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Article #3450

Re: Modem HELP!

#3450
From: Stanislaw Flatto
Date: Wed, 16 Jun 1999 00:00
40 lines
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Hi, I have seen this movie.
Have "el-cheapo" NE2000 clone, no jumpers and no software.
It requisited irq3 which belongs also to COM2 which on my box
feeds the modem. I have a modern BIOS which allows setting
different irq to COM2. Let it have 9 which defaults to 2.
Windows understood like a grown up, Linux was limping.
But the Linux kernel does not listen to BIOS but listens very
carefully to rc files. I noticed that while booting it tells me that
ttS1 has irq3 and later that eth0 uses the same.
OK, RTFM, go to rc.serial disable auto irq assignment, write
the assignments as I want, edit rc.local to call rc.serial and everything
works.
Hope this helps
Stanislaw.

andersen@mweb.co.za wrote:

> Hi, a little while ago I posted a help, a few people replied for which I am
> grateful. Thanks!  But still the thing don't work none! I have since dug
> deeper to the
> source of the problem, this is what I've discovered so far:
>
> UART Unkown
> ttyS3, IRQ 3 (these are also physically set on my isa Duxbury 56K V.90
> internal modem)
>
> The problem I get is something like 'device busy'. The modem-HOWTO
> suggests...
> "This problem can arise when DCD or DTR are not implemented correctly" -
> what the heck does this mean? Or there is an IRQ conflict, but I am under
> the
> impression that Kernels greater than ver 2.2 support IRQ sharing...
>
> Do I need to physically change my modem jumpers to IRQ 5?
>
> Any ideas? (before I clear my desk and take my pc apart) Windows somehow
> manages to run my modem on IRQ 11, is this possible under Linux?
>
> Thanks in advance...
> Erik
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From: Stanislaw Flatto <flatto@shoalhaven.net.au>
Subject: Re: Modem HELP!
Date: 1999/06/16
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