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Before running the program, it can be useful to know the device name that the operating system has allocated to the serial port you are using to connect to the Z88. This is either a physical number that is on the computer e,g, COM.1 COM.2 (device names on Windows), or a virtual one (see below).

If you are using a Serial to USB converter the driver will automatically allocate a new serial port device name. Please refer to the manufacturer's instructions for details how to find out that name (COM port number on Windows).

This COM port may also be examined or changed in the Device Manager.

Original software for the Z88 could only select COM.1 or COM.2, so if they are required, here is how to change it from COM3 (the automatic choice that was selected in this case) to COM.1. Select the

• Device Manager
• Ports (COM & LPT)
• Prolific USB-to-Serial Comm Port (COM3) (or whatever device you are using).
• Properties
• Port Settings
• Advanced ...
• Change COM Port No to COM1
• OK

Note: The parameters shown in the 'Advanced Settings' are ignored by this program.