ID:13503 Verilog HDL Event Control warning at <location>: event expression is a constant

CAUSE: In a Verilog Design File (.v), you used a constant as an event expression in an Event Control. By definition, a constant never changes value, and thus it has no effect on the Event Control during simulation. Though legal, a constant as an event expression may imply the presence of a typographical error.

ACTION: If you intended to use a constant as an event expression in an Event Control, no action is required. Otherwise, check the Event Control for possible typographical errors.