Color Data Migration

This section describes how data is handled when migrating from a previous release or another product version.

The standalone utility, mptScan Utility, can be used to detect and correct coloring issues, and remove coloring information from a design.

• From/To IC6.1.x
  IC6.1.x can open ICADV12.2 layouts without any coloring information in read or edit mode.
  IC6.1.x can open ICADV12.2 layouts with coloring information in read-only mode, with the following exceptions: Virtuoso Space-based Router and Virtuoso Routing IDE.
• To ICADV12.2 LA4 or above
  
  The colorSpec bits issue that is described in this section has been resolved in ICADV12.2 LA4 ISR2. If you are running Virtuoso ICADV12.2 LA4 ISR2, you do not need to run mptScan to check for or clear colorSpec bits.
  
  Some objects that were colored in a previous version of ICADV12.2 appear gray or uncolored in ICADV12.2 LA4 and ICADV12.2 LA4 ISR1. This was due to data and/or libraries using outdated colorSpec bits that are not supported. ICADV12.2 LA4 was enhanced to support up to eight colors in the database, using some bits that had been used for colorSpec in early releases of ICADV12.1.
  To ensure that the colorSpec bits are not set in a design,
  1. Run mptScan Utility at the command prompt to scan for colorSpec bits in the data.
• To ICADV12.2 Base Release or ICADV12.2 ISR1
  Modifying designs in ICADV12.2 base release and ICADV12.2 ISR1 can result in the data being read-only in ICADV12.1 and pre-LA6 versions of ICADV12.2.
  If you do not color or lock geometry, modifying a via with the Property Editor in ICADV12.2 base release or ICADV12.2 ISR1 will result in setting the coloring infrastructure to a version that can be edited only by ICADV12.2 LA6 and later releases. If you are coloring or locking geometry currently using ICADV12.2 LA4 and earlier versions, using ICADV12.2 base release to edit vias or perform coloring operations such as lock propagation will result in using the LA6 version of the coloring infrastructure. Any design with the ICADV12.2 LA6 version of the coloring infrastructure can be read into ICADV12.1 and ICADV12.2 LA4 and earlier releases, but cannot be edited.