General Description: The JC2_VER tutorial design contains an initial block that is used to define flip-flop power-up states for functional simulation. The initial assignment for the 4-bit Q output bus is incorrectly written as:
q[3:0] = "0000";
Solution
This does not cause any functional failure, as the default initial state for all flip-flops is zero. However, the valid Verilog assignment should be: