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VRTC(4) Device Drivers Manual (sparc64) VRTC(4)

vrtcvirtual real-time clock

vrtc0 at vbus?

The vrtc driver provides support for the time of day service provided by the UltraSPARC Hypervisor as found on sun4v systems.

intro(4), vbus(4)

The vrtc driver first appeared in OpenBSD 4.4.

The vrtc driver was written by Mark Kettenis <>.

July 16, 2013 OpenBSD-7.0