On Fri, Mar 11, 2022, 8:04 PM Chuck Guzis via cctalk <cctalk at classiccmp.org>
wrote:
On 3/11/22 18:32, Warner Losh via cctalk wrote:
There are no 5.25" USB floppies. Well, not
100% true (there are
values in the identifier strings that tell you it's a 1.2MB floppy vs
a 1.44MB floppy), but as a practical matter, you can't find them.
I've looked and gave up... That's how I wound up with my kyroflux +
TEAC drive (though a greaseweasel is a better choice these days)...
Not completely true--in the old USB 1.0 days, there were a very few
USB-to-floppy bridges that could talk 5.25' 250Kbit/sec-speak. SMC had
one such and I suspect that multi-chip implementations were also available
Yea, that's why I said almost. The standard interface just allows an LBA
and only certain fixed formats are defined that are very high level. This
isn't conducive to different formats, data rates, etc. Unless there are
nonstandard endpoints, all you can read is the 1.2MB diskettes... I spent a
lot of time making this work with the 1.44mb 3.5" drive on FreeBSD. It
can't even read 720k diskettes, at least the drive I had...
But given that few new people understand anything that's not Windows, it
would be a futile effort, I suspect.
True. It's likely easier to use an imager and TEAC if they are 360k
diskettes... or pay someone :)
Warner
All the best,
Chuck