NAME
pnozz —
Weitek Power9100 accelerated frame
buffer
SYNOPSIS
pnozz0 at sbus?
wsdisplay* at pnozz?
DESCRIPTION
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.
EXTERNAL VIDEO
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.
SEE ALSO
BUGS
It is not possible yet to change display resolution or color depth.