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Date:      Wed, 21 Apr 1999 15:41:26 -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:  <000001be8c48$17560580$234c93cd@william>

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Well, that diden't do it........back to square 1

> -----Original Message-----
> From: William Woods [mailto:wwoods@cybcon.com]
> Sent: Wednesday, April 21, 1999 3:23 PM
> To: Doug Rabson; Jason Thorpe
> Cc: Jordan K. Hubbard; Alain G. Fabry; freebsd-alpha@FreeBSD.ORG
> Subject: RE: External modems on Alpha.....
>
>
> 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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