Open-source floppy reader: the data separator/sync-er works!

Chuck Guzis cclist at sydex.com
Tue Apr 10 11:57:49 CDT 2007


On 10 Apr 2007 at 3:24, Jules Richardson wrote:

> I suspect it's just to read disks that don't start the track at the index 
> pulse (I'd wondered the same thing until his post about Amiga floppies).

The buffer on the CW is large enough to record much more than a 
single revolution of a diskette, so when dealing with diskettes of 
this type, I fill it up with larger sample.   Decoding then proceeds 
with the first good (complete) sector in the buffer.  I don't even 
bother to pay attention to the index pulse in this case--I just allow 
a certain amount of settling time after seeking and begin recording 
for a sufficiently long time to grab about a rev and a half. 

It's really no problem at all. 

Cheers,
Chuck




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