What’s New in Virtuoso Simulation Driven Interactive Routing

This topic provides a high-level overview of the new features in the IC23.1 base release and subsequent ISR releases.

IC23.1 ISR2

Twig and Trunk Via Alignment

Use the weAutoTwigTrunkViaAlignment and weAutoTwigTrunkViaDirection environment variables to allow the via alignment as per the via direction for twigs over the trunk. You can also use the Via Alignment button on the SDR toolbar for the via alignment as per the via direction for twigs over the trunk.

Related SKILL function:

weAutoTwigCycleTrunkViaAlignment

Improvements in the SDR Options Form

Now, the SDR Options form has been enhanced with the following improvements:

• The Twig Via Alignment field has been renamed to Via Direction. 
• The Twig Via Mode field has been renamed to Via Mode. 
• The Via Direction field now supports only the Twig and Trunk values. The Center value has been removed.

Removed Features

The weAutoTwigViaAlignment environment variable has been deprecated and is no longer supported.