---
name: "cgtwelve"
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/cgtwelve"
---

# cgtwelve(4)

accelerated 24-bit color frame buffer

## NAME

**cgtwelve** – accelerated 24-bit color frame buffer

## SYNOPSIS

**cgtwelve\* at sbus?** **wsdisplay\* at cgtwelve?**

## DESCRIPTION

The **cgtwelve** is a triple-slot SBus color frame buffer, with graphics acceleration and overlay capabilities.

The **cgtwelve** driver interfaces the frame buffer with the [wscons(4)](/wscons/4.md) console framework. It does not provide direct device driver entry points but makes its functions available via the internal [wsdisplay(4)](/wsdisplay/4.md) interface.

## SEE ALSO

[intro(4)](/intro/4.md), [sbus(4)](/sbus/4.md), [wscons(4)](/wscons/4.md), [wsdisplay(4)](/wsdisplay/4.md)

## CAVEATS

The only way to connect a **cgtwelve** frame buffer to an UltraSPARC is with the help of an [xbox(4)](/xbox/4.md) SBus Expansion subsystem.

This driver does not support any acceleration features.