No .vcd file found error, but I have used the $dump code

Question

I have been trying to open EPWave at EDA playground, and it always returns the error:

No *.vcd file found. EPWave will not open. Did you use '$dumpfile("dump.vcd"); $dumpvars;'?

I have added those two at the beginning of the initial, and yet it's not working (also the $finish of course)

This is the project: https://www.edaplayground.com/x/SzkF

I have tried adding time before and after the finish and beginning, naming the dumpfile in another way looking some similar code, but none of that has worked.

toolic · Accepted Answer · 2024-03-21 10:39:01Z

0

iverilog does not always give very useful error messages. Switch to another simulator on EDA Playground. For example, with the Cadence simulator, we get this error message:

  reg[0] b_reg;
       |
xmvlog: *E,SVNPSN (design.sv,132|7): The value in the single-bound form of a range must be positive.
  reg[0] b_reg;
       |
xmvlog: *E,SVPKSN (design.sv,132|7): The single-bound form of a range is only allowed for array (i.e., unpacked) dimensions.

I can get rid of the compile error when I change:

  reg[0] b_reg;

to:

  reg b_reg;

Switching back to iverilog, I no longer see the original VCD error message.

answered Mar 21, 2024 at 10:39

toolic

62.9k21 gold badges81 silver badges130 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

No .vcd file found error, but I have used the $dump code

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related