23 Jan
2013
23 Jan
'13
10:50 p.m.
On 01/23/2013 08:24 PM, John Wilson wrote:
On Wed, Jan 23, 2013 at 08:50:32PM -0700, Dave Land
wrote:
Why not format them as SD? (Maybe I missed something.)
The max transition rate is the same -- media shouldn't know the diff.
With a double-sided drive, that's true. If you had a single-sided drive
and tried to use double-sided media in it, you might be disappointed
(the index hole is in a different position--DS drives usually have two
index sensors).
It's another of those oddball things--you can write 8" single-sided
media in a double sided drive, but not double-sided media in a
single-sided drive. Some DS 8" drives have an active signal that
reports back to the host that double-sided media is present.
If you've gotten stuck with a pile of hard-sectored media when you were
looking for some soft-sector blanks, many 8" drives can be jumpered to
separate the SECTOR pulses onto a different pin from the INDEX pulse.
So you can use them with a drive jumpered in such a fashion as soft
sector floppies.
--Chuck
Try
formatting up a SSSD 8" floppy using definition A1--DRI's standard
CP/M distro format for years. See if your 820-II like it.
Well, that blows that idea. I don't HAVE any SSSD disks, just DSDD.