Date: Tue, 13 Oct 1998 10:36:42 -0700 (PDT) From: Curt Sampson <cjs@portal.ca> To: Terry Lambert <tlambert@primenet.com> Cc: David Seifert <seifert@sequent.com>, alpha@FreeBSD.ORG Subject: Re: PALcode Message-ID: <Pine.NEB.4.02.9810131029400.6963-100000@ascetic.portal.ca> In-Reply-To: <199810122008.NAA21219@usr07.primenet.com>
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On Mon, 12 Oct 1998, Terry Lambert wrote: > I'm not married to ARC; I'd be just as happy with any other PALcode > that spanned the entire product line and didn't cost extra to obtain. > Perhaps the VMS PAL code would be a good fit.... Terry, I really think you should grab a copy of the _Alpha AXP Architecture Reference Manual_ and look at the PALcode descriptions to see what it does. I wouldn't care to make a definitive comment one way or the other on the feasibility of something like this, but the extent to which the PALcode you use affects your OS internal structures and works is surprisingly large. PALcode covers not only how you do your VM structure, but your interrupt and process structures as well. (The actual context switch between two processes is performed by PALcode, not OS code, for example.) cjs -- Curt Sampson <cjs@portal.ca> 604-257-9400 De gustibus, aut bene aut nihil. Any opinions expressed are mine and mine alone. The most widely ported operating system in the world: http://www.netbsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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