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=-1.0 required=5.0 tests=MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 30590 invoked from network); 27 Jan 2023 14:17:50 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 27 Jan 2023 14:17:50 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id B51964251D; Sat, 28 Jan 2023 00:17:44 +1000 (AEST) Received: from relay05.pair.com (relay05.pair.com [216.92.24.67]) by minnie.tuhs.org (Postfix) with ESMTPS id 91D6A42511 for ; Sat, 28 Jan 2023 00:17:41 +1000 (AEST) Received: from orac.inputplus.co.uk (unknown [87.112.203.70]) by relay05.pair.com (Postfix) with ESMTP id CEE2F1A27E9 for ; Fri, 27 Jan 2023 09:17:40 -0500 (EST) Received: from orac.inputplus.co.uk (orac.inputplus.co.uk [IPv6:::1]) by orac.inputplus.co.uk (Postfix) with ESMTP id 390792135B for ; Fri, 27 Jan 2023 14:17:40 +0000 (GMT) From: Ralph Corderoy To: tuhs@tuhs.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit In-reply-to: <85d0ee98-3686-b305-49d7-536589b5d3db@e-bbes.com> References: <20230125203805.4762218C083@mercury.lcs.mit.edu> <7w8rhpdczd.fsf@junk.nocrew.org> <20230126105626.72CD922168@orac.inputplus.co.uk> <85d0ee98-3686-b305-49d7-536589b5d3db@e-bbes.com> Date: Fri, 27 Jan 2023 14:17:40 +0000 Message-Id: <20230127141740.390792135B@orac.inputplus.co.uk> Message-ID-Hash: 3VAHWTOIITLPWK4BBMHYJMESMA7YO3KH X-Message-ID-Hash: 3VAHWTOIITLPWK4BBMHYJMESMA7YO3KH X-MailFrom: ralph@inputplus.co.uk X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Setting up an X Development Environment for Mac OS List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Hi, emanuel wrote: > And copying the archives to newer disks, newer mail systems so it will > hopefully survive ... Diverging onto floppy disks, the Greaseweazle is handy for moving the floppy-disk controller aside and getting the flux levels from the drive for interpretation by software but sometimes that's still too high level. Given floppy drives often have test points on the board, they can be used to obtain the signal from the head before the PCB has muddied its waters. https://scarybeastsecurity.blogspot.com/2021/05/recovering-lost-treasure-filled-floppy.html tells of doing this with an oscilloscope allowing the recovery of some old assembly code where the flux signal from the drive was too corrupted. So even if the pertinent hardware has trouble with old media, perhaps there's still hope. -- Cheers, Ralph.