According to T. Sean: While burning my CPU.
>
> Thanks to Ray and Tom for their advice. I now have the new modem up and
> running on /dev/ttyS1 (which is linked to /dev/modem). As it turned out,
> and what Tom brought my attention to, attaching the modem to both ports
> was shorting the signals.
>
> On 4/2/99 03:26, Ray Olszewski at [EMAIL PROTECTED] wrote:
>
> [snip]
> >
> >Second, regardless of where you've been trying to attach the external modem,
> >you want it on /dev/ttyS0 . S1 and S3 share an interrupt, and you don't want
> >the added complication of dealing with that.
> >
>
> Reading through the Serial How-To, I see here that ttyS0 and ttyS2 share
> one IRQ and ttyS1 and ttyS3 share another. So, I guess that would be a
> problem if I were trying to use both modems siimultaneously (which, it
> now occurs to me, I was last night - trying to set up the new modem while
> downloading the latest kernel sources).
>
> >Third, the best app to use to look for a modem is minicom. It uses the
> >symlink /dev/modem, so set that up with the line "ln -s /dev/ttyS0
> >/dev/modem". Then using minicom, try to send an AT sequence to your modem
> >(any you know will do; AT&V (view active configuration) is a safe one to
> >try). Do this with the modem attached to each of the serial ports in turn
> >(one at a time, that is, not both at once), and you should find out which
> >is S0.
> >
>
> My reason for choosing kermit was that it is the communications tool used
> in the Serial How-To. I did try minicom briefly, but it wasn't
> immediately apparent to me how to speak to ttySx directly. So, I went
> and got kermit.
>
> >Finally, there may be an IRQ problem, depending on where your mouse and (if
> >you have one) NIC are located. Check "more /proc/interrupts" to make sure
> >IRQ 4 (S0) and 3 (S1) are either unused or assigned to the serial ports. If
> >IRQ 4 is being used by something else (rare in my experience) then that is
> >blocking access to the serial port and hence to the modem.
> >
>
> I need to write that "/proc/interupts" on a yellow sticky and put it
> somewhere in ready view. I have had reason to look at my IRQs several
> times lately, and I keep forgetting how to do it.
While your at it, take note that your whole system works thro' /proc.
You can even change default parameters via the /proc filesystem.
'man proc' will explain more, maybe you will need to read it a few times to
realy understand what it all means, but i can assure you its worth the time.
>
> Thanks and regards,
> Sean
>
>
> T. Sean (Theo) Schulze
> [EMAIL PROTECTED] [EMAIL PROTECTED]
> ****************************************************
> How large does the Internet need to get before the
> planet becomes self-aware?
Why is it that "LINUX" users know more about Computers than any DO$ user.
Have fun.
>
>
--
Regards Richard.
[EMAIL PROTECTED]
