---
name: "acpihpet"
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/acpihpet"
---

# acpihpet(4)

ACPI high precision event timer

## NAME

**acpihpet** – ACPI high precision event timer

## SYNOPSIS

**acpihpet\* at acpi?**

## DESCRIPTION

The **acpihpet** driver provides support for the high precision event timer to be used as a timecounter for the tc\_init(9) framework.

## SEE ALSO

[acpi(4)](/acpi/4.md), [intro(4)](/intro/4.md), tc\_init(9)

## HISTORY

The **acpihpet** driver first appeared in OpenBSD 3.8.

## AUTHORS

The **acpihpet** driver was written by Thorsten Lockert ⟨*tholo@sigmasoft.com*⟩.