Short description of ZylGPSSimulator 1.33: ZylGPSSimulator is a Delphi GPS receiver simulator component. It creates a virtual serial port, converts the position parameters in NMEA format and writes them to the virtual port. The user can set parameters like latitude, longitude, altitude, speed, heading and transmit them to the port. With the help of a mapping software it's possible to watch the transmited positions on a map.