pnozz —
Weitek Power9100 accelerated frame buffer
pnozz0 at sbus? slot ? offset ?
The pnozz is a color frame buffer with graphics
  acceleration, embedded in the Tadpole SPARCbook 3GS, 3GX, 3TX, and 3XP
  laptops. It is based on the Weitek Power9100 video processor and an IBM RGB525
  RAMDAC.
If the
    sparc/tctrl(4) device
    is also configured, the pnozz will be powered down
    when the lid of the laptop is closed or the screen is blanked.
Support for the pnozz first appeared in
  NetBSD 1.6.
There is currently no way to switch back and forth from the onboard display to
  the external connector. It is not possible to change resolutions or color
  depth.