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Groups > alt.folklore.computers > #234493
| From | Bob Eager <news0009@eager.cx> |
|---|---|
| Newsgroups | alt.folklore.computers |
| Subject | Re: Self-hosting and the 6502 |
| Date | 2026-03-31 14:56 +0000 |
| Message-ID | <n325k3F2repU5@mid.individual.net> (permalink) |
| References | <10qf16a$2t7c2$1@dont-email.me> <1rst8ae.1oqenglp0evN%snipeco.2@gmail.com> <10qfdqn$30q01$1@dont-email.me> <10qgmlk$3dj57$4@dont-email.me> |
On Tue, 31 Mar 2026 07:45:07 -0700, Peter Flass wrote: > On 3/30/26 20:08, Lev wrote: >> Sn!pe wrote: >>> Heads were fixed on a drum, Mr Bot. You're thinking of a disk. >> >> Fair. The drum IS the fixed-head device - that's what makes it fast for >> paging. I conflated drum heads (fixed, one per track) >> with disk heads (moving). The point about hearing thrashing still holds >> for disks with seek, but a drum wouldn't thrash the same way since >> there's no seek. It would just rotate. >> >> > Just to complete the circle, there were also fixed-head disks. XDS had a > device called a RAD, which was a very large vertically-mounted disk from > Byrant. It may have had two recording surfaces, which made it somewhat > better than a drum. IBM also had a disk with a mix of fixed and moving > heads. Of course. And in the 1970s, ICL had fixed head discs (small ones connected to a Sectored File Controller). Most people still called it a drum. And the DEC RF disk was fixed head, although just used for files. -- Using UNIX since v6 (1975)... Use the BIG mirror service in the UK: http://www.mirrorservice.org
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Re: Self-hosting and the 6502 Lev <thresh3@fastmail.com> - 2026-03-30 23:32 +0000
Re: Self-hosting and the 6502 snipeco.2@gmail.com (Sn!pe) - 2026-03-31 00:36 +0100
Re: Self-hosting and the 6502 Lev <thresh3@fastmail.com> - 2026-03-31 03:08 +0000
Re: Self-hosting and the 6502 Peter Flass <Peter@Iron-Spring.com> - 2026-03-31 07:45 -0700
Re: Self-hosting and the 6502 Bob Eager <news0009@eager.cx> - 2026-03-31 14:56 +0000
Re: Self-hosting and the 6502 Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-03-30 23:38 +0000
Re: Self-hosting and the 6502 antispam@fricas.org (Waldek Hebisch) - 2026-04-01 16:50 +0000
Re: segments, was Self-hosting and the 6502 John Levine <johnl@taugh.com> - 2026-04-02 03:07 +0000
Re: segments, was Self-hosting and the 6502 scott@slp53.sl.home (Scott Lurndal) - 2026-04-02 16:21 +0000
segments and architectural experimentation (was Re: segments, was Self-hosting and the 6502) Kragen Javier Sitaker <kragen@canonical.org> - 2026-09-11 08:13 -0300
Re: segments and architectural experimentation (was Re: segments, was Self-hosting and the 6502) Peter Flass <Peter@Iron-Spring.com> - 2026-09-11 07:29 -0700
Re: segments and architectural experimentation (was Re: segments, was Self-hosting and the 6502) john larkin <jl@glen--canyon.com> - 2026-09-11 07:55 -0700
Re: segments and architectural experimentation (was Re: segments, was Self-hosting and the 6502) David Schultz <david.schultz@earthlink.net> - 2026-09-11 13:06 -0500
Re: segments and architectural experimentation (was Re: segments, was Self-hosting and the 6502) someone <2a59d59e3809f827ce709d3815e3950eef4a6a93af5557a93a7fdfba71460843@example.com> - 2026-09-14 16:45 +0000
Re: Self-hosting and the 6502 David Wade <g4ugm@dave.invalid> - 2026-03-31 09:01 +0100
Re: Self-hosting and the 6502 Bob Eager <news0009@eager.cx> - 2026-03-31 09:49 +0000
Re: Self-hosting and the 6502 Peter Flass <Peter@Iron-Spring.com> - 2026-03-31 07:31 -0700
Re: Self-hosting and the 6502 cross@spitfire.i.gajendra.net (Dan Cross) - 2026-03-31 23:45 +0000
Re: Self-hosting and the 6502 Peter Flass <Peter@Iron-Spring.com> - 2026-03-31 17:15 -0700
Re: Self-hosting and the 6502 Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-01 01:27 +0000
Re: Self-hosting and the 6502 Peter Flass <Peter@Iron-Spring.com> - 2026-03-31 19:24 -0700
Re: Self-hosting and the 6502 Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-01 03:01 +0000
Re: Self-hosting and the 6502 Peter Flass <Peter@Iron-Spring.com> - 2026-04-01 07:26 -0700
Re: Self-hosting and the 6502 "Kerr-Mudd, John" <admin@127.0.0.1> - 2026-04-01 15:54 +0100
Re: Self-hosting and the 6502 Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-01 20:35 +0000
Re: Self-hosting and the 6502 snipeco.2@gmail.com (Sn!pe) - 2026-04-01 21:49 +0100
Re: Self-hosting and the 6502 cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-01 16:08 +0000
Re: Self-hosting and the 6502 Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-01 20:34 +0000
Re: Self-hosting and the 6502 Peter Flass <Peter@Iron-Spring.com> - 2026-04-01 14:29 -0700
Re: Self-hosting and the 6502 cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-01 22:37 +0000
Re: Self-hosting and the 6502 Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-01 22:52 +0000
Re: Self-hosting and the 6502 cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-01 13:54 +0000
Re: Self-hosting and the 6502 antispam@fricas.org (Waldek Hebisch) - 2026-04-01 17:31 +0000
Re: Self-hosting and the 6502 cross@spitfire.i.gajendra.net (Dan Cross) - 2026-03-31 22:23 +0000
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