rbox - HP98720 ``Renaissance'' frame buffer
The HP98720 and HP98721 are stackable 4-bit color frame
known as the Renaissance. By adding up to 7 HP98722A frame
it is possible to add overlay planes.
The rbox driver provides a frame buffer abstraction to the
and the associated ite(4) console framework.
The Renaissance can be configured at either the ``internal''
(frame buffer address 0x200000, control register space address 0x560000)
or at an external select code less than 32. At the internal
will be the ``preferred'' console device (see cons(4)). The
manual describes the procedure for setting these
ioctl(2), dvbox(4), gbox(4), grf(4), hyper(4), intro(4),
This driver has not been tested with all possible combinations of frame
buffer boards and scan boards installed in the device.
OpenBSD 3.6 March 16, 2003
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