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Article View: comp.sys.ibm.pc.hardware.comm
Article #127

Re: Stange UART problem with Hayes

#127
From: John Jerrim
Date: Fri, 05 Apr 1996 13:48
33 lines
2113 bytes
On Fri, 05 Apr 96 01:12:49 GMT, cclee@empirenet.com (Patrick Lee)
wrote:

|I ran this program called PortInfo and at first it said that the 16550 UART 
|was actually an emulation chip, E16550. But I thought that the Accura had a 
|real 16550 UART in it. But if I ran the program again, it couldn't detect the 
|COM port I installed my modem (COM2) on because of a port conflict and the 
|UART becomes a 16550A. If I cold booted my computer, the same thing happens 
|again, detects COM port and then it can't.  This happens with both my 2400 and 
|28800bps modem. I also removed the modem and put in a high speed serial card 
|with a 16550 UART and PortInfo could detect COM2 more than twice. But I know 
|if I try to put in both my serial card and Accura 288B, PortInfo will not 
|detect the modem. Any answers to this problem?   

I'm not clear from your description, but it sounds like you may be
installing both a com port and a modem at the same com port (address).
An internal modem includes the "com port", so make sure that you don't
install the modem at an existing com port address.

Try running PortInfo with the modem OUT of the computer to make sure
that the com port address is not being used by another com port.

I hope this helps...
John Jerrim
Computer Telecommunication Systems, Inc.
Diagnostic & Installation Products for Modems & Serial Ports

   World Wide Web: http://www.comminfo.com
              FTP: ftp://ftp.comminfo.com/users/www00402
           E-Mail: jjerrim@comminfo.com
            Voice: 1-770-263-8623 
              FAX: 1-770-263-0124 
              
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From: jjerrim@comminfo.com (John Jerrim)
Newsgroups: comp.sys.ibm.pc.hardware.comm,comp.dcom.modems
Subject: Re: Stange UART problem with Hayes
Date: Fri, 05 Apr 1996 13:48:12 GMT
Organization: Computer Telecommunication Systems, Inc.
Message-ID: <316521be.171749269@news.atl.mindspring.com>
References: <4k1suf$muj@e1.empirenet.com>
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