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From: John Savard <quadibloc@invalid.invalid>
Newsgroups: comp.arch
Subject: Re: Why I've Dropped In
Date: Sat, 26 Jul 2025 05:57:49 -0000 (UTC)
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On Thu, 22 May 2025 17:42:14 +0000, MitchAlsup1 wrote:
> On Thu, 22 May 2025 6:51:05 +0000, David Chmelik wrote:

>> What is Concertina 2?

> Roughly speaking, it is a design where most of the non-power of 2 data
> types are being supported {36-bits, 48-bits, 60-bits} along with the
> standard power of 2 lengths {8, 16, 32, 64}.

As this is such a fondly remembered feature, I have finally gotten
around to adding one header type to the ISA that enables it. I do,
however, carefully note that this is a highly specialized feature,
and thus it is not expected to be included in most implementaions.

John Savard