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EnigmA Amiga Run 1997 February
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EnigmA AMIGA RUN 15 (1997)(G.R. Edizioni)(IT)[!][issue 1997-02][PLANET CD V].iso
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551conv.lha
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551conv.doc
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1996-12-18
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551conv is a program to convert various atari-800-diskformats, for example
to use them in an emulator or POKEYNoise.
Version:
1.00beta.
Requirements:
Amiga with Kick 1.3 or higher.
Guarantees:
Since this program is freeware, no guarantee for properly work is given,
although I did my best to eliminate all errors. Also I take no
responsibility for any damages caused by the program.
Usage of 551conv:
551conv -[s|d][a|d|f|x]<device|path|file> -[s|d][a|d|f|x]<device|path|file>
Ok, lets explain it...
551conv clearly, i think
- clear too
s|d source or destination
a|d|f|x .atr or real_disk or all_files_of_the_dir or .xfd
<device|path|file> the d-option requires a diskdrive
the a- and x-option requires a filename
the f-option requires a device or directory
Limitations:
Until now, a real_disk can be used only as source (if you need *really*
writing of a real_disk so tell me) and all_files_of_the_dir can be used only
as destination (same note as on real_disk).
Some examples:
551conv -sdDF2: -dxram:mynicedisk.xfd
converts a real atari-disk from DF2: into an .xfd image on ram:
551conv -saram:mynicedisk.atr -dfdh1:atarifiles/
converts all files of an .atr disk image to dh1:atarifiles/
Note:
There are 4 different formats of the new atari-800-disk-drive XF551 (they
will be recognized automatically):
single with 128 bytes x 18 sectors x 40 tracks x 1 side, fm-coded
medium with 128 bytes x 26 sectors x 40 tracks x 1 side, mfm-coded
double with 256 bytes x 18 sectors x 40 tracks x 1 side, mfm-coded
quad with 256 bytes x 18 sectors x 40 tracks x 2 sides, mfm-coded
The quad-format from only the XF551 will be converted correctly - that disk
drive uses side 2, track 40, sector 18 as logical sector $2d1 and
side 2, track 1, sector 1 as logical sector $5a0 - and theres no way to
check if that is correct (means you'll get crap when you try to convert
a such-formatted disk which was NOT written with the XF551).
That converter supports on double-density-disks only the correct .atr-format
which saves the sectors 1-3 in a length of 128 bytes and then sector 4 until
end in the correct sectorlength (means, no fillbytes are included like in
some weird .atr-files). Thats the same behaviour as the XF551 drive has.
Although every I/O is done with os-functions, it may happen that real-disk
reading wont work with some Amiga-Clones, and it will probably not work
with the Unix Amiga Emulator (cause it uses very low os-functions, like
raw disktrack reading).
Known Bugs:
On reading real disks (option d), giving a nonexistent drive lets crash
the program (when i have time, i'll fix it).
Author:
Achim Härtel
A.-Dürer-Str. 60
09366 Stollberg
E-mail: (Valid until 04/1997) achim.haertel@e-technik.tu-chemnitz.de
Other programs from me:
POKEYNoise - an atari-800-soundchipemulator for DeliTracker.