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Wilson Snyder 2024-03-04 08:04:39 -05:00
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docs/guide/faq.rst
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@ -128,10 +128,13 @@ How do I generate waveforms (traces) in C++?
See also the next question for tracing in SystemC mode.
A. Pass the :vlopt:`--trace` option to Verilator, and in your top-level C
code, call ``Verilated::traceEverOn(true)``. Then you may use
``$dumpfile`` and ``$dumpvars`` to enable traces, the same as with any
Verilog simulator. See ``examples/make_tracing_c`` in the distribution.
A. Pass the :vlopt:`--trace` option to Verilator. Then you may use ``$dumpfile`` and
``$dumpvars`` to enable traces, the same as with any Verilog simulator,
although Verilator ignores the arguments to ``$dumpvars``. See
``examples/make_tracing_c`` in the distribution.
If writing the top-level C code, call ``Verilated::traceEverOn(true)``;
this is done for you if using :vlopt:`--binary`.
B. Or, for finer-grained control, or C++ files with multiple Verilated
modules, you may also create the trace purely from C++. Create a