On Wed, 5 Sep 2001, Tony Duell wrote:
  I've just pulled out my copy of 'Beneath Apple
DOS', and the
 information you need doesn't seem to be in there. There's very little
 about the disk hardware at all -- it assumes you'll at least use the
 standard routines to read/write bytes on the disk. 
The info that Sean is looking for is in the Apple ][ DOS manual.  I have a
dozen or more spare copies of that manual.  If Sean will e-mail me
privately then I'll get one in the mail to him.
Sellam Ismail                                        Vintage Computer Festival
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International Man of Intrigue and Danger                
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