Troubleshoot Cut Layer Issues

Abstract Generator checks to ensure that every cut layer used in a default via has both an upper and a lower routing layer. It stops if this check fails and issues the error message ABS-10029 and 10030.

Define vias in the LEFDefaultRouteSpec (validVias) and in a custom via definition (customViaDefs) in the viaDefs class.

ABS-10029

Define the via in the following sections in the technology file: viaDefs (standardViaDefs or customViaDefs) and validVias in the interconnect section of the LefDefaultRouteSpec constraint group.

If you define a layer above a routing layer, you must define a via layer to go between them. Abstract Generator cannot extract connectivity without this via layer. Use the Technology File Manager to define the via layer in all the required technology file sections.

Virtuoso Abstract Generator User Guide
Product Version IC23.1, November 2023