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How to change COM port numbers in Win98 SE?

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You could add dummy ports in Win.INI then the next port to install will be named the next in the list. Remove redundant ports in Win.INI. Example of port config under [Ports] is COM2:=9600,n,8,1,x

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It depends of software you try to run, to be precise. Few options:

1. HARDWARE Registry Subkey (HKLM\Enum\). Search registry keys with name == "PORTNAME"

2. BIOS Data Area, 40h:0 - 40h:7, 4 WORDs, BIOS known COM port base addresses.

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