asms(4)

asms4

Apple sudden motion sensor

Usage

asms* at iic?

Overview

The asms driver provides support for the Apple sudden motion sensor found in some laptops.

The sensors currently exposed via the sysctl(8) interface are:

SensorUnitsTypical Use
X_ACCELUnknownX Acceleration
Y_ACCELUnknownY Acceleration
Z_ACCELUnknownZ Acceleration

Hardware

Machines supported by the asms driver include:

  • PowerBook5,6

  • PowerBook6,7

  • PowerBook6,8

History

The asms driver first appeared in OpenBSD 3.9.

Authors

The asms driver was written by Xavier Santolaria ⟨[email protected]⟩.

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.