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ACPITIMER(4) Device Drivers Manual ACPITIMER(4)

acpitimerACPI power management timer

acpitimer* at acpi?

The acpitimer driver allows access to a power management timer through ACPI. The timer is used as a timecounter for the tc_init(9) framework.

acpi(4), intro(4), tc_init(9)

The acpitimer driver first appeared in OpenBSD 3.8.

The acpitimer driver was written by Thorsten Lockert <>.

July 16, 2013 OpenBSD-5.8