Specifications

Editing Device Symbols 147
IMPORTANT: The procedure given here allows you to produce a symbol with only the
simplest graphical and netlisting requirements. Details of creating the symbol and
the various settings that may be required for specific applications are covered in later
sections of this manual, and in other chapters on specific LogicWorks functions: You
may wish to refer to any of the following sections:
 For details on the drawing tools available for creating symbols, see
“Drawing the Graphics and Placing Pins on the Subcircuit Symbol” on
page 169.
 For information on the general entry of part and pin attributes, see “Setting
Part and Pin Attributes” on page 152.
 For pin settings and how they may affect simulation or netlists, see “Step
3—Setting Pin Information” on page 144.
 For information on creating symbols for hierarchical blocks, see “Creating a
Subcircuit—Top–Down” on page 55.
 For information on creating pseudo-device symbols, see “Creating a Power
and Ground (Signal) Connector” on page 172 and the sections that follow it.
Editing an Existing Part in a Library
To edit an existing part in a library:
 Right-click on the desired item in the Parts palette, then select “Edit
Part” from the pop-up menu.
In response to either of these operations, a copy of the symbol definition is
loaded into a device symbol editor window. No changes to the source
library will be made until you save the symbol back to its original library.
NOTE: Editing a symbol in a library does not automatically update designs that
have used that symbol. For more information, see “Circuits and Libraries”
on page 136.
Closing the Device Symbol Editor Window
An open device symbol editor window can be closed by either clicking in the
close box at the upper left corner or selecting the Close command in the File
menu. If any changes have been made to the open part, you will be prompted to
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