Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!pyrnj!pyrdc!uunet!portal!cup.portal.com!
From: MichaelNC@cup.portal.com (Michael Kent Brady)
Newsgroups: comp.unix.xenix
Subject: Re: COM3 with Xenix 2.2.3
Message-ID: <10119@cup.portal.com>
Date: 18 Oct 88 01:48:24 GMT
References: <1113@lakesys.UUCP> <3700004@eecs.nwu.edu>
Organization: The Portal System (TM)
Lines: 5

Or try  "mkdev serial"  

Mine allows COM1 thru COM4

michaelnc@cup.portal.com