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Posted

Hi all,

I have an executable that I control a robot on COM1 (all this on win98).

The executable has been compiled to output to COM1 and no way to change.

Now that the COM1 port is physically damaged, I got a usb-rs232.

But this leaves me on COM3 and I have the runs on COM1.

How can I do to turn in COM1 COM3?

thank you very much

bye


Posted

Firstly you have to disable the broken COM1 port, probably in BIOS, perhaps in Device Manager.

Secondly you have to reconfigure your USB Virtual COM port; there is probably an option in Device Manager provided by your device driver. If not, get a different brand of USB converter (for instance, if it's an FTDI device, this option is in the "Advanced" settings).

Joe.

Posted

If you also have a physical COM2 port, perhaps you can just swap them:

In BIOS:

  • swap COM1 and COM2 addresses and IRQ values

In Windows:

  • in System Properties->Device Manager->Resources unselect "Use automatic settings" for both COM1 and COM2
  • swap their Basic configurations.

In Hardware:

  • if you suspect a damaged connector, swap connector headers

In DOS this might work:

  • mode com1=com2

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