Requirements for HDL Cosimulation

HDL cosimulation is an optional feature of ADS. To run it, you must have:

• ADS Ptolemy simulator
• One of the following HDL simulators:
  • Model Sim/PLUS ^TM
  • NC-SIM (only on Linux and Sun)
  • Verilog® XL (only on Linux and Sun)
    

    Note For the latest versions of HDL simulators supported on ADS, see Check the System Requirements (Windows) or Check the System Requirements (UNIX/Linux).  NC-SIM and Verilog XL are not supported on Windows.

Requirements for 64-bit Operating Systems

32-bit HDL cosimulation is available on all supported operating systems, whereas 64-bit HDL cosimulation is supported only on Linux and Solaris. Using HDL cosimulation with 32-bit ADS requires 32-bit HDL simulators, and using HDL cosimulation on 64-bit ADS requires 64-bit HDL simulators. It is not possible to cosimulate 32-bit ADS with 64-bit HDL simulators and vice-versa.

Caution You must ensure that ADS points to the correct HDL simulator during cosimulation. Pointing to the wrong simulator (such as pointing to a 32-bit HDL simulator when using 64-bit ADS and vice versa) may result in unexpected results, abnormal behavior, and possibly an unstable system.

The following information gives details about each HDL simulator:

• ModelSim
  • ModelSim is supported using the following simulators:
    • ModelSim SE 6.3a for 64-bit and 32-bit simulations. There is not HDL Cosim support on 64-bit windows.
  • The following environment variables must be set or appended before cosimulating with ModelSim in addition to all other environment variables required by ModelSim and ADS:
    • MTI_VCO_MODE = 32 or 64 corresponding to 32-bit or 64-bit simulation.
    • LMC_HOME = points to the ModelSim installation directory.
    • PATH = points to the 32-bit ModelSim executable for 32-bit cosimulation and to the 64-bit ModelSim executable for 64-bit cosimulation.

• NC-Sim
  • NC-Sim is supported using the following simulators on Linux and Sun:
    • IUS 5.8 for both 64-bit and 32-bit simulations.
  • Use the documentation for IUS 5.8 to set up all environment variables needed to run NC-Sim.

• Verilog-XL
  • Since Verilog-XL does not support 64-bit platforms, it is not supported in 64-bit ADS.
  • Verilog-XL is supported only in 32-bit ADS on Linux and Sun.

Requirements for Windows Vista

Windows Vista users must have Administrative rights with User Account Control (UAC) disabled.
Consult Windows Vista help to disable UAC.