For Chisel, the most popular tester Treadle has VCD dumps built in. That way you can do your behavioral debugging directly with the source. Of course, for anyth

For Chisel, the most popular tester Treadle has VCD dumps built in. That way you can do your behavioral debugging directly with the source. Of course, for anything involving timing etc you'll have to go with the relevant vendors' tools, which is typically Verilog/VHDL.