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Received: from mopo.cc.lut.fi (mopo.cc.lut.fi [157.24.10.3]) by nacm.com (8.6.10/8.6.9) with ESMTP id JAA27264 for <executor@nacm.com>; Mon, 26 Jun 1995 09:13:58 -0700 Received: (from vilhu@localhost) by mopo.cc.lut.fi (8.6.11/8.6.6/1.17.kim) id TAA10987; Mon, 26 Jun 1995 19:13:35 +0300 Date: Mon, 26 Jun 1995 19:13:35 +0300 (EETDST) From: Tero Vilhu <Tero.Vilhu@lut.fi> To: Charles Hunter <huntercr@cs.purdue.edu> cc: Daniel Mota Leite <deq102@crazy.fe.up.pt>, Executor mailing list <executor@nacm.com> Subject: Re: 800K mac Disks In-Reply-To: <199506251304.IAA04788@lab11.cs.purdue.edu> Message-ID: <Pine.HPP.3.91.950626190914.10898A-100000@mopo.cc.lut.fi> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-paper@nacm.com Precedence: bulk On Sun, 25 Jun 1995, Charles Hunter wrote: > read or written to by DOS drives. Many older drives and systems like > C64, Amiga, and Macs have this style of disk drive where the speed of the > rotation varies with the location on the disk, x86 machines however Don't know about C64 but Amiga does NOT have drive with varying speed.. Amiga's hardware allows better control of the drive and the varying speed is made by turning disk motor on and off quickly. This allows reading of Macs 800k disks. Some older Mac emulators used it but it was discarded because multitasking had to be forbidden...