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- From: nijhuis@isg.llnl.gov (Jan A. Nijhuis)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: RE: RLL & MFM
- Message-ID: <145880@lll-winken.LLNL.GOV>
- Date: 12 Jan 93 21:16:32 GMT
- Sender: usenet@lll-winken.LLNL.GOV
- Distribution: na
- Organization: Lawrence Laboratory Livermore, CA
- Lines: 24
- Nntp-Posting-Host: isg.llnl.gov
-
- From: ICVXV@ASUACAD.BITNET (S.Visveshwara)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: RLL & MFM
-
- Hi,
- I would like some information regarding the difference between the above.
-
- ==========================================================
-
- One is from the Bronze Age the other is from the Iron Age. ;-)
-
- They are essentially the same thing. RLL (Run Lengh Limited) is a variation
- of MFM (Modified Frequency Modulation)
-
- MFM uses 17 Sectors/Track, RLL uses about 25, Advanced RLL (ARLL) uses about
- 33 Sectors/Track. It's just a scheme to pack more data into a given area.
-
- --
-
- Jan A. Nijhuis,
- nijhuis@isg.llnl.gov
-
- Two wrongs do not make a right, but three will get you back on the freeway.
-
-