27 Jul
2004
27 Jul
'04
3:46 p.m.
Fred Cisin wrote:
On Tue, 27 Jul 2004, Doc Shipley wrote:
Define "different hardware"? I have Amigas and an Amiga Catweasel
(Mk2, unfortunately), Macs from SE to G5, DEC (from RX02 to RX50, RX33,
and RX23, as well as the standard interface on later Alphas), and a
weird Siemens-Nixdorf MIPS box that also has a 3.5" floppy.
Bottom line requirement is that I be able to low-level format an 8"
floppy to RX02 format. IIRC, RT-11 can flip the switch from RX01 to
RX02 in an RX02 drive, right?
And I need to be able to accurately copy a bootable RX02 diskette to
a formatted blank.
I'd *like* to be able to take a disk image of a floppy as a file, and
to write that back out to floppy, but that's gravy.
Oh, and the PDP-11/04 I uncrated today has an SMS FD1100I board in it
that looks like a floppy controller, but I can't find out *anything*
about that.
Doc
The first order of business is an interface
cable for a standard ISA
floppy/IDE controller. I've found this pinout:
http://tinyurl.com/5c5fb
but no confirmation that it actually worked with a YD-180 drive,
which is what I have available.
That'll depend on some details and jumpers of the YD-180,
such as Disk Change v Ready, etc.
You might want to look at
http://www.dbit.com
(they also peddle a 5.25 to 8 inch adapter)
http://www.dbit.com/fdadap.html
Some PC FDCs will read single density, but
you'll need different hardware to handle the "mixed density" stuff.