[Coco] Re: Help needed: problems with RETRIEV(E)ing DSK images

Alex Evans alxevans at concentric.net
Mon Feb 6 20:53:40 EST 2006

On Feb 6, 2006, at 1:02 PM, Phill Harvey-Smith wrote:

> Ward Griffiths wrote:
>> The only difference between low-density and high-density (or SS  
>> and DS for
> Do you mean Single and Double density, I think Single and double  
> sided is determined by the number of heads in the drive :)

Actually he is talking about the difference in the data clock.   
Single and double density are actually encoded differently (FM vs  
MFM), but double (low) and (double) high density differ by the data  
rate, even the 2.88 M 3.5" floppies use the same encoding scheme, but  
at a higher data rate.

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