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Path: ...!feeds.phibee-telecom.net!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: John Savard <quadibloc@servername.invalid> Newsgroups: comp.arch Subject: Re: Oops (Concertina II Going Around in Circles) Date: Mon, 06 May 2024 11:10:17 -0600 Organization: A noiseless patient Spider Lines: 23 Message-ID: <1i3i3j1v60lddr7sstlhlttsh5mfuhumor@4ax.com> References: <kipj2j5be9kuv8rn770iq6neq2cvu3s5oi@4ax.com> <moae3jhjbcqarvfpkcorta8av7g896rm75@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Injection-Date: Mon, 06 May 2024 19:10:18 +0200 (CEST) Injection-Info: dont-email.me; posting-host="3084e56c93532a97ce5f3e35e97724c8"; logging-data="2830250"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+dCDPL2sjasG+6UFMcUOxoBlnDngp10zA=" Cancel-Lock: sha1:KGJmAivQN+uzsmfH3joJ3zr5NKk= X-Newsreader: Forte Free Agent 3.3/32.846 Bytes: 1718 On Sun, 05 May 2024 00:57:44 -0600, John Savard <quadibloc@servername.invalid> wrote: >The main opcode space for 32-bit instructions is now divided as >follows: > >3/4 for uncompromised memory-reference instructions. > >3/16 for uncompromised register-to-register operate instructions. > >1/16 for the header required for variable-length instructions. This is not quite right. 3/4 for uncompromised basic memory-reference instructions. 1/8 for other memory-reference instructions. 1/16 for uncompromised register-to-register operate instructions. 1/16 for the header required for variable-length instructions. John Savard