Article View: gnu.misc.discuss
Article #75065Re: GNU Kernel and AT&T 3b1 - new life for old OS?
From: Ian Dall
Date: Wed, 14 Nov 1990 13:15
Date: Wed, 14 Nov 1990 13:15
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2544 bytes
In article <71395@iuvax.cs.indiana.edu> templon@copper.ucs.indiana.edu (jeffrey templon) writes:
>
>Hi,
>
>I have seen the posting on gnu.announce that the GNU kernel is about
>ready.
That is an overstatement based on how *I* read the announcement.
> There have been lots of rumours about this beast on the net, and
>now is probably the time to clear them up.
Note that I *don't* speak for the FSF (or CMU for that matter), but I
can make educated guesses at some of your questions.
>1) What is sort of the minimum hardware configuration on which the GNU
> kernel will run?
It is based on Mach. That means that the kernel proper qualifies as
"lean and mean". Unfortunately, operations which you typically expect
to be done by the kernel would be done by an Unix emulation process.
This does have an overhead but I wouldn't expect it to be that bad.
I think Mach depends pretty heavily on being able to do virtual memory
tricks. I wouldn't expect it to run on machines which can't support
demand paged virtual memory.
> A typical UNIX-PC (typical AT&T 3B1 - not a typical
> IBM PC clone running un*x!!) has between 40-70 M of disk, 1 to
> 2 M of physical memory, 4 M of virtual memory per process (I think
> there is hardware support for this, it's a 68010 machine.)
I suppose it depends on what the MMU is like. Weren't the pre 68020
a bit brain dead when it comes to memory management? Similarly, I
wouldn't expect Mach to work on a 80286. An 80386 should be fine.
>3) On what machines will there be official support to start with?
I would guess a Sun something or other but this is pure speculation.
After that, I guess it depends on who contributes ports!
--
Ian Dall life (n). A sexually transmitted disease which afflicts
some people more severely than others.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 1025b4,a34f66738e7e426a X-Google-Attributes: gid1025b4,public X-Google-ArrivalTime: 1990-11-14 05:15:47 PST Path: arc1-ca.pugleaf.net!gmdzi!unido!mcsun!uunet!munnari.oz.au!sirius.ucs.adelaide.edu.au!augean!sibyl!ian From: ian@sibyl.eleceng.ua.OZ (Ian Dall) Newsgroups: gnu.misc.discuss Subject: Re: GNU Kernel and AT&T 3b1 - new life for old OS? Keywords: GNU 3B1 7300 kernel mach configuration Message-ID: <887@sibyl.eleceng.ua.OZ> Date: 14 Nov 90 13:15:47 GMT References: <71395@iuvax.cs.indiana.edu> Reply-To: ian@sibyl.OZ (Ian Dall) Organization: Engineering, Uni of Adelaide, Australia Lines: 43 Posted: Wed Nov 14 14:15:47 1990