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PNINEK(4) Device Drivers Manual (sparc) PNINEK(4)

pninek, btchamWeitek Power9000 accelerated frame buffer

btcham0 at obio?
pninek0 at sbus?
wsdisplay* at pninek?

The pninek is a color frame buffer with graphics acceleration, embedded in the Tadpole SPARCbook 3 laptop. It is based on the Weitek Power9000 video processor and a Brooktree Bt445 ‘Chameleon’ RAMDAC.

Due to specifics of the video hardware on the Tadpole SPARCbook 3, the complete driver is split in two parts:

RAMDAC interface
Video controller interface

The combination of both btcham and pninek drivers interfaces the frame buffer with the wscons(4) console framework. They do not provide direct device driver entry points but make their function available via the internal wsdisplay(4) interface.

If the tctrl(4) device is also configured, the pninek will be powered down when the lid of the laptop is closed or the screen is blanked.

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

There is currently no way to switch back and forth from the onboard display to the external connector.

It is not possible to change display resolution.

Acceleration code does not work correctly, and is therefore disabled.

November 21, 2015 OpenBSD-6.0