On Tue, Sep 11, 2012 at 10:00 PM, Al Kossow <aek at bitsavers.org> wrote:
On 9/11/12 6:50 PM, Mouse wrote:
Does
ftp.bitsavers.org just not support anonymous
FTP, or is something
broken?
there is no anonymous ftp on bitsavers
http://bitsavers.org/pdf/teac/FC-1/
Cool! Thanks! I have one of these but haven't ever tried to hook it
up to anything.
if you dig around, a bunch of folks have figured out
the mode select
commmands to set the format. I did a quick search but couldn't find
the teac document that describes the actual SCSI commands supported.
From what you've posted, I see that it supports
three modes - described
(in *raw* capacity terms) as 1MB (on DD media), 1.6MB, and
2.0MB (on
HD media). It seems that the drive supports FM or MFM-formatted
sectors at 256 bytes per sector, 512, and 1024, with as many sectors
as appropriate per track (so a "normal" PC DD floppy would be 9
sectors of 512 bytes per track - called "720K" commonly).
Besides the "obvious" application of reading/writing an ordinary "DOS
Floppy" (FAT12 filesystem, "720K" or "1.44MB" capacities), and
the
uncommon higher-density floppy format, what sorts of disks from
what sort of systems would be useful to read or write with this drive?
CBM 8-bit-systems disks commonly use 256 bytes per sector, but
they aren't FM or MFM, they are GCR. Are there any CP/M systems
that used 3.5" media that this could read or write disks for?
I don't tend to use floppies on a daily basis, but I'm always
interested in ways to archive old disks or create new disks from
image files to use with old equipment.
-ethan