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From: valentin@cbmvax.commodore.com (Valentin Pepelea)
Newsgroups: comp.sys.amiga
Subject: Re: AMIX Release Date?
Message-ID: <11786@cbmvax.commodore.com>
X-Local-Date: 24 May 90 19:46:16 PDT
Date: 25 May 90 02:46:16 GMT
References: <1612@lpami.wimsey.bc.ca> <568.265bae49@waikato.ac.nz>
Reply-To: valentin@cbmvax (Valentin Pepelea)
Organization: Commodore, West Chester, PA
Lines: 22

In article <568.265bae49@waikato.ac.nz> hamish@waikato.ac.nz writes:
>
>> You would need, at the very least, a 68020 and MMU, or a 68030.
>                                       ^^^^^^^^^^^^^
> A 68010 and 68451 MMU will run Unix. Only trouble is the 451 isn't very 
> compatible with the 851. However an 851 can be hooked up to a 68010, by
> faking the co-processor connection with moves to the cpu space, by fiddling
> the alternate address space registers.

Actually, a 68020 is necessary because many instructions that the UNIX
operating system is using are available only on 68020+ processors. Admittedly,
a special version could be compiled that used only 68010 instructions, but
that would not be worth it. Speed-wise, the Release 4 kernel feels comfortable
on the 68030, providing it with a 68010 would result in rather shameful
performances.

Valentin
-- 
The Goddess of democracy? "The tyrants     Name:    Valentin Pepelea
may distroy a statue,  but they cannot     Phone:   (215) 431-9327
kill a god."                               UseNet:  cbmvax!valentin@uunet.uu.net
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