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Date: Mon, 7 Jul 1997 11:30:20 -0400 (EDT)
From: Alex Mondale <mondale@cais.com>
To: Wes Peters <softweyr@xmission.com>
cc: alex@mondale.com, questions@freebsd.org
Subject: Re: can't get PPP to linkup
In-Reply-To: <199707070529.XAA00256@obie.softweyr.ml.org>
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Thanks for the information, Wes. Unfortunately when I use IRQ5 on the
"second" (SIO2) port it ceases to work on my "other" operating system
(WinNT 4.0), where shared IRQs *are* possible. So guess I'm back to
square one, not having any extra IRQs in my system. I'll have to choose
between the two modems for Freebsd I guess.

 On Sun, 6 Jul 1997, Wes Peters wrote:

> Alex Mondale writes:
>  > Thanks, Wes. Unfortunately I have "set openmode active" already. The 
>  > problem may have more to do with an IRQ conflict (I have the USR on 
>  > SIO3 using the same IRQ as the 3Com.)... Any experience using two 
>  > ports with shared IRQ under FreeBSD?
> 
> It doesn't work.  There are a few limited devices which can share
> interrupts, as in the keyboard controller and PS/2 mouse controller, but
> you can't do this as a general rule in FreeBSD.  The kernel ISR handler
> needs to know which device interrupt routine to call.  You will need to
> reconfigure one of the two cards for a different IRQ, and then configure
> your kernel for the new setting.  The kernel configuration part you can
> do by booting with -c at the boot: prompt, and using the boot-time
> configuration editor.
> 
> -- 
>           "Where am I, and what am I doing in this handbasket?"
> 
> Wes Peters                                                       Softweyr LLC
> http://www.xmission.com/~softweyr                       softweyr@xmission.com
> 
> 
> 
>