Date   : Wed, 15 Dec 1999 10:01:34 +0000
From   : Chris Richardson <chris@...>
Subject: Re: Disc Format

Correction
I think have been staring at decimal and hex numbers too long today.

The format is 18 sectors per track (0 to 17)

Chris

Peter Hatton wrote:
> 
> On Wed, 15 Dec 1999, Chris Richardson wrote:
> 
> > 19 sectors per track (0 to 18)
> > 256 bytes per sector
> > 80 tracks per side
> > One disc is double sided, the others are single sided.
> >
> > The structure of the first couple of sectors resembles DFS.
> 
> Sounds like one of the few double denisty DFS formats that where floating
> around.  (Ordinary DFS uses 10 sectors per track) Watford sold a kit which
> enanled B owners to unplug their old Intel 8271? FDC and plug in a 1770
> board.  It also came with an enhanced DFS that would enable you to take
> advantage of the 1770's double density capabilities.
> 
> There was another more popular kit floating around as well, but the name
> escapes me.
> 
> Finally it could be a disc protection method, but if the whole disc is
> like this, I dont think this is likely.
> 
> Peter Hatton
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