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From: Berry.Mobley@uscacm.UUCP (Berry Mobley)
Newsgroups: comp.sys.ibm.pc
Subject: COM3 and COM4
Message-ID: <278.25E7ADD9@uscacm.UUCP>
Date: 24 Feb 90 22:36:27 GMT
Organization: USC ACM BBS  -/-  Columbia, SC
Lines: 17


     I have a 386 clone at work that I am trying to install 2 more serial 
ports in.  It's running MS-Dos 4.01 (which supposedly supp
orts COM3 and COM4.)  The serial card appears to be connected correctly, 
but I can't get anything to access the ports.  When I do a 
MODE COMn (n is 3 or 4) I get "Illegal device name".  Using n greater 
than 4 returns "Invalid Parameter".  
 
My question:  Has anyone successfully installed COM3 and COM4 without 
custom drivers under MSDOS 4.01?
                                            Berry Mobley



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