---
name: "octcit"
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/octcit"
---

# octcit(4)

OCTEON central interrupt unit version 3

## NAME

**octcit** – OCTEON central interrupt unit version 3

## SYNOPSIS

**octcit\* at fdt?**

## DESCRIPTION

The **octcit** driver provides support for the OCTEON central interrupt unit version 3 (CIU3). The CIU3 is present at least on the following system on chips:

-

  CN72xx

-

  CN73xx

-

  CN77xx

-

  CN78xx

## SEE ALSO

[octcib(4)](/octcib/4.md), [octciu(4)](/octciu/4.md)

## HISTORY

The **octcit** driver first appeared in OpenBSD 6.2.