COM Ports - how to configure?

  kp 23:23 15 Jan 2004
Locked

I have an Evesham laptop Athlon XP2000 running windows XP used for work. We have loaded some specialist software that is used with hardware connected to a serial port (no serial connector is available on the laptop so this is provided by a Belkin USB/serial converter). The equipment is configured to run on COM port 2 but needs to be the only device running on COM port 2 (otherwise it won't work). Other devices are apparently running on this port but we do not know which (?the mouse?). What I need to know firstly is, which devices are running where and how do I re-configure the COM ports so that the other devices currently using COM port 2 are moved to COM port 7 (Ports 1 to 6 are in use). The software and hardware manufacturers have advised these changes to run the equipment but will not make the changes themselves because they do not want to be responsible for any data loss. (Data loss is not important as everything is backed-up anyway but they still won't do it!). Any advice very welcome.

Cheers kp

  DieSse 23:29 15 Jan 2004

The only other device likely to be running on a com port is a modem.

Try going into the Device Manager, look at the modem properties - under the advanced tab it says which com port is in use. If this is com2 - then you've found the culprit. Try just changing it - I don't know what will actually happen - but it may help.

  DieSse 23:31 15 Jan 2004

Thinking again - it may be an infra-red facility using the com port. Try disabling this in the BIOS.

  kp 00:04 16 Jan 2004

DieSse - The modem is on COM port 3. In the BIOS the settings are not easy to see what is happening. In the COM ports setting, the options are listed as:
1) disabled
2) IR1, 2100, IRQ4
3) IR2, 2200, IRQ3 - selected
4) IR3, 2300, IRQ4
5) IR4, 2400, IRQ3
Then:

DMA settings for fast IR

1) DMA 5 - selected
2) DMA 6

Any ideas?

kp
3) DMA 7

  kp 00:08 16 Jan 2004

Oops sorry. This formatted so badly. Try again.

DieSse - The modem is on COM port 3.

In the BIOS the settings are not easy to see what is happening. In the COM ports setting, the options are listed as:

1) disabled

2) IR1, 2100, IRQ4

3) IR2, 2200, IRQ3 - selected

4) IR3, 2300, IRQ4

5) IR4, 2400, IRQ3

Then:

DMA settings for fast IR

1) DMA 5 - selected

2) DMA 6

3) DMA 7

Any ideas?

kp

  DieSse 00:33 16 Jan 2004

IR = Infra-Red. If you don't use the Infra-Red facility (or even if you do) - try disabling it altogether to see what happens.

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