ToPoliNano: NanoMagnet Logic Circuits Design and Simulation - Field-Coupled Nanocomputing: Paradigms, Progress, and Perspectives - page 292

5.3 Magnetization Evaluation

During the matrix exploration the magnetization of every magnet is calculated
according to the value of its neighbors, as shown in Fig. 20 . The state of every
magnets is calculated by the weighted sum of its neighbors.

X X

012 34 012 34

Y Y

0 0

1 1

?

2 2

3 3

4 4

Fig. 20. Magnetization evaluation. The state of a magnet is calculated as a weighted
sum of its neighbor elements.

6 Library Generator

The library generator is a tool that, together with the main application of ToPoli-
Nano, allows the designer to describe new elementary components in order to
be used within the internal library of the simulator. Its structure is shown in
Fig. 21 .
The library generator creates new components that can be used in ToPoli-
Nano. However to create a component it needs three kind of information:

- Ports which contains information on the input/output pins. Every pin is iden-
tified by three parameters:
￿ Direction: Input or Output.

￿ Type: Standard Logic, Standard Logic Vector. This is required for compat-

ibility with VHDL code, so that the created component can be identified
by the parser.

￿

Position within the circuit.
- Layout which contains information on the space occupied by the circuit.
- Element Description which contains the circuit layout, the gates which com-
pose it and their position on the plane.