speaker(4) on FreeBSD
The text ba6f1f2b3e41, as FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE shipped it.
console speaker device driver
The text ba6f1f2b3e41, as FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE shipped it.
console speaker device driver