Description:
You can change the post-route preference file (.prf) by adding "INDUSTRIAL;" and "TEMPERATURE 85C;". Also at the same time the trace options can be updated in ispLEVER's Tools-> Trace Options or Lattice Diamond's Strategies->Place & Route Trace.
Then you can generate a new trace report by right clicking "Place & Route Trace Report" -> "Force One Level" for ispLEVER or by right clicking "Place & Route Trace" -> "Rerun" for Lattice Diamond.
If you want to get the trace report with a new speed grade (i.e., a different speed grade from the one used in the NCD file), you should run a command line. For example, the command line below:
trce.exe -v 10 -sp 5 -sethld -o design.twr design.ncd design.prf
Here "-sp 5" overrides the default speed grade with -5 speed grade. "-v 10" sets the 10 items reported for each timing preference. It can be run in ispLEVER Console or Diamond Tcl Console.
For more details, please refer to the "Running TRACE from the Command Line" section of Lattice on-line help.