Re: Oops (Concertina II Going Around in Circles)

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Sujet : Re: Oops (Concertina II Going Around in Circles)
De : quadibloc (at) *nospam* servername.invalid (John Savard)
Groupes : comp.arch
Date : 09. May 2024, 23:09:11
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <ofeq3j9ni63e7tmccf2qbkb9t0naui44ei@4ax.com>
References : 1 2
User-Agent : Forte Free Agent 3.3/32.846
On Thu, 9 May 2024 20:28 +0100 (BST), jgd@cix.co.uk (John Dallman)
wrote:

I think you've just added another couple of orders of magnitude to the
odds against that happening.

What, you don't think that an ISA that is capable of handlling an
instruction set two orders of magnitude larger than ordinary
instruction sets wouildn't have a highly sought-after feature, at
least for some niches?

Instructions are multiples of 16 bits in length, like on a Motorola
68000 or an IBM System/360, not multiples of eight bits like on x86...
so headers provide a way to add just a few bits to instructions
instead of adding a whole 16 bits, when that isn't needed.

And after devising a mechanism to use _three_ extra opcode spaces in
the instruction set... I merely decided to be proactive, and give the
architecture room for further expansion, by generalizing it a tad
more, and allow an additional 123 opcode spaces, potentially of equal
or larger size. (Larger because an additional opcode space could have
the bigger than 32 bit instructions all start with 1 instead of 1111,
and thus have more opcode space because of having a larger proportion
of longer instructions.)

John Savard

Date Sujet#  Auteur
25 Apr 24 * Oops (Concertina II Going Around in Circles)53John Savard
25 Apr 24 +* Re: Oops (Concertina II Going Around in Circles)44MitchAlsup1
25 Apr 24 i+* Re: Oops (Concertina II Going Around in Circles)2John Savard
25 Apr 24 ii`- Re: Oops (Concertina II Going Around in Circles)1John Savard
25 Apr 24 i+- Re: Oops (Concertina II Going Around in Circles)1BGB
8 May 24 i`* Re: Oops (Concertina II Going Around in Circles)40John Savard
8 May 24 i +* Re: Oops (Concertina II Going Around in Circles)3John Savard
8 May 24 i i`* Re: Oops (Concertina II Going Around in Circles)2MitchAlsup1
9 May 24 i i `- Re: Oops (Concertina II Going Around in Circles)1John Savard
8 May 24 i +- Re: Oops (Concertina II Going Around in Circles)1John Savard
8 May 24 i `* Re: Oops (Concertina II Going Around in Circles)35MitchAlsup1
9 May 24 i  +* Re: Oops (Concertina II Going Around in Circles)6John Savard
9 May 24 i  i+* Re: Oops (Concertina II Going Around in Circles)3MitchAlsup1
9 May 24 i  ii`* Re: Oops (Concertina II Going Around in Circles)2John Savard
9 May 24 i  ii `- Re: Oops (Concertina II Going Around in Circles)1Thomas Koenig
9 May 24 i  i`* Re: Oops (Concertina II Going Around in Circles)2MitchAlsup1
10 May 24 i  i `- Re: Oops (Concertina II Going Around in Circles)1MitchAlsup1
9 May 24 i  `* Re: Oops (Concertina II Going Around in Circles)28John Savard
9 May 24 i   `* Re: Oops (Concertina II Going Around in Circles)27John Savard
9 May 24 i    `* Re: Oops (Concertina II Going Around in Circles)26John Savard
9 May 24 i     `* Re: Oops (Concertina II Going Around in Circles)25John Savard
9 May 24 i      `* Re: Oops (Concertina II Going Around in Circles)24John Dallman
9 May 24 i       +* Re: Oops (Concertina II Going Around in Circles)21John Savard
10 May 24 i       i`* Re: Oops (Concertina II Going Around in Circles)20John Dallman
10 May 24 i       i +* Re: Oops (Concertina II Going Around in Circles)13John Savard
10 May 24 i       i i+* Re: Oops (Concertina II Going Around in Circles)10MitchAlsup1
10 May 24 i       i ii`* Re: Oops (Concertina II Going Around in Circles)9John Savard
10 May 24 i       i ii +* Re: Oops (Concertina II Going Around in Circles)6MitchAlsup1
11 May 24 i       i ii i+* Re: Oops (Concertina II Going Around in Circles)4John Savard
11 May 24 i       i ii ii+- Re: Oops (Concertina II Going Around in Circles)1John Savard
11 May 24 i       i ii ii`* Re: Oops (Concertina II Going Around in Circles)2MitchAlsup1
11 May 24 i       i ii ii `- Re: Oops (Concertina II Going Around in Circles)1John Savard
11 May 24 i       i ii i`- Re: Oops (Concertina II Going Around in Circles)1John Savard
11 May 24 i       i ii `* Re: Oops (Concertina II Going Around in Circles)2Thomas Koenig
11 May 24 i       i ii  `- Re: Oops (Concertina II Going Around in Circles)1John Savard
10 May 24 i       i i`* Re: Oops (Concertina II Going Around in Circles)2John Dallman
10 May 24 i       i i `- Re: Oops (Concertina II Going Around in Circles)1BGB
10 May 24 i       i +- Re: Oops (Concertina II Going Around in Circles)1BGB
11 May 24 i       i `* Re: Oops (Concertina II Going Around in Circles)5Anton Ertl
11 May 24 i       i  `* Re: Oops (Concertina II Going Around in Circles)4MitchAlsup1
12 May 24 i       i   `* Compiler use of instructions (was: Oops)3Anton Ertl
12 May 24 i       i    `* Re: Compiler use of instructions (was: Oops)2John Levine
13 May 24 i       i     `- Re: Compiler use of instructions1MitchAlsup1
12 May 24 i       `* Re: Oops (Concertina II Going Around in Circles)2John Savard
12 May 24 i        `- Re: Oops (Concertina II Going Around in Circles)1Thomas Koenig
5 May 24 +* Re: Oops (Concertina II Going Around in Circles)6John Savard
6 May 24 i+* Re: Oops (Concertina II Going Around in Circles)3John Savard
7 May 24 ii`* Re: Oops (Concertina II Going Around in Circles)2John Savard
8 May 24 ii `- Re: Oops (Concertina II Going Around in Circles)1John Savard
6 May 24 i`* Re: Oops (Concertina II Going Around in Circles)2John Savard
6 May 24 i `- Re: Oops (Concertina II Going Around in Circles)1MitchAlsup1
12 May 24 `* Re: Oops (Concertina II Going Around in Circles)2John Savard
12 May 24  `- Re: Oops (Concertina II Going Around in Circles)1John Savard

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