This was a highly specilized board to utilize a supermarket type bar code
reader.
The board utilizes the NEC
7220/lntel 82720 Graphics display Controller with 64K of RAM which, in
hardware, generates lines, arcs, rectangles and graphics characters at high
speed and provides for programmable display resolutions up to 512 x 512
pixels. Four planes of local video memory and a color mapper
allow the selection of 16 colors
from
a palette of 4096 colors, and each plane can be partitioned into multiple
frame buffers. There could be two independently scrollable areas, panned and
had a zoom feature. Communications to the board could be via I/O ports
or memory mapped.
Applications for the board
included presentation-level graphics, wire-frame animation and computer
aided design.
The brochure for this board can be obtained
here.
I do not have a manual for this board. If you would like to share one please
let me know.
