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Date:      Wed, 21 Apr 1999 15:22:33 -0700
From:      "William Woods" <wwoods@cybcon.com>
To:        "Doug Rabson" <dfr@nlsystems.com>, "Jason Thorpe" <thorpej@nas.nasa.gov>
Cc:        "Jordan K. Hubbard" <jkh@zippy.cdrom.com>, "Alain G. Fabry" <fabry@coserve.org>, <freebsd-alpha@FreeBSD.ORG>
Subject:   RE: External modems on Alpha..... 
Message-ID:  <000201be8c45$73d8e960$224c93cd@william>
In-Reply-To: <Pine.BSF.4.05.9904212315140.85882-100000@herring.nlsystems.com>

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I was playing around in the SRM console and I see these things:

doing a "show con*"

brings up this........

console		graphics
control_disfd	enable
control_idema	enable
control_irq11	scsi		<<----
control_irq12	mouse		<<----
control_scsi_term	internal
controlp		on


What interests me here is the "control_irq" lines. I notice there is no line
for either com1 or com2. Now, I tries a "set control_irq4    com1" assuming
that this would set irq4 to com1, but when I rebooted the setting was no
longer there.

I am going to experament with setting this, not rebooting and seeing if this
takes care of any of the problems. If it does, I am going to assume that I
have a dead internal battery, replace it and try again....what ya think,
sound like n idea that might work?

> -----Original Message-----
> From: Doug Rabson [mailto:dfr@nlsystems.com]
> Sent: Wednesday, April 21, 1999 3:18 PM
> To: Jason Thorpe
> Cc: William Woods; Jordan K. Hubbard; Alain G. Fabry;
> freebsd-alpha@FreeBSD.ORG
> Subject: Re: External modems on Alpha.....
>
>
> On Wed, 21 Apr 1999, Jason Thorpe wrote:
>
> > On Wed, 21 Apr 1999 20:07:20 +0100 (BST)
> >  Doug Rabson <dfr@nlsystems.com> wrote:
> >
> >  > How does the NetBSD kernel cope with this problem on the
> alpha? I can't
> >  > see anything obvious in my copy of the source but it is
> somewhat dated.
> >
> > We (NetBSD) don't deal too well with it, either.  Although, our
> `com' driver
> > seems to be less prone to this problem due it its structure.
> I've driven
> > a serial port on an AlphaStation 200 at 56k before, no problem.
>
> Perhaps it might be worth trying to collaborate on a lazy masking
> interrupt scheme for *BSD/alpha in the future. At this level, the two
> systems are virtually identical (not surprising).
>
> Incidentally, you might also like to pick up the floating point software
> completion code from FreeBSD/alpha if you haven't already.
>
> --
> Doug Rabson				Mail:  dfr@nlsystems.com
> Nonlinear Systems Ltd.			Phone: +44 181 442 9037
>
>



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