Virtuoso XL Layout Editor User Guide

Checking Design Data in the Virtuoso XL Layout Editor

Removing Probes

To remove an individual probe from the layout,

Hold down the Control key and click on the probe to delete.

To remove all probes from windows,

Click on an empty space in the layout window.

Exiting the Probe Command

To exit the Probe command,

Click Cancel in the Virtuoso XL Probe Options form or press Escape.

Showing the Options Form

To set the Probe Options form to appear each time you use the Probe command, follow these steps.

1.From the CIW, choose Utilities – User Preferences.

The User Preferences form appears.

2.Click Options Displayed When Commands Start.

3.Click OK.

The options form opens automatically the next time you use the Probe command.

Checking Shorts and Opens

To check the number of incomplete nets, short markers, and illegal overlap markers,

From the layout window, choose Connectivity – Check – Shorts and Opens.

Virtuoso XL Layout Editor User Guide

Checking Design Data in the Virtuoso XL Layout Editor

A text window opens, displaying in report format the number of incomplete nets, shorts, and illegal overlaps currently in the layout window. This command also reports shorts and opens in nets where pins are weakly connected and must connected.

Note: This command is grayed out and cannot be used when the connectivity extractor is turned off (on the Layout XL Options form).

Comparing Design Elements and Parameters (Checking against the Connectivity Source)

You can check whether

■All devices in the schematic are present in the layout

■All devices in the layout are present in the schematic

■All properties listed for devices in the schematic are associated with equivalent properties on devices in the layout

To compare design elements and their parameters in the schematic with those in the layout, follow these steps.

Virtuoso XL Layout Editor User Guide

Checking Design Data in the Virtuoso XL Layout Editor

1.From the layout window, choose Connectivity – Check – Against Source.

If devices in the schematic are missing in the layout, a Virtuoso XL Info window opens and lists the name of the components. The components are highlighted in the schematic.

If a device that is not on the schematic is present in the layout, it appears with a blinking marker.