Simulator Configuration Guide for Synopsys Models

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Chapter 7: Using QuickSim II with Synopsys ModelsSimulator Configuration GuideTracing Instruction ExecutionSmartModel Windows provides the ability to trace peripheral component activity in adesign. Most larger peripherals and microprocessors equipped for SmartModelWindows have a 1-bit element named TRACE_ENABLE. Setting TRACE_ENABLE toone (1) causes trace messages to display in the transcript window.Use the following command to enable instruction tracing for a model:FORCE model_instance/TRACE_ENABLE 1Some trace message examples follow:‘I$2752': ‘Trace: Logical Master writing to PMMU Operand Address CIR.‘I$2752': ‘SmartModel Instance /I$2752(U103:MC68851-12), sheet1 ofmy_design at time 819500.0‘I$2752': ‘Trace: MC68851 is starting a table search using CRP.‘I$2752': ‘SmartModel Instance /I$2752(U103:MC68851-12), sheet1 ofmy_design at time 822150.0Setting Breakpoints and Word TriggeringUse the ADD BREAKPOINT command to stop the simulation at critical points andexamine internal window elements. You can set breakpoints based on the contents ofspecific elements inside components within the design. For example, the followingcommand causes the simulation to stop at the breakpoint when the specified condition ismet.ADD BREAKPOINT (model_instance/TC==0B)You can use Boolean expressions with the Add Breakpoint command to set up complexword triggers that provide a logic analyzer during simulation. For example, thefollowing command causes the simulation to stop at the breakpoint when both of the twospecified conditions are met.ADD BREAKPOINT ((model_instance/SCC!=0)&&(model_instance/TC==B))Trigger terms do not have to refer to the same instance or model. In addition, net valuesand window element contents can be combined to make trigger terms.Single-Step SimulationThe ADD BREAKPOINT command defaults to stopping the simulator when a signal orexpression in a window element changes state. As a result, you can use the ADDBREAKPOINT command to single-step through a simulation.142 Synopsys, Inc. October 6, 2003
Simulator Configuration GuideChapter 7: Using QuickSim II with Synopsys ModelsRenaming InstancesUse the ADD SYNONYM command to rename instances with easier-to-remembersubstitute names. For example, to rename a model for an MC68851 with an instancename of “I$289” to an easier-to-remember name such as “PMMU,” use the followingcommand:ADD SYNONYM 'PMMU' I$289Once you add a synonym you can use it in place of the original instance name incommands. For example, the following command lists the MC68851 translation controlregister.ADD LISTS HEX PMMU/TCCombining Register ElementsYou can use the ADD BUS command to combine meaningful 1-bit elements of a PLDinto a single bus that can be viewed or changed after the PLD has been programmed.This saves effort compared to dealing with each 1-bit element one at a time. Table 18shows the elements of a sample device, the Texas Instruments TIBPAL22V10. Allwindow elements for this example are 1-bit wide with read and write access.Table 18: Elements in a TIBPAL22V10 DeviceElementDescriptionQ23 PAL Internal Register connected to pin 23Q22 PAL Internal Register connected to pin 22Q21 PAL Internal Register connected to pin 21Q20 PAL Internal Register connected to pin 20Q19 PAL Internal Register connected to pin 19Q18 PAL Internal Register connected to pin 18Q17 PAL Internal Register connected to pin 17Q16 PAL Internal Register connected to pin 16Q15 PAL Internal Register connected to pin 15Q14 PAL Internal Register connected to pin 14October 6, 2003 Synopsys, Inc. 143
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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 8: Using Scirocco with Syno
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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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