grful —
8-bit color graphics driver
grful* at zbus0
grf4 at grful?
ite4 at grf4
The grful is a driver for the A2410, a TMS34010 based
  color graphics board. It supports the minimal ioctl's needed to run X11, but
  doesn't provide a mappable framebuffer, so special X servers are needed.
A standard ITE terminal emulator is supported on one of the overlay planes.
The grful interface supports the following ZorroII
  expansion card:
  - A2410
- A Zorro II only card with the TMS34010 processor. From the University of
      Lowell, manufacturer 1030, product 0.
 
  - /dev/grf4
- graphics interface special file
- /dev/grfim4
- graphics interface special file for accessing images
- /dev/grfov4
- graphics interface special file for overlays
- /dev/ttye4
- console interface special file for the internal terminal emulator
Thegrful interface first appeared in
  NetBSD 1.1.