11 Mar
2022
11 Mar
'22
7:57 p.m.
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)...
If these are the old 360k diskettes, then you'd be out of luck the USB
route.. But an imager would be on the order of $30 for the greaseweasel,
or similar, and another $40 for a working 5.25" drive and a few hours of
your time to set it up and figure it all out... So anybody copying the
disks for < ~$100 or $150 would be cost effective for this person...
If somebody DID make a 1.2M USB floppy, it would seem likely that they
OUGHT TO include the 360K option within it, . . . It ought to... but that's not defined in the
standard...
But, if 1.2M USB drives exist, or ever existed, they're R at RE
Well, it requires two different data transfer rates, two write durrents if
you want to WRITE, enough smarts to recognize what it sees, and software
that supports both sets of format parameters.
Nevertheless, designing a 1.4M without 720K support or a 1.2M without
360K support would seem to be unclear on the concept.
And, a properly designed 1.4M should be even able to handle BOTH PC 1.4M
and Mac 1.4M.
I'll cut them some slack on not supporting 160K, 180K, 320K, or being able
to provide lower level access (INT13H equivalent) for non-PC formats.
(Although that is obviously what I would want)
There was a time about 30 years ago, . . .
a couple different companies took tiny single boards, such as Ampro Little
Board, stuck them in a box with a floppy drive, and custom software that
included communication through serial port, and marketed them as things
such as "MACINTOSH drive for PC, AND OTHER, disks"!
--
Grumpy Ol' Fred cisin at xenosoft.com
I HOPE that the USB 1.4M drives handle 720K, . .
.
That's what I hoped when I bought it, but no joy. Even trying nonstandard
format values was no help. It would only read 1.44MB.