Kermit FAQ - How Can I Make MS-DOS Kermit Use COM3, COM4?

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9 How Can I Make MS-DOS Kermit Use COM3, COM4?

From: (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: COM3 available in 3.14?
Date: 20 Jan 1995 15:48:20 GMT
Organization: Columbia University

In article <>,
Cal Lott <> wrote:
> I was simply wondering if version 3.14 (or any earlier) could
> address COM3 and above.
A frequently asked question. The short answer: Yes.

The medium answer: COM3 and above have no standard address or IRQ, hence communications software (Kermit or anything else) can't always find them, in which case you have to specify the address and IRQ, using a sequence like:

  SET COM3 \x3e8 5
(You need both commands, in the order shown.) You must also beware of "missing" COM ports. To use (say) an internal modem as COM4 when there is no COM3 is not straightforward.

The long answer: Read section 6 of the KERMIT.BWR file on your MS-DOS Kermit 3.14 diskette (the version at in kermit/a, file mskerm.bwr, might be newer).

- Frank

Kermit FAQ / Columbia University /