21 Jun
2001
21 Jun
'01
1:24 p.m.
On Thu, 21 Jun 2001, Edwin P. Groot wrote:
If it is CP/M format, the first track should be
SD, whether or not the
disk is formatted DD. That's how it is in the CP/M systems I have. I
Many of the best systemes are that way, but there are literally thousands
of disk formats that aren't.
figure you should at least be able to read the first
track and hopefully
there would be a signature of what machine it's from. What I would not
know is what interleave factor to use for the sector ordering; it seems to
vary from machine to machine. Start with the original IBM SSSD structure.
In addition to the sector sequence, for anything other than SSSD, you also
have to contend with different sector sizes, and as a result, different
numbers of sectors per track.
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
PO Box 1236 (510) 558-9366
Berkeley, CA 94701-1236