Article View: comp.sys.mac
Article #23330Re: Converting between Mac and MS-DOS
From: J.S.Shapiro
Date: Tue, 05 Jan 1988 22:41
Date: Tue, 05 Jan 1988 22:41
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In article <283@dbase.UUCP>, drc@dbase.UUCP writes: > > ...The fact that it doesn't work with the 3.5" drives > has something to do with different recording techniques between the Apple and > DOS worlds (I was told this, don't know it firsthand). I hope this helps. > > Dennis Cohen Yes, it's true. Way back when they put together the Apple I, Steve Wozniack came up with this frob called an IWM (for Integrated Woz Machine). This is a run length encoding scheme to get better disk usage. On the macs, this was put into a a PLA, and consequently you can't get around it.
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!rutgers!bellcore!faline!ulysses!sfmag!sfsup!shap From: shap@sfsup.UUCP (J.S.Shapiro) Newsgroups: comp.sys.mac Subject: Re: Converting between Mac and MS-DOS Message-ID: <2563@sfsup.UUCP> Date: 5 Jan 88 22:41:57 GMT References: <446@sdics.ucsd.EDU> <283@dbase.UUCP> Organization: AT&T-IS, Summit N.J. USA Lines: 13 Summary: Mac MS-DOS IWM disk formats