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, 03:39:09
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <5gdo3j1ccm8dcquklj5ushatq1mg8s1kmp@4ax.com>
References : 1 2 3 4 5
User-Agent : Forte Free Agent 3.3/32.846
On Wed, 8 May 2024 21:59:54 +0000, mitchalsup@aol.com (MitchAlsup1)
wrote:

May I suggest that sacrificing 16-bit instructions may give you the room
whereby typical applications require less space without the 16-bit insts
that with them !?!

Your suggestions are always welcome, given your great breadth of
knowledge.

My latest "extreme encoding position" means that 16-bit instructinos
are now relegated to a secondary instruction format that must be
indicated by a header. However, now they're 17 bits long instead of 15
bits long, so they can operate on any two registers in a 32-register
bank.

Having 14 instructions in a block instead of 8 instructions normally
lets me do more. I know that in your MY 66000 architecture, the
instructions have extra functionality that lets you combine things
like negation and increment with an operation. While I certainly could
try to add such a feature to my architecture - in fact, I did try that
in one Concertina II iteration - I'm afraid that, not having your
knowledge, I wouldn't be able to do it in a way that resulted in any
significant savings in the number of instructions required for a
program.

And if I tried to add flexibility, I'd end up with an instruction set
that looked like that of the VAX 11/780, which is not a direction to
go in if performance is a concern.

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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