Simulator Configuration Guide for Synopsys Models

Chapter 2: Using VCS with Synopsys ModelsSimulator Configuration GuideTable 6: VCS SmartModel Explanation (Continued)Line ReferenceDescription-l vcs_sim.log Specifies a log file where VCS writes compilationand simulation messages.-Mupdate-RI-LDFLAGS switchesThis specifies incremental compilation, whichcauses VCS to compile only the modules that havechanged since the last run.This makes VCS run interactively. VCS invokes theVirSim GUI after compilation and pauses thesimulator at time zero.Additional platform-specific switches that may beneeded.-full64 Compiles the design in 64 bit mode and creates a 64bit executable for simulating in 64 bit mode.Using FlexModels with VCSTo use FlexModels with VCS, follow this procedure. VCS links the external PLIroutines that contain the custom FlexModel integration code during compilation of yourdesign.1. Make sure VCS is set up properly and all required environment variables are set, asexplained in “Setting Environment Variables” on page 40.2. Create a working directory and run flexm_setup to make copies of the model'sinterface and example files there, as shown in the following example:% $LMC_HOME/bin/flexm_setup -dir workdir model_fxYou must run flexm_setup every time you update your FlexModel installation witha new model version. Table 7 lists the files that flexm_setup copies to your workingdirectory.Table 7: FlexModel VCS Verilog FilesFile Name Description Locationmodel_pkg.incmodel_user_pkg.incVerilog task definitions for FlexModelinterface commands. This file alsoreferences the flexmodel_pkg.inc andmodel_user_pkg.inc files.Clock frequency setup and usercustomizations.workdir/src/verilog/workdir/src/verilog/44 Synopsys, Inc. October 6, 2003