@ vs.wait denotes event control: That follow the event-control expression do not execute until an activating event occurs. When such an event occurs,the statements execute in sequence,top to bottom. Wait (denotes wait control: The process will be stopped if the wait-control expression is FALSE The process will be continued if the wait-control expression is TURE. 2021/1/13 ASIC Design,by Yan Bo 14ASIC Design, by Yan Bo @ vs. wait @ denotes event control: That follow the event-control expression do not execute until an activating event occurs. When such an event occurs, the statements execute in sequence, top to bottom. Wait ( ) denotes wait control: The process will be stopped if the wait-control expression is FALSE. The process will be continued if the wait-control expression is TURE. 2021/1/13 14