Solved

Using 3 COM-ports

Posted on 1997-05-23
6
169 Views
Last Modified: 2013-12-16
I have the next situation:
 
COM1 is connected to a terminal-line of a CP/M computer: works good.
COM2 is connected to a modem: works good
COM3 is connected to a MS serial mouse 2.1: does not work.
 
COM1 en COM2 are configured with normal IRQ's and I/O. COM3 is using IRQ10.
 In device-manager no conficts are shown. Everything looks good. Even the MS mouse is correct detected. But the mouse will not function.

Removing the ports and re-detection of windows95 didn't solve the problem.
0
Comment
Question by:data4
6 Comments
 
LVL 1

Expert Comment

by:wouterw
Comment Utility
did you add the com port yourself, or did win95 detect it???

you could try to remove all the ports, then win95 will detect them again....should work then...
0
 

Author Comment

by:data4
Comment Utility
Edited text of question
0
 
LVL 2

Accepted Solution

by:
jlu earned 200 total points
Comment Utility
Change mouse to com1, and change CP/M computer to com3 if its possible.
0
Do email signature updates give you a headache?

Do you feel like all of your time is spent managing email signatures? Too busy to visit every user’s desk to make updates? Want high-quality HTML signatures on all devices, including on mobiles and Macs? Then, let Exclaimer solve all your email signature problems today!

 
LVL 2

Expert Comment

by:eizens
Comment Utility
Check also, whether your mouse isn't switched to 3-button mode, sometimes it's a problem.
0
 

Expert Comment

by:gidonl
Comment Utility
Usually Most OS`s Are looking for a mouse on COM1/COM3.
Anyway in order for COM1/COM3 or COM2/COM4 to work together
U should notice the devices must not !!! and usually can not work together.
For example a Mouse on Com1 should work with a modem on com3
as long as they work seperatly.
when the modem initializes the mouse gets stuck because of an IRQ problem.

Basic COM / IRq Configuration COM1 3F8 IRQ4| COM3 3E8 IRQ4
                              COM2 2F8 IRQ3| COM4 2E8 IRQ3
0
 
LVL 1

Expert Comment

by:compmech
Comment Utility
IRQ4 is the designated address for COM3 generally a hardware setting either on the motherboard depending on the age or on the Serial card set by jumpers, this setting is either verifiable in your CMOS settings or generally on boot up you will see a list showing your system configuration Usually 3F8,2F8,3E8 appears to the right of the screen generally 2nd last line. I must assume that the fact you have a third COMM Port means you also have a fourth? If so the list above will also include 2E8.
Subsequently the same settings must be reflected in the Device Manager properties of COM3. Being 2F8 IRQ4.
Even though Windows95 indicates that the address is IRQ10 and all's well, the fact is the hardware in this instance is the deciding factor not the software .Win95 is having you on..
As for the mouse issue if the problem still is IRQ conflicts a PS/2 mouse will do the trick if all else fails. The're generally is a port connection on newer motherboards so the cost of the interface connection is cheap and easy to install. Then in the CMOS settings set the port connection to IRQ10, you will then be left without further conflict being that its obviously available.
0

Featured Post

Are end users causing IT problems again?

You’ve taken the time to design and update all your end user’s email signatures, only to find out they’re messing up the HTML, changing the font and ruining the imagery. What can you do to prevent this? Find out how you can save your signatures from end users today.

Join & Write a Comment

If you Lost your Administrator password for Windows XP, Vista, or 7 this CD will help you reset the password to blank so you can log in. Once in you should change that blank password to something!! Download the ISO on this page http://www.spl…
This is an article about Leadership and accepting and adapting to new challenges. It focuses mostly on upgrading to Windows 10.
This Micro Tutorial will give you a basic overview of Windows DVD Burner through its features and interface. This will be demonstrated using Windows 7 operating system.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now