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PNOZZ(4) Device Drivers Manual (sparc) PNOZZ(4)

pnozzWeitek Power9100 accelerated frame buffer

pnozz0 at sbus?
wsdisplay* at pnozz?

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.

The pnozz driver interfaces the frame buffer with the wscons(4) console framework. It does not provide direct device driver entry points but makes its functions available via the internal wsdisplay(4) interface.

If the 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.

The pnozz driver supports hardware acceleration to erase the screen and scroll text.

If the tctrl(4) device is also configured, the external video output will be enabled when an external display is connected, even if the laptop lid is closed.

intro(4), sbus(4), wscons(4), wsdisplay(4)

It is not possible yet to change display resolution or color depth.

May 31, 2011 OpenBSD-5.3