Simulator Configuration Guide for Synopsys Models

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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
Simulator Configuration GuideChapter 7: Using QuickSim II with Synopsys ModelsThe state values shown in bold are generated by the models. All values are recognized.Table 22: DWMM Signal State ValuesSignal LevelDrive Strength Low (0) High (1) Unknown (x)Strong (S) 0S 1S XSResistive (R) 0R 1R XRHigh Impedance (Z) 0Z 1Z XZQuickSim II Command Line SwitchesWhen QuickSim II is invoked from the command line, DWMM models recognize onlytwo switches: -timing_mode and -time_scale.●-timing_mode: use this switch to set the global timing mode to “min”, “max”, or“typ”:-timing_mode { min | max | typ }●The default = typ, except if the model’s TimingVersion property is set to none, inwhich case the model runs in unit-delay mode.-time_scale: use this switch to adjust the resolution of time values (delays andchecks) by specifying the time scale in nanoseconds (default = 0.1 ns):-time_scale timescaleWarningDWMM models must use a timescale value of 0.1 or less. Values greaterthan 0.1 cause DWMM models to crash.October 6, 2003 Synopsys, Inc. 159
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Simulator ConfigurationGuide for Sy
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ContentsSimulator Configuration Gui
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FiguresSimulator Configuration Guid
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TablesSimulator Configuration Guide
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PrefaceSimulator Configuration Guid
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Chapter 1: Using Synopsys Models wi
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Chapter 2: Using VCS with Synopsys
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Chapter 3: Using ModelSim Verilog w
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Chapter 4: Using ModelSim VHDL with
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Chapter 5: Using NC-Verilog with Sy
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Chapter 9: Using VERA with Synopsys
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Chapter 10: Using SystemC with Syno
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Appendix A: Using LMTV with Synopsy
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Appendix B: Using Custom Memory Mod
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IndexSimulator Configuration Guide$
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Simulator Configuration Guide for Synopsys Models

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