Simulator Configuration Guide for Synopsys Models

Chapter 7: Using QuickSim II with Synopsys ModelsSimulator Configuration Guide●Example of defining multiple properties:$add_instance ("$LMC_HOME/special/qsim/symbols/model_name",,,,["property_name_1","property_value_1","property_name_2","property_value_2","property_value_3","property_value_3"])If a property value is not specified, its default value is selected.DWMM Logic SimulationThe following sections discuss the use of DWMMs for logic simulation in the MentorGraphics QuickSim II environment. For more information, see the following MentorGraphics manuals:●●●Common Simulation User’s and Reference ManualGetting Started with QuickSim II Training WorkbookQuickSim II User’s ManualCurrent Support LevelsBe sure to keep the following in mind before starting a simulation:●●●DWMM models support the implementation of location maps. You can use thesemaps to install a library anywhere on the system. Set an environment variable and alocation map variable before using location maps.DWMM models support extended-time (64-bit) simulations.DWMM models do not directly support unit-delay timing mode via QuickSim’stiming mode command line or interactive setting. However, you can run a DWMMmodel in unit-delay mode by setting its TimingVersion property to “none”.Default Timing ModeThe default timing mode for DWMM models is “typ”. You can also use thetiming-mode switch when invoking QuickSim to force the timing mode to “min”, “typ”,or “max”.Signal Levels and Drive StrengthsDWMM models recognize the nine signal levels and drive strengths listed in Table 22.QuickSim II maps indeterminate strengths to unknowns for “12-state” simulations.The models generate strong and resistive states. The high-impedance unknown state(XZ) is used when a model places an output in the high-impedance state.158 Synopsys, Inc. October 6, 2003