Creating a Schematic Symbol
symbol is used to instantiate a module in a schematic design. You
can create a schematic symbol from an HDL, CORE Generator™ core, Architecture Wizard IP,
or schematic source file. After the symbol is created, you must instantiate
the source file in the schematic design by placing the symbol in a
schematic. The source file represented by the symbol must be added
to the project separately.
For CORE Generator cores created within
the ISE® project, a symbol file is automatically
created during core generation, and you do not need to use this process.
To create a schematic symbol for an EDIF or NGC/NGO file, you must
use Xilinx® command line programs instead. For more information,
see Generating a Symbol from an EDIF or NGC File
To Create a Schematic Symbol
- In the Design panel, select Implementation from the Design View drop-down list.
- In the Hierarchy pane, select the source file that contains
the design module for which you want to create a schematic symbol.
- In the Processes pane, expand Design
Utilities, and double-click Create Schematic
The symbol is created and is available in your project
directory. Symbols are not allowed to have pin
names beginning with the characters B_. If the module contains pin
names beginning with this sequence, an error will be reported and
the symbol generated will not be complete.
For more information on
working with schematics, see the Schematic and Symbol Editors Help
. In the Help Viewer, click the Synchronize TOC
button to view all
related Help topics.
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