On Sun, 17 Mar 2002, Tony Duell wrote:
correct device
(/dev/fd0D720) with dd?
Not necessarily. /dev/fd0D720 assumes a 'PC like
format' -- that is to
say 512 byte sectors, 9 sectors/track, double sided, 80 cylinders. You
could have some other sector size (256 byte sectors were very common at
one time, and I have seen 1024 byte sectors).
Working from failing memory (not recently refreshed), and I already said
that I would NOT get around to looking it up today, ...
If I Recall Correctly, the ALtos MP/M DOES coinscidentally just happen to
run 9 sectors per track with 512 bytes per sector (80 tracks per side)
'Course the DIRectory data structures are CP/M, and unrecognizable to
MS-DOS/Windoze nor any flavor of Unix.
You can almost certainly read/write these disks under
linux using the
FDRAWCMD ioctl(), but you'll need to understand the PC disk controller to
write software using that.
True.
Or one could just write the code to operate the 765, or call the INT13h
subroutines.
fiddling to do. In any case there's no reason not
to use a normal PC
1/3Mbyte drive.
Hmmm. Tony's definition of "normal PC" must differ slightly from mine :-)
I don't think that I have any 1/3M drives on hand. Although 320K/360K
is close enough to call it that.
--
Grumpy Ol' Fred cisin(a)xenosoft.com