ELL201 Verilog Assignment Compiling Verilog Code iverilog -o graycodesim graycode.v tb_graycode.v iverilog -o ringcountersim ringcounter.v tb_ringcounter.v iverilog -o sequencesim sequence.v tb_sequence.v TestBench Results vvp graycodesim vvp ringcountersim vvp sequencesim