29 Apr
2010
29 Apr
'10
12:05 p.m.
The sector address headers, rather than use CHRN type
information,
use 2 bytes to number the sectors on the disk consecutively.
The odd thing is that on a few floppies, the data (and address
headers) is in the wrong place for that cylinder (e.g., track 3
contains the same address headers and data as track 9). I'm trying
to figure out if it's the customer's drive or his software (he's
halfway around the world from me).
Is it possible that cylinder 3 was marked as defective and replaced by
cylinder 9? Or perhaps the frist few cyliders were used to contain the
operating system, the uyser data started later and the sectors for that
were numbered from 0.
-tony