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From: news@cit-vax.Caltech.Edu (Usenet netnews)
Newsgroups: comp.sys.amiga
Subject: Re: controlling the Amiga drive
Message-ID: <1374@cit-vax.Caltech.Edu>
Date: Thu, 18-Dec-86 20:31:18 EST
Article-I.D.: cit-vax.1374
Posted: Thu Dec 18 20:31:18 1986
Date-Received: Fri, 19-Dec-86 02:54:26 EST
References: <8612180643.AA23822@cory.Berkeley.EDU>
Reply-To: tim@tomcat.caltech.edu (Tim Kay)
Organization: California Institute of Technology
Lines: 28
Summary: I doubt RLL could work on floppies

Organization : California Institute of Technology
Keywords: RLL
From: tim@tomcat.Caltech.Edu (Tim Kay)
Path: tomcat!tim

dillon@CORY.BERKELEY.EDU (Matt Dillon) writes:
>
>	On the same topic, does anybody know the RLL encoding scheme is
>viable on floppies?  I have yet to get my hands on RLL documentation, but
>I've heard it can be implemented on drives which support MFM encoding.

There are several new cards for the IBM PC that support RLL on many
of the drives that are now used with MFM.  However,
the new RLL cards won't even work with the standard 10 Mbyte XT
drives.  It has something to do with requiring thin-film plating, or
something else technical.  Therefore, I doubt it will work on
floppies.

Secondly, is 800K --> 1200K all that significant?  Also consider that
RLL often slows disk access down?

All of my (vague) information comes from reading reviews in PC, PC World,
etc.

Timothy L. Kay				tim@csvax.caltech.edu
Department of Computer Science
Caltech, 256-80
Pasadena, CA  91125