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Jul 20th, 2008, 1:22am
   Mischel Internet Security Forum
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   Closed Com Port in Windows XP		 « Previous topic | Next topic »
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   Author  Topic: Closed Com Port in Windows XP  (Read 2653 times)
diefdog
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Closed Com Port in Windows XP
« on: Apr 12th, 2004, 3:21am »		 Quote Quote  Modify Modify
I am using a Magellan GPS program that requires the GPS to connect to a Com port.  When connected, as soon as I ask the program to 'talk' to my computer it says that it cannot open the Com port.  It can 'find' the GPS when connected but cannot communicate.  I have a McAfee firewall but turning it off makes no difference.  I use Windows XP Home Edition.  Help
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Ian
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Re: Closed Com Port in Windows XP
« Reply #1 on: Apr 12th, 2004, 6:33pm »		 Quote Quote  Modify Modify
Check the following:-
 
COM ports (by which I mean the older serial ports, rather than USB) might need to be set up as if using a modem. Set speed to 9600 baud, hardware handshaking and 8-bit. This should set things to the point where the devices can negotiate a higher speed etc.
 
Also, check the Magellan software - IIRC, there's an option to change the COM port it tries first, and the order after than. I use COM2 rather than COM1 (which has an external fax-modem on it. If I want successful comms to any device (like Psion as well), then I have to tell it to use this port first. I also uncheck the others, so it only looks on COM2 and won't get bothered by any funny results from the modem. Make sure any settings in the Magellan s/w mathc the port setting in Windows.
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