UnMakAtr will take an bootable ATR image create with MAKEATR and extract
the original file.  (MakeAtr is a utility that takes an Atari Executable
and will make a bootable ATR image that is just large enough to hold the
file plus three boot sectors)


How to use MAKEATR to recreate the original file from the ATR
-------------------------------------------------------------

UnMakATR is used by simply typing from a DOS prompt:

UNMAKATR atrname.atr executable

Where atrname.atr is the ATR file to create and executable is an Atari 8-bit
executable.  Common extenders for executables are .EXE, .COM, .BIN, .OBJ or
even none at all with the extender as part of the name.  This program is
only for ATR created with MAKEATR and not other ATR images.  Usage on any
other ATR should give an error.


Problems
--------

There is only one error message the program gives.  It does not distinquish
between errors opening the input file, errors writing the output file or
errors caused by an ATR not created by MakeAtr.



How MAKEATR/UNMAKATR came about
-------------------------------

I was working on an ATR programmers library, when this came to mind.
Other items in the library that make it to future utilities or one
ultimate utility include:
ATR Directory sorter, ATR creation, ATR file extraction, ATR file insertion,
Shrink an ATR to fit its contents, ATR directory, File viewers & converters.

Anyone with information on Sparta Dos or other disk formats drop me a line.
I am also interested in algorithms for determining the DOS format of a disk.
Specifically MyDos 1050 Density vs Atari 1050 Density,  How to tell if a
disk is in Atari or MyDos format.  I think Mydos doesn't store File Number
within each sector along with the sector link information when there is above
a certain number of sectors.  Also complete Docs on DCM format would be
appreciated.


Ken Siders
mail:ken_siders@compuserve.com
http://ourworld.compuserve.com/homepages/ken_siders/atari.htm


Last Update 09/3/97