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Is there any control to set undriven signal externally before NCSIM elaboration?

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Avi199

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I want to control RTL's undriven signal's value through IES/NCSIM's(Cadence Simulator) runtime.

Is there any command line option/ tcl settings to control this?

Cadence tool : LEC can control this like below :

set undriven signal <value : 0/1/X/Z>



Cadence tool : GENUS can control this like below :

set_db hdl_unconnected_value <value : 0/1/X/Z>
 

Why isn't your test-bench driving all the input signals (which is the correct procedure)?

Alternatively it should be possible to FORCE an input signal to a fixed value; most simulators support this forcing. Look into your NCSIM docu guide for the equivalent command and use it as TCL.
 

Just make your testbench control it with whatever value needed.
 

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