Simulator Configuration Guide for Synopsys Models

Appendix B: Using Custom Memory ModelsSimulator Configuration GuideUsing Custom Memory Models withNC-VHDLAttentionFor best performance, use version 4.0 or later of NC-VHDL: this allows youto load multiple dynamic libraries containing C code. To use this means ofloading the DWMM routines, include the following option in the lineinvoking ncsim:ncsim -loadfmi libfmi_ml.so:slm_boot libfmi_ml.so (or .sl on hpux platforms) contains the library table andbootstrap function needed by the dynamic loader included in NC-VHDLversion 4.0 and above.This method eliminates the need to link libfmi_ar.a with your other externalC (foreign language) module to produce a single libfmi.so that incorporatesall foreign language modules in a single library.For more information about using the NC-VHDL with multiple dynamiclibraries, see your Cadence simulator documentation.To use custom memory models with NC-VHDL, follow this procedure:1. Make sure NC-VHDL is set up properly and all required environment variables areset, as explained in “Setting Environment Variables” on page 107.2. If you have built your own Foreign Model Interface (FMI) shared library (forexample, if you’re using VERA or Synopsys VMT models, or your own FMI code),perform this step. Otherwise, skip to step 3.NC-VHDL binds in only one shared FMI library at runtime. If your design usesFMI, you need to build a new FMI shared library that contains your library and theDWMM library. You can find a DWMM archive library here:❍❍HP-UX:$LMC_HOME/lib/hp700.lib/libfmi_ar.aSolaris:$LMC_HOME/lib/sun4Solaris.lib/libfmi_ar.aYou must create a new archive that includes the DWMM archive, library table filedeclaration object file, and your archive. Detailed instructions for this process canbe found in the “Foreign Model Integration” chapter of the Affirma NC VHDLSimulator C Interface User Guide.296 Synopsys, Inc. October 6, 2003