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From: mitchalsup@aol.com (MitchAlsup1)
Newsgroups: comp.arch
Subject: Re: Oops (Concertina II Going Around in Circles)
Date: Fri, 10 May 2024 17:27:10 +0000
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John Savard wrote:

> On Fri, 10 May 2024 00:19 +0100 (BST), jgd@cix.co.uk (John Dallman)
> wrote:

>>Not that justified the costs of implementing such a huge instruction set.

> Well, having a huge instruction set defined and implementing all of it
> are two different things.

> Look at x86, how MMX got replaced by SSE which got replaced by AVX.

> So if one is going to include instructions that will later become
> obsolete, and be replaced by other instructions, not re-using the same
> opcodes helps with upwards compatibility.

Or skip to the end and only invent AVX while skipping the soon-to-be
redundant intermediate stages.

> John Savard