NAME
pninek, btcham
— Weitek Power9000 accelerated
frame buffer
SYNOPSIS
btcham0 at obio?
pninek0 at sbus?
wsdisplay* at pninek?
DESCRIPTION
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:
btcham- RAMDAC interface
pninek- 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.
SEE ALSO
BUGS
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.