Specifications

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Schematic Editing
This chapter describes the elements of a LogicWorks circuit design and the
procedures you can use to create one.
Design Structure
What is a Design?
In LogicWorks, the term “design” refers to a complete, independent set of
circuitry, including all the information needed to display, edit, and simulate
it. The following rules outline how a design is stored:
 A single design is stored in a single file and no logical connections are
made between designs. All information required to display and edit a
design is stored in the design file.
 A design never makes reference to external library files. When a
symbol is used from a library, all information needed is read from the
library and stored with the design. Changing the original library
definition will not automatically update the design.
 A design has a top-level circuit, referred to as the master circuit. This
circuit may contain any number of devices which themselves can
contain circuits, called subcircuits. Subcircuits can be nested to any
desired depth, limited only by available memory. Many LogicWorks
operations, such as text report generation, apply only to the master
circuit.
 When a design file is opened, the entire contents of the design are read
into memory. This means that design sizes are limited by the available
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