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Simple question about $display

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Hello experts, Here's something I just can't figure out, but might be trivial for someone out there ... If I define a global as a hierarchical path like so : `define HIER_PATH Itop.I1.I2.I3 How can I use $display (or any alternative) to print the value of `HIER_PATH in a message. I'm aware of %m and %M, but they don't apply here. Thanks!


Originally posted in cdnusers.org by nnxx

  • As you stated, the %m is the only way I can think of. You would need to put a function in the module represented by I3 and have it display the value of %m.

    You might also want to post this question to the Simulation Forum and perhaps someone over there might have something more elegant, perhaps using VPI.

    Tim


    Originally posted in cdnusers.org by tpylant

  • If you are using SystemVerilog, there is a new macro directive `" that allows you to build a string inside a macro. The following worked in my little testcase.

    `define HIER_PATH Itop.I1.I2.I3
    `define disp(hp) `"hp`"
    initial $display(`disp(`HIER_PATH));

    I had to use the `" in a macro, I couldn't use it directly in the $display statement. It seems as if it is only legal in a macro, not in the actual Verilog text.


    Originally posted in cdnusers.org by TAM

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