attimer(4) on FreeBSD
The text 241bf8cf1d2a, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
i8254 Programmable Interval Timer (AT Timer) driver
The text 241bf8cf1d2a, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
i8254 Programmable Interval Timer (AT Timer) driver