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        COMIrqSharing=<Boolean>

   Default: true for Micro Channel (TM) and EISA machines;
            false for all other machines
   Purpose: Specifies whether COM IRQs will be sharable
            between mulitiple communications ports or with
            other devices. Enable this switch if your machine
            uses the same interrupt for COM3 or COM4 as it
            does for COM1 or COM2.
   To change: Use Notepad to edit the SYSTEM.INI file.