Date: Wed, 21 Apr 1999 23:18:04 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Jason Thorpe <thorpej@nas.nasa.gov> Cc: William Woods <wwoods@cybcon.com>, "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: <Pine.BSF.4.05.9904212315140.85882-100000@herring.nlsystems.com> In-Reply-To: <199904212150.OAA00432@lestat.nas.nasa.gov>
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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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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