HALTWO(4) Device Drivers Manual (sgimips) HALTWO(4)

haltwo
SGI HAL2 audio controller

haltwo0 at hpc0 offset ?

haltwo is the audio controller found on the Indy and Indigo2 machines.

audio(4), sgimips/hpc(4)

The haltwo driver first appeared in NetBSD 2.0.

The driver lacks support for most mixer operations and recording.
February 17, 2017 NetBSD 9.4