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Re: pppd on an old 386: /var/log/messages




On Thu, 9 Aug 2001, Shaul Karl wrote:

> IRQ stands for Interrupt Request.
> Basically, when some device like a modem or network interface needs the system
> attention, it signal this need on a line (wire) which is supposed to be
> dedicated only for that device. This ensures that the system can tell which
> device asked its attention. Now when the system is not configured properly it
> could be that 2 different devices are using the same line to ask for the
> system attention. In this case, which is known as IRQ conflict, how can the
> system tell which device actually asked its attention?
>
> Note that this explanation is somewhat simplified but it is basically correct.

and yet misses the common case where the operating system thinks the
device uses one interrupt, whilt it actually uses another interrupt. this
is true for devices whose IRQ is configured using a dip switch or a
jumper on the device - as many old modems are, and your modem (used on a
386 machine) is most likely configured in this manner. i'd suggest you
find your modem's book, and see the section about setting IRQ and COM port
(or I/O address) - then check how it is configured.

--
guy

"For world domination - press 1,
 or dial 0, and please hold, for the creator." -- nob o. dy


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