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Simulator Configuration Guide for Synopsys Models

Simulator Configuration Guide for Synopsys Models

Simulator Configuration Guide for Synopsys Models

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Chapter 5: Using NC-Verilog with <strong>Synopsys</strong> <strong>Models</strong><strong>Simulator</strong> <strong>Configuration</strong> <strong>Guide</strong>$lm_loop_instance Command ReferenceThe $lm_loop_instance command enables the loop mode <strong>for</strong> a specified model instance.Syntax$lm_loop_instance (“instance_path”)Argumentsinstance_pathSpecifies the pathname of the model instance <strong>for</strong> which theloop mode is to be enabled.DescriptionEnables the loop mode <strong>for</strong> a specified instance. In loop mode, the hardware modelerrepeatedly plays to the physical device the pattern history of the specified deviceinstance. This command is most often used to analyze the behavior of a device and itspattern history with an oscilloscope or logic analyzer connected to the device.Once in loop mode, the interface prompts you to press the Return key to exit the loopmode.ExamplesThe following example turns on loop mode <strong>for</strong> the “U1” model instance.$lm_loop_instance ( “U1” );The following message is displayed while the instance is in loop mode.Entering loop mode <strong>for</strong> hardware model instance U1Press Return to terminate loop mode.100 <strong>Synopsys</strong>, Inc. October 6, 2003

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