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Virtuoso Schematic Composer User Guide

Form Descriptions

Edit Object Properties Form – Wire Name

You use the Previous and Next buttons along with the Apply To options below to locate objects in your design window. When there are multiple objects in the selected set, you use the Next and Previous buttons to locate objects in the set. You use the Apply To options to specify the objects the software changes.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Apply To consists of up to three cyclic fields that you use to specify the object, or group of objects in a selected set, whose properties you want to change. The software uses one color to highlight selected objects. But when there are multiple objects in the selected set, the software uses a second color to highlight the current object. And when you configure the cyclic fields to apply changes to multiple objects, the software uses a third color to highlight all the affected objects.

Selection scope specifies whether you want to edit only the current object, only the selected objects in the specified object type group, or all the objects in the specified object type group (which includes both selected and unselected objects of the specified object type).

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Object filter appears only when the selection scope is set to all selected or all. This option acts as a secondary filter for further limiting the selection scope. The options vary depending on the selected object type.

Attachment performs two functions.

When the Label entry is already associated with an object, the software highlights the associated object in the cellview.

It lets you associate the Label entry with a wire segment in the cellview by automatically drawing a line from the wire name to the object when you move the cursor into the design window.

Label specifies the net name.

Value determines whether the system displays the property value in the schematic. You can toggle this option to off to suppress the display.

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Virtuoso Schematic Composer User Guide

Form Descriptions

Height specifies the height of the name.

Font specifies a font for the name.

Justification specifies where the wire name appears in relation to its origin (placement location).

Alias, when enabled, specifies that theLabel entry is an alias for the net name.

Drafting, when enabled (default), maintains the normal orientation of the text as you rotate a label 180 degrees around a reference point. When this option is disabled, rotated text appears upside down.

Overbar is only a display option. You use this option to specify whether the software displays an overbar over a wire name. When this option is disabled (default), the software displays underscore characters ( _ ) in the wire name as part of the wire name text string. When this option is enabled, the software interprets underscore characters ( _ ) in the label as toggle switches that control where overbars begin and end. Overbars appear above the wire name, as shown in the examples.

Property Name

Appears in Design Window As

_abcde abcde

ab_cde abcde

_abc_de abcde

ab_cd_ef_gh_ij abcdefghij

Caution

To avoid confusion when names actually contain underscore characters, Cadence recommends that you disable this display option. It is provided only for backward compatibility.

October 2002

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Product Version 5.0

Virtuoso Schematic Composer User Guide

Form Descriptions

Edit Object Properties Form – Wire Segment

You use the Previous and Next buttons along with the Apply To options below to locate objects in your design window. When there are multiple objects in the selected set, you use the Next and Previous buttons to locate objects in the set. You use the Apply To options to specify the objects the software changes.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Apply To consists of up to three cyclic fields that you use to specify the object, or group of objects in a selected set, whose properties you want to change. The software uses one color to highlight selected objects. But when there are multiple objects in the selected set, the software uses a second color to highlight the current object. And when you configure the cyclic fields to apply changes to multiple objects, the software uses a third color to highlight all the affected objects.

Selection scope specifies whether you want to edit only the current object, only the selected objects in the specified object type group, or all the objects in the specified object type group (which includes both selected and unselected objects of the specified object type).

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Object filter appears only when the selection scope is set to all selected or all. This option acts as a secondary filter for further limiting the selection scope. The options vary depending on the selected object type.

Show specifies which properties the system displays on the form.

system displays the system-defined properties for a selected object.

user (default) displays the user-defined properties for a selected object.

The following option appears when you turn on the system option.

Point List displays the coordinates for the first and second point.

Property lists the properties that the system automatically extracts from the design database.

Value displays the values for the corresponding properties.

October 2002

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Virtuoso Schematic Composer User Guide

Form Descriptions

Display determines whether the system displays the property value in the schematic. You can toggle this option to off to suppress the display.

Width specifies whether the wire segment is narrow or wide. You can edit this field when you enable the wide option.

The Add, Delete, and Modify options affect only the display of properties on the Edit Objects Properties form.

Add displays the Add Property form, which lets you add a new property to the Edit Object Properties form.

Delete displays the Delete Property form, which lets you delete selected properties from the Edit Object Properties form.

Modify displays the Modify Property form, which lets you redefine properties currently displayed on the Edit Object Properties form.

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