Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Frank Slootweg Newsgroups: comp.mobile.android,alt.comp.os.windows-10,comp.editors Subject: Re: What is an animal or an SSD drive? (Was: blah, blah, blah) Android editors Date: 16 May 2025 14:13:56 GMT Organization: NOYB Lines: 32 Message-ID: <1007o7u.4d8.1@ID-201911.user.individual.net> References: <1001v4m$2ftun$1@dont-email.me> <1002ar6.tqk.1@ID-201911.user.individual.net> <10077j8$3o72v$1@dont-email.me> X-Trace: individual.net 9kVe8OMcFXPe3yho+5qjkgpYrCtaTumy7sVuiZ+oNA7XlCx3mm X-Orig-Path: not-for-mail Cancel-Lock: sha1:v3mS30SdPteJGTQEGB9yzMDbUKY= sha256:4a6pchYGOZ/77WbzHvBkEqkQlgxcoPC701gWgpnpf7I= User-Agent: tin/1.6.2-20030910 ("Pabbay") (UNIX) (CYGWIN_NT-10.0-WOW/2.8.0(0.309/5/3) (i686)) Hamster/2.0.2.2 Xref: csiph.com comp.mobile.android:148480 alt.comp.os.windows-10:184475 comp.editors:106778 Daniel70 wrote: > On 14/05/2025 10:54 pm, Frank Slootweg wrote: > > Daniel70 wrote: > >> On 11/02/2025 12:00 pm, Lawrence D'Oliveiro wrote: > >>> On Mon, 10 Feb 2025 08:47:39 +0100, Arno Welzel wrote: > >>>> Lawrence D'Oliveiro, 2025-02-09 00:35: > >>>> > >>>>> So you never used core memory. > >>>> > >>>> Correct. But core memory is not intended as *persistent* memory, > >>>> even when it can be used this way. > >>> > >>> It was indeed regularly used that way. Consider that, on machines > >>> from the core memory era, there was no ?boot ROM?. The first-stage > >>> bootloader was typically around a dozen machine instructions or so, > >>> which had to be hand- entered using front-panel switches. > >> > >> I remember having to do that on a PDP-8 (was it??) in 1982-3. > > > > That seems rather late! > > For computing, yes, that might seem rather late ... but for its purpose > (Training us in how an Aust Army Direction Finding system worked) it was > quite reasonable. I don't know what the actual DF system used. I see! Yes. Defense Force systems have a very long lifecycle. In aerospace even longer, for obvious reasons. They used HP 21MX (16-bit) mini-computers in some missiles. At the time, it felt rather strange, letting an expensive computer self-destruct. Sadly enough, these days it's no longer strange at all! :-(