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Introduction
This chapter describes how GM VHDL can be used to model the operation of
digital hardware designs. GM VHDL supports three techniques of modeling
the operation of a design
- structural
- This technique describes how components
(an and gate, for example) can be interconnected to model a design.
- data flow
- Like register transfer languages, this technique specifies
how data flows from the input signals to the output signals.
- behavioral
- A design using this technique would represent the design
as a sequential algorithm that computes the outputs of the design from the
inputs.
All of these techniques can also be used together in a single design.
The following three sections describe how a one-bit half adder could be
modeled differently using the three different modeling techniques.
Structural
Data Flow
Behavioral
Discrete event simulation