NAME    [Toc]    [Back]

     dvbox - HP98730 ``DaVinci'' frame buffer

SYNOPSIS    [Toc]    [Back]

     dvbox* at intio?
     dvbox* at dio? scode ?
     grf*   at dvbox?

DESCRIPTION    [Toc]    [Back]

     The HP98730 and HP98731  are  stackable  4-bit  color  frame
buffers, also
     known  as  the  DaVinci.   By  adding up to 7 HP98732A frame
buffer extensions,
 it is possible to add overlay planes.

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

     The DaVinci 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), gbox(4), grf(4), hyper(4), intro(4), rbox(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