COM1Irq=<number>
                                COM2Irq=<number>
                                COM3Irq=<number>
                                COM4Irq=<number>

Default:        COM1Irq=4; COM2Irq=3; COM3Irq=4; COM4Irq=3 for ISA and EISA
                machines. COM1Irq=4; COM2Irq=3; COM3Irq=3; COM4Irq=3 for
                MCA machines

Purpose:        Specifies which interrupt line is being used by the device
                on the corresponding serial port. Check your hardware
                documentation for the appropriate value. If there is a
                hardware conflict between ports, set this value to -1 to
                disable input for a COM port.

Note:           Windows uses these values for both standard and 386
                enhanced mode.

To Change:      Use the Advanced Settings dialog box for the Ports option in
                Control Panel.


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