Virtuoso Schematic Composer User Guide

Checking Designs

Cross-View Checking

You can check symbols using the Check – Cross View Check command. It provides the following capabilities:

■Checks interface consistency between a list of specified views

■Reports signals exported in one view but not in the other

■Reports signals whose pins have different directions in the two views

To check only the interconnection consistency between views, do the following:

1.From the symbol editor, choose Check – Cross View Check. The Cross-View Checker form appears.

2.Specify the options you want to apply to the check operation.

3.Click OK.

4.View your errors or warnings.

When the check operation completes,

A Cross-View Checker dialog box displays the number of errors and warnings found in the symbol.

The software displays blinking highlighted markers in your symbol to indicate the objects with errors or warnings.

Virtuoso Schematic Composer User Guide

Checking Designs

The CIW displays a one-line explanation of each error and warning.

icds - Log: /usr1/mnt1/mara/CDS.log

Cross-View Checker

5.Click Close.

6.Choose Check – Find Marker to view and resolve each object error.

Checking Expanded and Unexpanded Buses Across Views

The cross-view checker flags mismatches of expanded and unexpanded buses in symbol and schematic cellviews. If, for example, you place input pins in the schematic editor for bus A as A<1>, A<2>, and A<3>, but in the symbol cellview you unexpand the bus as A<3:1>, crossview checker issues the following warning message:

Warning: Pin “A<3>” doesn't have an exact match in “cell1 symbol”

To correct this warning, set up the environment variable as follows:

schSetEnv("vicExactPinMatch" nil)