At 2004-02-08 14:29, Uwe Zimmermann wrote: >What kind of cable did you use to connect the second com port? Was it >delivered with your motherboard? There is no standard layout for the >cable connectors on motherboards and you'll have to make sure to use a >matching cable for the connectors on your particular motherboard.
Correct. >You might start with comparing it to the cable attached you your other >com port - or you might even use this cable for test purposes... His other com port connector is soldered onto the mother board. (Strange that not both or soldered on, but if that is the case...). Things you can also do: - Buy a little box with two RS-232 connectors (generally 25 pins, but perhaps there are also 9-pins versions now) with 9 two-color LED's that indicate the state of the 9 most important lines. Very useful to have anyway. Ask at a local electronics store, or order via the internet. They should cost about $8. - Use a multi-meter. Outgoing channels should always be -12V or +12V and the output data-channel will flicker to the other voltage when data is being send. The input channel should be 0V. - Buy a PCI-card with extra ports. - Buy an USB to RS-232 box. (Usually also with other ports like printer ports). - Buy a data switch that can switch from one serial connector to one of two or four, by turning a knob. I have one with four so I can connect upto 4 devices to a single serial port, but I can use only one at the time of course. >rt> My MOBO is equipt with 2 COM Port,COM1 is build in >rt> into the board,soldered directly into the mobo,and >rt> there is a provision to add a second port,COM2. >rt> As my need increases for port, I just installed >rt> another COM port,COM2 via a cable with build in >rt> connector. >rt> I set my BIOS to auto assign IRQ for my PORT but I >rt> can't make it work. It's not likely that it's caused by IRQ settings. >rt> I go to Device manager for any conflict in my IRQ but >rt> found nothing. >rt> I used a diagnostic program that uses a LOOPBACK Plug >rt> to check my COM2 and the software told me that COM2 is >rt> Sending Data but not receiving it.. >rt> Is the fault in my MOBO?? That is also not very likely. Greetings, Jaap -- Author: Jaap van Ganswijk INET: [EMAIL PROTECTED] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
