Known Problems and Solutions in Virtuoso Width Spacing Patterns

This document describes the known issues with Virtuoso^® Width Spacing Patterns and suggests the workarounds for these issues. Each issue is identified by a Cadence Change Request (CCR) number.

Related Topics

Virtuoso Width Spacing Patterns

CCR 2171967: Unable to open the Track Pattern Task Assistant

Description: Unable to open the Track Pattern Task Assistant by clicking the button on the Track Pattern Assistant toolbar.

Solution: As a workaround, access the Cadence Help pages for Track Pattern Assistant by clicking on the title bar of the assistant.

CCR 1482939: Repeat mode for a WSPPDef shows Stepped but the allowedRepeatMode for the active pattern is flippedOnly

Description: In the Track Pattern assistant Design Settings form, the Repeat Mode for a WSSPDef is Stepped but the allowedRepeatMode for the active WSP is set to flippedOnly in the technology file. For backward compatibility, the default repeat mode for both the global grid and regions is set to Stepped, regardless of the allowedRepeatMode setting for the active WSP. This is needed because some designs might not have the default repeat mode set or an existing pattern from an older release has been changed to flippedOnly. When the allowedRepeatMode for the active WSP is set to flippedOnly in the technology file and the Repeat Mode is Stepped, the Repeat Mode drop-down menu in the Track Pattern assistant Design Settings form will show Stepped with an asterisk (*).

Solution: As a workaround, choose an appropriate Repeat Mode from the drop-down menu for the WSSPDef in the Track Pattern assistant Design Settings form.