The original WaitForPort command of Amiga-OS has two major disadvantages: ·it ends itself if the port isn't available within 10 seconds. ·it uses an endless loop of FindPort() calls resulting in a massive loss of CPU performance. NewWait4Port waits for the Port to appear even if it has to wait for hours. It also allows you to define a delay time between FindPort() calls preventing a loss of CPU performance.