Re: Graph-link: Error: Can't open communications port
[Prev][Next][Index][Thread]
Re: Graph-link: Error: Can't open communications port
> 2) Check to see how many serial ports you have (in the back of the computer).
>
> 3) At the DOS prompt type: MSD. Goto Serial Ports. Connect the graph
> link to a seemingly non-used port. An example of this:
> PORT COM1: COM2: COM3: COM4:
> BAUD RATE 14400 2400 N/A N/A
> ...
> COM1 is a modem...NOT serial port 1 as some people think. COM2 is serial
> port 1 or 2 depending on what your system setup looks like.
What is the point of this step? You don't seem to do anything with this
information.
COM1 can be a modem, or an RS232 port, depending on your setup.
> 4) Get out of MSD. Reboot the computer. Go into system setup. Find the
> Ports section and look at the Serial Ports specifically. Here is what my
> Serial Port options are (yours may be different):
> (The following was the way I had my ports set before I corrected the problem)
> Port 1: (set to disabled)
> Port 2: (set to COM2, IRQ 3)
> COM3/COM4: (set to 3EH/2EH) (make sure these are set exactly like this)
You mean 3E8h/2E8h, not 3EH/2EH.
> This should be the last time someone asks about a serial port conflict. If
> anyone does, just e-mail them this complete document. This document is
> also useful in other things such as installing a modem conflict free.
You are really just saying, try all the BIOS port settings in sequence,
matching them to the windows settings. You don't deal with IRQs or I/O address
conflicts. And many people don't have RS232 port settings that can be changed
through the BIOS.
> (TI's been looking for a single answer solution to this problem for a long
> time...well, they've finally got their answer!)
I don't think it's a very good answer.
References: