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Article View: comp.sys.amiga.tech
Article #4801

Re: MMU + A3000 + AmigaOS2.0 == Non-crashing system?

#4801
From: Peter da Silva
Date: Thu, 09 Aug 1990 23:29
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In article <21001@grebyn.com> ckp@grebyn.UUCP (Checkpoint Technologies) writes:
> In article <20889@grebyn.com> ckp@grebyn.UUCP (Checkpoint Technologies) writes:
> > Therefore, the way to get MMU protection for your applications is to
> > abandon application binary compatibility; and if you're going to do
> > this anyway, then why not just use Unix?

> In article <6303@sugar.hackercorp.com> peter@sugar.hackercorp.com (Peter da Silva) writes:
> >Real-time response?

> Valid point.  You could choose another appropriate real-time protected
> kernel.  I hear Mach is nice; I wish I knew more about it.

CMU will send you pretty full docs if you ask them. I don't recall the
address, try postmaster@cmu.edu. One point, though, is that Mach is not
yet real-time. Virtual memory and realtime have never been particularly
comfortable in bed together... and VM is basic to the Mach design.

One intriguing possibility is running virtual Amigas under Mach. I suspect
that you could write a custom pager for it that would give pretty close to
real-time response. You'd have to make AmigaOS do a suspend operation instead
of halting (I *assume* AmigaOS halts when there is no work to do).
-- 
Peter da Silva.   `-_-'
<peter@sugar.hackercorp.com>.
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Message-ID: <6322@sugar.hackercorp.com>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uwm.edu!zaphod.mps.ohio-state.edu!lavaca.uh.edu!uhnix1!sugar!peter
References: <2489@clinet.FI> <20889@grebyn.com> <6303@sugar.hackercorp.com> <21001@grebyn.com>

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From: peter@sugar.hackercorp.com (Peter da Silva)
Newsgroups: comp.sys.amiga.tech
Subject: Re: MMU + A3000 + AmigaOS2.0 == Non-crashing system?
Message-ID: <6322@sugar.hackercorp.com>
Date: 9 Aug 90 23:29:03 GMT
References: <2489@clinet.FI> <20889@grebyn.com> <6303@sugar.hackercorp.com> <21001@grebyn.com>
Reply-To: peter@sugar.hackercorp.com (Peter da Silva)
Organization: Sugar Land Unix - Houston
Lines: 24