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Article View: comp.sys.amiga.tech
Article #5818

Re: AmigaOS/UNIX - A Suggestion

#5818
From: Peter da Silva
Date: Sat, 13 Oct 1990 23:30
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In article <8081@gollum.twg.com> david@twg.com (David S. Herron) writes:
> AmigaDOS programs must be able to control, exactly & precisely, the screen.
> But if you have to do a context switch at every system call you can
> pretty much kiss real-time goodbye.

This is true. Standard UNIX and real-time are pretty much incompatible.
But there's a hell of a lot of Amiga software that doesn't require real-time,
and more that would be usable on a 3000 despite the lack of realtime. Do
you really *care* if Blood Money occasionally pauses? Not OK for MIDI
work, but fine for the amount of realtime most people do.

Non-realtime display update for the normal UI is acceptable if it's fast
enough. Look at the NeXT or Intergraph UIs.

Plus, an aggressive AmigaOS compatibility box might be able to give you
realtime response behind UNIX' back.  Remember, you'd only need to be able
to support *one* AmigaOS compatibility box... it's multitasking!...  so you
don't have to worry about having the AmigaOS drivers preempting the UNIX
kernel. You could almost think of this as running UNIX under AmigaOS.

(though I'd want to turn this off unless I was willing to let AmigaOS hang
 UNIX... which I might well be willing to do).
-- 
Peter da Silva.   `-_-'
<peter@sugar.hackercorp.com>.
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From: peter@sugar.hackercorp.com (Peter da Silva)
Newsgroups: comp.sys.amiga.tech
Subject: Re: AmigaOS/UNIX - A Suggestion
Message-ID: <6789@sugar.hackercorp.com>
Date: 13 Oct 90 23:30:07 GMT
References: <606@macuni.mqcc.mq.oz> <298@pdxgate.UUCP> <6782@sugar.hackercorp.com> <8081@gollum.twg.com>
Reply-To: peter@sugar.hackercorp.com (Peter da Silva)
Organization: Sugar Land Unix - Houston
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