NAME    [Toc]    [Back]

     rbox - HP98720 ``Renaissance'' frame buffer

DESCRIPTION    [Toc]    [Back]

     The HP98720 and HP98721  are  stackable  4-bit  color  frame
buffers, also
     known  as the Renaissance.  By adding up to 7 HP98722A frame
buffer extensions,
 it is possible to add overlay planes.

     The rbox driver provides a frame buffer abstraction  to  the
grf(4) driver,
     and the associated ite(4) console framework.

     The Renaissance can be configured at either the ``internal''
address
     (frame buffer address 0x200000, control register  space  address 0x560000)
     or at an external select code less than 32.  At the internal
address it
     will be the ``preferred'' console device (see cons(4)).  The
hardware installation
  manual describes the procedure for setting these
values.

SEE ALSO    [Toc]    [Back]

     ioctl(2), dvbox(4),  gbox(4),  grf(4),  hyper(4),  intro(4),
topcat(4)

BUGS    [Toc]    [Back]

     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