From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HTML_MESSAGE,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 32442 invoked from network); 2 Jun 2020 16:27:39 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 2 Jun 2020 16:27:39 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id F3C439CA95; Wed, 3 Jun 2020 02:27:37 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 15FF79C5E8; Wed, 3 Jun 2020 02:27:10 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=bsdimp-com.20150623.gappssmtp.com header.i=@bsdimp-com.20150623.gappssmtp.com header.b="Yhk0mqJc"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 5319E9C5E8; Wed, 3 Jun 2020 02:27:07 +1000 (AEST) Received: from mail-qk1-f177.google.com (mail-qk1-f177.google.com [209.85.222.177]) by minnie.tuhs.org (Postfix) with ESMTPS id 9E78493D46 for ; Wed, 3 Jun 2020 02:27:06 +1000 (AEST) Received: by mail-qk1-f177.google.com with SMTP id g28so12368686qkl.0 for ; Tue, 02 Jun 2020 09:27:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=mRlUVkXMQP5OZ1F7cNVLWZx/YA5aq49HDDNP/VzJjD0=; b=Yhk0mqJcCQrzktjIYTuggouJDBCyV+ZPaw8SXcBZDA32cvV5GHJx1b4oxKwtPGyeG0 mX/KfWyK0gg/1IMOu+/4B0UJ4rzW/Xgi4jfQHo7EQUse+wnp30pUJ+LTkbgsXMlC7dKN hA6JlMIklsEMQnF0XPmBmXbB2H2YIvjKLCQYo5EfWeciAbrVzYexeVbaYCQueW8t9azY GVcEDkWbjGPRV06PpU8FBnzOvncUrTeDlpHMWlBz2/UwBhxt0e+YpectPgU4yUYAHiyU Ks/2vUj2iKqNcrvr9UG9zf/zp9GBLBCFjFdDiifN89a/6WCA151YimgyVfrmxVPTsDSS rvxw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=mRlUVkXMQP5OZ1F7cNVLWZx/YA5aq49HDDNP/VzJjD0=; b=aC42IptB3Fe6Pr1TBPbl6XFgLczz7Itq9jx4Sv/li2HMNaUKc6H2ErR4SRYl+SdrYb vl6Z+lfLwdLbFuXU1YpJ/YGLJ+DO+2xOi3GKfKY+kYulrRyOU5eaHBd0c5uDWq68Q5IL BzPGD42Lt7L/Z00p39Oj2ZJ4UVuN1DWAPTmzZxzNgWN4Ukw5wnLTmJXYcqEY0tiKMKgX 8L4Xj827GFeFj8eiM8Junp33kfkjWvCCe/PoNBpJRPWYFFLNabfXuL5B63NghoA3sX94 g86sGkS3cQ4L5HgFyEfzt6nSY9Jmp2N1JdxFot7xHN1m68GA/ffFO0ZL0FMa22p80zIs /GZQ== X-Gm-Message-State: AOAM5310JGhbbz0/UcaGDJzwVeWGhPOeITg6CsShT8eYm58w0+bWbeLE /2WYdEaS4FeDNysSLZJKEJmPDhFid2z1P3jDZVi8ww== X-Google-Smtp-Source: ABdhPJz4sOfVybGw8ERw+aW6gwV6X+7Mu9HMk01EfsFuxZ5rL7+E7tpfejZdVYxCly9/kSSd2JVrbR06aBAdH8pTndY= X-Received: by 2002:a37:99c6:: with SMTP id b189mr23759369qke.240.1591115225617; Tue, 02 Jun 2020 09:27:05 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Warner Losh Date: Tue, 2 Jun 2020 10:26:54 -0600 Message-ID: To: Ronald Natalie Content-Type: multipart/alternative; boundary="000000000000d1f01505a71c61c1" Subject: Re: [TUHS] DEC RL01/RL02 RX01/RX02 Disk Image Creator X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: TUHS main list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000d1f01505a71c61c1 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, Jun 2, 2020, 9:45 AM Ronald Natalie wrote: > > > On Jun 2, 2020, at 9:52 AM, Clem Cole wrote: > > > The good news is that all the DEC systems used 512 byte fixed blocks much > later than LSX so driver support is doubtful. > > > Except on the RX=E2=80=99s. The RX01 was 128 byte sectors and the later= ones 256 > and a odd interleaving strategy. However, the boot block and the rest = of > the file systems (both UNIX and RT at least) > just aggregated the smaller (logical) sectors together to make a 512 byte > one. > RX50 also had weird interleaving... but it was quite the odd duck. Warner > > --000000000000d1f01505a71c61c1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Tue, Jun 2, 2020, 9:45 AM Ronald Natalie <ron@ronnatalie.com> wrote:
=


On Jun 2, = 2020, at 9:52 AM, Clem Cole <clemc@ccc.com> wrote:


The good news is that all the DEC systems used 512 byte f= ixed blocks much later than LSX so driver support is doubtful.=C2=A0
<= /div>


Except on the RX=E2=80=99s. =C2=A0 The RX= 01 was 128 byte sectors and the later ones 256 and a odd interleaving strat= egy. =C2=A0 =C2=A0However, the boot block and the rest of the file systems = (both UNIX and RT at least)
just aggregated the smaller (logical)= sectors together to make a 512 byte one.

RX= 50 also had weird interleaving... but it was quite the odd duck.

Warner

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