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UART writes using windows procomm

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chesterk

Technical User
May 16, 2005
2
US
In an old DOS programm I have inherited. The inport and outport commands were used to directly write to a port address (ie. 3fc, 2fc) to control the RTS line directly. This was used as a digital I/O line for switching. I want to update this old DOS script to windows and this is my last hurdle. I have been looking at using the DTR line and opening and then closing a port (say com 2) however I still need com 1 to be able to function without interruption because it is contantly polling a radio for power out data. Does anyone have a clue how to accomplish this mess?
 
I have a DOS procomm programm that does it right now. I can set RTS high or low on command. The question is how to do it with windows procomm. If you are not familiar with hardware programming I understand.
 
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