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Xref: sserve comp.os.linux.development:2018 comp.os.386bsd.development:1321 comp.os.386bsd.misc:1267 Newsgroups: comp.os.linux.development,comp.os.386bsd.development,comp.os.386bsd.misc Path: sserve!newshost.anu.edu.au!munnari.oz.au!network.ucsd.edu!swrinde!cs.utexas.edu!uunet!nevada.edu!jimi!ftlofaro From: ftlofaro@unlv.edu (Frank Lofaro) Subject: Re: Has anyone written a Mac FS or Mac FS Access utilities for Linux or 386BSD? Message-ID: <1993Oct17.005214.15141@unlv.edu> Sender: news@unlv.edu (News User) Organization: University of Nevada, Las Vegas References: <CEv6Co.MA1.3@cs.cmu.edu> <29o4a1$r6u@u.cc.utah.edu> <29o58gINN2gb@no-names.nerdc.ufl.edu> Date: Sun, 17 Oct 93 00:52:14 GMT Lines: 12 Ah, the Mac disk thread again! ;) If the speed changing disks for the Mac 800K format use speed <= normal speed of a PC drive, you could just turn on and off the floppy drive motor by toggling the control bit really fast. Higher duty cycle (% on), higher speed. It would be a trouble to calibrate, might act different on different drives (different speed vs duty cycle curve, might not work well, could possibly hose the drive (?), etc). Linux has very fast interrupt handling, you could probably hook into the timer irq after upping the rate (ala the way the PC speaker device driver works)