View Full Version : COM 1, COM @ Problem
07-11-2002, 06:46 PM
I have this old Compaq Pentium which has an Evergreen 233 upgrade. I wanted to add a SCSI reader and writer, so I installed an Adaptec card. There is a cheap ISA 28.8 KPS modem attached to it.
For some reason, the Modem is attached to COM 2 and I can't get it to COM 1. The guy who sold me the computer had some kind of Answering service( I think it was onboard) and it stated when I booted it up after I installed the hardware that there was a COM port conflict. So I tried removing the modem software, but it keeps installing it.
The device Manager says that COM1 is functioning, but the Modem is on COM2; therefore, I can't get hooked to my ISP.
I have tried uninstalling COM 1, uninstalling any Modem software, reinstalled the Modem, etc. I have booted it many many times with no luck.
How can I get COM 1 to recognize the Modem, or even get COM 2 to be recognized?
07-14-2002, 10:58 AM
Did you ever get an answer for this?
It's common for modems to be on COM2. Have you tested it to see if it will dial out? (windows has a dialer you can use to dial any number) If it works, reconfigure your ISP to use COM2.
IF you really want it on COM1, and from what you said, that answering thing is onboard, you might need to go into BIOS and turn it off. You didn't say if you had gone into there to do it but if it keeps installing COM1 it when you restart windows it sounds like you are going throught the control panel and just uninstalling the port and not the device using the port.
07-14-2002, 11:22 AM
It worked perfectly before I put in the SCSI card. I was thinking that maybe I should just change the modem to another ISA slot, although the way the chassis is designed, I amy not be able to do this. The motherboard lies on the floor of the case, so I may be limited just to the original ISA slot. I will see if there is an option in the BIOS to delete the calling device. Thanks!
P.S> I thought that there were 4 COM ports:1 & 3; 2 & 4
07-15-2002, 11:07 AM
The location of the card really shouldn't make a difference.
As for the COM ports, yeah there can be 4. Modems usually will take COM2 and the physical ports will be 1 and 3. If no modem is used or installed they will be assigned 1 and 2. I have seen them go 4 if the interupts have been played with but not common. :)
07-15-2002, 07:49 PM
Here is what the BIOS has to offer:
Serial Port 1:
2E8-2EF IRQ 3
2F8-2FF IRQ 3
3F8-3FF IRQ 4
3E8-3EF IRQ 4
Communication Port: Same 4 selections as above
Right now the Modem is on COM 2 IRQ 3
and the Communication Port is COM 1 IRQ 4
Shouldn't the Modem be on the same port as the COM port?
07-17-2002, 12:22 PM
You need to disable COM2. I would disable COM4 as well.
As for it working before the SCSI card, we can only speculate here. Plugging it into a different slot might make a difference as some MOBOs will scan the ports in a certain order and then assign resources in that order.
07-18-2002, 09:30 AM
I got it working!
I went to Control Settings and deleted the Modem. It rebooted, then I went to the BIOS and changed the Modem Address to agree with the COM1 Address. ( The Modem was originally on COM2). It found New Hardware as it booted up and it's working. Thanks, everyone!!
Powered by vBulletin® Version 4.1.12 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.