Re: ttyS0 is irq 4 not 3!

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#245

From: Ross Litscher
Date: Wed, 08 Apr 1998 00:00

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Chris Hotte wrote:
> 
> Keith Colbaugh wrote:
> 
> > Hi!
> > When my pc boots it tells me that ttyS00 is irq 4. It is supposed to be
> > irq 3. It is set that way on purpose 'cuz irq 4 is ttyS
> > That should be ttyS0 and ttyS2. What do I do to make it find and set
> > itself correctly?
> 
> Are you certain? The layout for base address and IRQ for serial ports on a
> PC is:
> 
> COM1     3F8,IRQ4
> COM2     2F8,IRQ3
> COM3     3E8,IRQ4
> COM4     2E8,IRQ3
> 
> And that is the default setup in the rc.d (or whatever) startup script
> directory for most linux distributions as I have found so far.
> 
> --
> Chris Hotte
> chris@machupo.ml.org
> 
> Do your part, fight the spam runners!
> Replace reply address with "chris@machupo.ml.org" in order to reply.

Is there a program or command that shows which peices of hardware are
using which IRQ's and any other info such as the com or serial port
involved?

thanks,
ross

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References: <3525d8fb.26924992@news.ihug.co.nz> <Keith.87b0@nesbbx.rain.com> <352AA8A0.25ABE88F@machupo.ml.org>

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From: Ross Litscher <Litscher.1@osu.edu>
Subject: Re: ttyS0 is irq 4 not 3!
Date: 1998/04/08
Message-ID: <352BF7C4.259@osu.edu>
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