17 Mar
2002
17 Mar
'02
5:33 a.m.
On Sun, 17 Mar 2002, Douglas Quebbeman wrote:
Correct. (although being or not being GCR is irrelevant to the DRIVE) The
Altos diskettes that I'm familiar with are MFM "double density" (similar
to a "360K"), but with a narrower track providing 80 tracks at 96 tpi.
IIRC the
Floppy on an Altos 580 is DSQD.
Am I correct that while different from standard
DSDD, they are *not* GCR drives? What other machines might carry these drives, [?]
try:
http://www.xenosoft.com/fmts.html#720K
that is NOT an exhaustive list, merely the ones that I implemented in
XenoCopy.
can I
hook one up to a standard PC controller in a box
running DOS, [?]
YES.
You can do them with most 1.2M drives, with a few software complications.
But it IS easier if you hook up the right kind of drive, such as Teac 55F,
Tandon TM100-4, Mitsubishi 4853, Shugart/Matsushita/Panasonic/National
465. In which case, life is a little simpler if you lie to the CMOS and
say that they are 3.5" 720K.
and then duplicate the disks?
Maybe,
but NOT by using DISKCOPY, nor anything else that comes from MICROS~1!
With some calls to INT13h in a loop,...
or there were numerous commercial packages. (MY favorite is obvious)
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
PO Box 1236 (510) 558-9366
Berkeley, CA 94701-1236
NOTE: My ISP is having difficulties. If you have problems reaching me at
this e-mail address, you can leave a message at:
fcisin(a)merritt.edu