Article View: comp.sys.amiga.tech
Article #10293Re: Do all 3.5 inch drives use the same encoding
From: Robert R. Burns
Date: Tue, 15 Nov 1988 20:56
Date: Tue, 15 Nov 1988 20:56
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In article <160@dms3b1.UUCP> dave@dms3b1.UUCP (Dave Hanna) writes: )... The controller in the Amiga has the ability to use )that [MFM] format, but the standard Amiga format uses GCR )(Group Coded Recording), which is also what the Apple II used... That's backwards. The Amiga was originally spec'd to read/write Apple II 5 1/4" disks (for BASIC program portability), then Paula was revised to read/write IBM PC (MFM) 5 1/4" disks, then we went with 3 1/2" MFM disks and the proprietary sector layout that allows the blitter to be used to advantage to read sectors. - Kodiak -- | / _ _|' _ |/ Bob Burns . . . . .---. . |/ (_)(_)|(_\|\ Ursa Major / \ |\ /| | | __ / \ |\ Kodiak \ _______/ A \| \/ |_|_|___|/ A \ | \ Software "Dedicated to the Science of Fun"\_________
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!super!udel!rochester!cornell!mailrus!ames!amdahl!oliveb!amiga!kodiak From: kodiak@amiga.UUCP (Robert R. Burns) Newsgroups: comp.sys.amiga.tech Subject: Re: Do all 3.5 inch drives use the same encoding Summary: bits: yes, sectors: no Keywords: MFM GCR Message-ID: <3110@amiga.UUCP> Date: 15 Nov 88 20:56:50 GMT References: <8811101847.AA22940@godzilla.eecg.toronto.edu> <160@dms3b1.UUCP> Reply-To: kodiak@tooter.UUCP (Robert Burns) Distribution: na Organization: Commodore-Amiga Inc, Los Gatos CA Lines: 17