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transparent
touch-sensitive
element
two-color
LED display
FPGA
reconfigurable
circuit
connections
to neighboring
cells
Fig. 2.
The basic cell of the interactive reconfigurable computing tissue.
capable of interacting with its environment by means of a large number of touch-
sensitive elements coupled with two color light-emitting diode (LED) displays.
Figure 1shows the 80
×
25 = 2000 cells of its hardware implementation. Each cell
is made up of a transparent touch-sensitive element, a two-color 8
×
8 dot-matrix
LED display, and a reconfigurable Xilinx Spartan XCS10XL FPGA circuit (Fig-
ure 2). Within the cell, the transparent touch-sensitive element and the LED
display are physically joined by an adhesive film. As each of the cells provides
the same connections to its four neighbors, the BioWall is homogeneous and fully
scalable.
0: empty component
1: building component
2: east-moving signal
3: north-moving signal
4: west-moving signal
5: south-moving signal
6: left-turn signal
7: activated left-turn signal
8: first east-branching signal
9: second east-branching signal
10: first north-branching signal
11: second north-branching signal
12: first west-branching signal
13: second west-branching signal
14: first south-branching signal
15: second south-branching signal
Fig. 3.
The seven basic cellular states 0to 6 used for the idle loop and the nine
additional cellular states 8 to 15 involved in the self-replication and self-destruction
processes.
