Hi Patrick
I think you might try looking at:
http://www.moria.de/~michael/cpmtools/
This stuff is specific to doing cpm stuff but the
basics are there. One should be able to modify this
quickly to deal with any format that the hardware supports.
I've not looked at it closely but suspect it has what you need.
Dwight
>From: "Patrick Finnegan" <pat_at_purdueriots.com>
>
>On Wed, 16 Oct 2002, Fred Cisin (XenoSoft) wrote:
>
>> Thanks
>> It has some good information, some errors, and some good and bad guesses
>> (such as saying that it is probably possible to read hard sectored disks
>> with PC hardware)
>
>If you're refering to 'fixed format devices', they seem to be referring to
>OS device nodes - such as "/dev/fd0h360", not physical (hard-sectored)
>devices/disks.
>
>> Are you trying to transfer files, or just read raw sectors?
>
>For now, I just want to be able to copy disks without having to resort to
>using teledisk on a machine running DOS.
>
>> Which "odd formats" are you trying to read?
>
>I was making a generalization... I've been able to successfully read
>RX-50's created with teledisk using this method:
>
>root_at_dualie:~# setfdprm /dev/fd1 qd sect=10 cyl=80 head=1
>root_at_dualie:~# dd if=/dev/fd1 of=myfd.img
>800+0 records in
>800+0 records out
>root_at_dualie:~#
>
>I've also been successful with an Osborne Executive disk written with
>teledisk:
>
>root_at_dualie:~# setfdprm /dev/fd1 dd sect=5 cyl=40 head=1 ssize=1024
>root_at_dualie:~# dd if=/dev/fd1 of=myfd.img bs=1k
>200+0 records in
>200+0 records out
>root_at_dualie:~#
>
>To me, it looks like the hardest part will be attempting to determine what
>format the disk is in, automatically. Any ideas? My best guess is to do
>a guess-and-check method, of course this would be tough to verify every
>possibility, such as varied sector sizes (although it would be possible).
>I'm guessing that I'll have to use a raw floppy ioctl to make that work.
>
>One last thing, I found a reference to a program that could decode
>teledisk 'normal' compression images in past postings to classiccmp, but
>it's gone away and I didn't grab a copy before it did. Anyone know where
>I could find it? Here's the original URL:
>
>http://www.conknet.com/~w_kranz/WTELEDSK.HTM
>
>Pat
>
>> --
>> Fred Cisin cisin_at_xenosoft.com
>> XenoSoft http://www.xenosoft.com
>>
>>
>>
>> On Wed, 16 Oct 2002, Patrick Finnegan wrote:
>>
>> > Quite a while ago (and maybe more than once) we had a thread on
>> > reading/writing 'odd' disk formats. I thought about it again, typed a few
>> > words into google, and found this:
>> >
>> > http://fdutils.linux.lu/Fdutils.html#SEC22
>> >
>> > It looks like setfdprm and superformat will do much of what's necessary in
>> > working with 'odd' format disks. I haven't played much with it yet, but
>> > I've verified it works for setting the density, heads, cyls, and
>> > sect/track of the disk to write to. However, it doesn't allow for
>> > setting an initial sector number - something that's necessary for some
>> > formats. Using the program "fdrawcmd" should overcome any obsticles, but
>> > will require more work to be useful.
>> >
>> > I just thought I'd pass this along in case people would find it useful.
>
>--
>"This fucking university has shown time and time again that it is
> completely fucking incompetent when it comes to employing technology"
> -- Anonymous
>http://dilbert.com/comics/dilbert/archive/images/dilbert2040637020924.gif
>
>
>
>
Received on Wed Oct 16 2002 - 18:45:01 BST
