RLL vs. MFM

[Randy McLaughlin]

From: <Ming_Mae at hotmail.com>
Sent: Saturday, March 05, 2005 6:24 PM
> No you can't use a RLL with an MFM controller. Similar but not the same.
> Run length limited verses modulated frequency.
> I have an RLL controller laying around somewhere in an antistatic bag if 
> he
> is interested.

Yes you can.  RLL drives work just fine with MFM controllers.  The only 
"problem" is that you end up with only 2/3 of the stated data space.

FM, MFM, and RLL are all just encoding techniques.  RLL is a more efficient 
encoding method than MFM just as MFM is more efficient method than FM.


Randy