monochromatic frame buffer
bwtwo0 at sbus0 (sun4c on-board)
bwtwo* at sbus? (sun4c/sun4e/sun4m)
bwtwo0 at obio0 addr 0xfd000000 level 4 (sun4/200)
bwtwo0 at obio0 addr 0xfb300000 level 4 (sun4/100 and
sun 4/300 P4)
wsdisplay* at bwtwo?
bwtwo is a black and white frame
buffer commonly encountered as the on-board frame buffer on sun4 and some
sun4c class workstations. It is also available as an SBus card for sun4c,
sun4e and sun4m, or as a P4 bus card for sun4 workstations.
bwtwo 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
intro(4), sbus(4), wscons(4), wsdisplay(4)