MiniScribe 3438 --- HELLLP!!!!

From: Don Maslin <>
Date: Wed Mar 17 00:31:57 1999

On Wed, 17 Mar 1999, Scott McLauchlan wrote:

> Hello All,
> At 08:06 PM 3/16/99 -0800, Jason Willgruber <> wrote:
> >O.K. I found that. There's still the conflict of wether it is RLL or MFM,
> >though. I guess I'll try it with the RLL controller that I have...
> I thought there was no such thing as a MFM or RLL *drive*. I thought that

That is sort of true. Amongst ST-412/506 interface drives, there were RLL
capable and MFM capable. Essentially, all RLL capable drives could be
used with an MFM controller. However not all MFM capable drives could be
used successfully with an RLL controller. As a matter of (sloppy)
shorthand, folks refer to RLL and MFM drives.

                                                 - don

> you only had MFM or RLL *controllers*. The important thing on the hard
> drive was the *interface* (in the case of the MiniScribe 3438, a
> ST412/ST506 interface).

> I seem to have a dim memory of RLL controllers being sold as a way to
> increase (double?) your disk space.
> As I remember, RLL controllers were much more fussy about cable length and
> media quality than MFM controllers, which meant that they didn't work all
> that well with cheap hard drives.
> Of course, I could be completely wrong...
> Regards,
> | Scott McLauchlan |"Sometimes the need to mess with their heads |
> | Client Services Division| outweighs the millstone of humiliation." |
> | University of Canberra |___________Fox_Mulder_"The_X-Files:_Squeeze"_|
> || |
    Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
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Received on Wed Mar 17 1999 - 00:31:57 GMT

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