amiga floppy disk reading experience

Keith M keithvz at verizon.net
Fri Jun 11 12:12:43 CDT 2010


On 6/10/2010 7:31 PM, Chuck Guzis wrote:

> What I was trying to say, but in a rather roundabout way.   Given
> that most common floppy data separators can accommodate at least a +/-
> 10% variation (or more) in long-term speed variation, a too-slow
> drive can easily write a sector that's way out-of-spec timing-wise on
> a track that's otherwise perfectly in spec.  It's necessary that any
> read algorithm be able to adjust to short-term (sector-to-sector)
> variations, as well as long-term (track to track) ones.

Chuck,

Thanks for the response.  I know you've advanced this position before. 
My relatively simple "time between pulses" method works probably 95% of 
the time.  It's getting this last 5% to read correctly where it looks 
like I'll need some more sophisticated algorithms.

Thanks

Keith





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