Simulation Script Parameters

This page describes configuration parameters that reside in the HDL Code Generation > EDA Tool Scripts > Simulation Script tab of the Configuration Parameters dialog box.

Simulation file postfix

Specify a postfix to append to the DUT or test bench name to form the simulation script file name.

Settings

Default: _sim.do

For example, if the name of the device under test or test bench is my_design, HDL Coder™ adds the postfix _sim.do to form the name my_design_sim.do.

Command-Line Information

Property: HDLSimFilePostfix

Type: character vector

Default: '_sim.do'

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.

Simulation initialization

Format name passed to fprintf to write the initialization section of the simulation script.

Settings

Default: The default is

 ['onbreak resume\nonerror resume\n']

The Init phase of the script performs required setup actions, such as creating a design library or a project file.

Command-Line Information

Property: HDLSimInit

Type: character vector

Default: ['onbreak resume\nonerror resume\n']

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.

Simulation command

Format name passed to fprintf to write the simulation command.

Settings

Default: vsim -voptargs=+acc %s.%s\n

The first implicit argument, %s, is the library name. The second implicit argument is the top-level module or entity name. If your target language is VHDL^®, the library name is the value of VHDL library name. If your target language is Verilog^® or SystemVerilog, the library name is 'work' and cannot be changed.

If you compile your filter design with code from other libraries, update VHDL library name to avoid library name conflicts.

Note

Prior to R2020b, the default simulation command was vsim -novopt %s.%s\n. Mentor Graphics^® ModelSim^® versions prior to 10.7 support the former syntax. If you use a more recent Mentor Graphics ModelSim version, use the vsim -voptargs=+acc %s.%s\n syntax.

Command-Line Information

Property: HDLSimCmd

Type: character vector

Default: 'vsim -novopt %s.%s\n'

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.

Simulation waveform viewing command

Specify the waveform viewing command written to simulation script.

Settings

Default: add wave sim:%s\n

The implicit argument, %s, adds the signal paths for the DUT top-level input, output, and output reference signals.

Command-Line Information

Property: HDLSimViewWaveCmd

Type: character vector

Default: 'add wave sim:%s\n'

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.

Simulation termination

Format name passed to fprintf to write the termination portion of the simulation script.

Settings

Default: run -all\n

The termination phase (Term) is the final execution phase of the script. One application of this phase is to execute a simulation of HDL code that was compiled in the Cmd phase. The Term phase does not take arguments.

Command-Line Information

Property: HDLSimTerm

Type: character vector

Default: 'run -all\n'

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.

Simulator flags

Specify simulator flags to apply to generated compilation scripts.

Settings

Default: '' (no simulator flags)

Specify simulator flags to apply to generated compilation scripts as a character vector. The simulator flags are specific to your application and the simulator you are using. For example, if you must use the 1076–1993 VHDL compiler, specify the flag -93.

The flags you specify with this option are added to the compilation command in generated compilation scripts. The simulation command is specified by the HDLCompileVHDLCmd or HDLCompileVerilogCmd properties.

Command-Line Information

Property: SimulatorFlags

Type: character vector

Default: ''

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.