AR# 308: Mentor 8: Using XACT 5 Timespec, TNM on an old library XC3000A/XC4000 design
AR# 308
Mentor 8: Using XACT 5 Timespec, TNM on an old library XC3000A/XC4000 design
描述
Keywords: Mentor 8, Xact, Timespecs, TNM
Urgency: Standard
General Description:
How do I use XACT-Performance in pre-Unified XC3000A designs? How do I use XACT-Performance 5.x syntax on old-library designs?
解决方案
It is possible to use XACT-Performance 5.x features on XC3000A designs created using the old, pre-XACT 5 libraries. It is also possible to use the new XACT-Performance 5.x syntax on any XC3000A or XC4000 family design drawn with the old libraries.
You can use the old XACT-Performance syntax for XC3000A designs drawn with the older libraries by performing the following steps:
* Make sure $LCA points to the new DS344 5.x directory.
This will allow you the XC4000 Timespec symbol to process correctly when placed on an XC3000A schematic. You may then use the Timespec symbol found in the old XC4000 library on a design that was done using the old XC3000 library and is targeted at an XC3000A device. For consistency, you may also want to copy the XC4000 timespec symbol to the XC3000 directory ($LCA/xc3000), so that all parts on the schematic come from the XC3000 directory for an XC3000A design.
To add support for the new XACT-Performance syntax for both XC3000A and XC4000 design done using the old libraries, perform these steps in addition to those shown above:
* First, back up the existing property.dat files found for the old XC3000 and XC4000 libraries using the following commands:
* Copy the property.dat files (which EDIF2XNF uses to determine what schematic properties are valid XNF properties) for the Unified Libraries into the old library directories. This allows the new properties, such as the TNM property, to be used in a design using the old library parts.