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Date:	Sun, 21 Mar 2010 03:58:31 +0000
Message-ID:	<416096c61003202058s40c2f423p2fff76df652981f5@mail.gmail.com>
Subject:	Re: Cygwin vs Via C3: nothing happens, no output
From:	Andy Koppe <andy DOT koppe AT gmail DOT com>
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scott:
>>> I'm attempting to install on a Via EPIA-5000 (533Mhz C3/Samuel 2)
>>> without success... is this platform not supported?
>> =C2=A0 Hmmm, quite likely not. =C2=A0Everything in the Cygwin distro is =
compiled for
>> i686 or above CPUs. =C2=A0C3 is crippled, isn't it? =C2=A0No SSE/MMX, al=
l that stuff?
>
> According to the internets... the C3 purports to be a i686-class
> processor

Without CMOV or out-of-order execution, that seems a bit of a scam.

> and has MMX/3DNow

Wikipedia says that MMX support was incomplete until the "Nehemiah"
revision of the C3. (That also replaced 3DNow with SSE and added
CMOV.)

> but does not have the supposedly optional
> CMOV instruction that other processors of its class have.

For gcc, "i686" implies the presence of the CMOV instruction, because,
well, CMOV was introduced with the Intel 686 (aka Pentium Pro). Btw,
that was almost fifteen years ago.

Andy

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