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Disk image utilities for Atari 8-bit emulators

Project description


Utilities to list files on and extract files from Atari 8-bit emulator disk images. Eventually, I hope to add support for these images to pyfilesystem.


Starting with ATRcopy 2.0, numpy is required.

Supported Disk Image Formats

  • XFD: XFormer images, basically raw disk dumps
  • ATR: Nick Kennedy’s disk image format; includes 16 byte header

Supported Filesystem Formats

  • XEX format: Atari executable files
  • Atari DOS in single, enhanced, and double density
  • KBoot format: a single executable file packaged up into a bootable disk image

Example Usage

To extract all non SYS files while converting to lower case, use:

$ python /tmp/GAMES1.ATR -x -l -n
File #0 : *DOS     SYS  039 : skipping system file dos.sys
File #1 : *MINER2       138 : copying to miner2
File #2 : *DEFENDER     132 : copying to defender
File #3 : *CENTIPEDE    045 : copying to centiped.e
File #4 : *GALAXIAN     066 : copying to galaxian
File #5 : *AUTORUN SYS  005 : skipping system file autorun.sys
File #6 : *DIGDUG       133 : copying to digdug
File #7 : *ANTEATER     066 : copying to anteater
File #8 : *ASTEROIDS    066 : copying to asteroid.s

Example on Mac OS X

OS X supplies python with the operating system so you shouldn’t need to install a framework version from

To prevent overwriting important system files, it’s best to create a working folder: a new empty folder somewhere and do all your testing in that folder. For this example, create a folder called atrtest in your Documents folder. Put a few disk images in this directory to use for testing.

Download or copy the file and put it the Documents/atrtest folder.

Since this is a command line programe, you must start a Terminal by double clicking on in the Applications/Utilities folder in the Finder. When Terminal opens, it will put you in your home folder automatically. Go to the atrtest folder by typing:

cd Documents/atrtest

You should see the file as well as the other ATR images you placed in this directory by using the command:

ls -l

For example, you might see:

mac:~/Documents/atrtest $ ls -l
-rw-r--r-- 1 rob  staff  92176 May 18 21:57 GAMES1.ATR
-rwxr-xr-x 1 rob  staff   8154 May 18 22:36

Now, run the program by typing python YOURFILE.ATR and you should see the contents of the ATR image in the familiar Atari DOS format:

mac:~/Documents/atrtest $ python GAMES1.ATR
File #0 : *DOS     SYS  039
File #1 : *MINER2       138
File #2 : *DEFENDER     132
File #3 : *CENTIPEDE    045
File #4 : *GALAXIAN     066
File #5 : *AUTORUN SYS  005
File #6 : *DIGDUG       133
File #7 : *ANTEATER     066
File #8 : *ASTEROIDS    066

Without any additional arguments, it will not extract files. To actually pull the files out of the ATR image, you need to specify the -x command line argument:

mac:~/Documents/atrtest $ python -x GAMES1.ATR
File #0 : *DOS     SYS  039 : copying to DOS.SYS
File #1 : *MINER2       138 : copying to MINER2
File #2 : *DEFENDER     132 : copying to DEFENDER
File #3 : *CENTIPEDE    045 : copying to CENTIPED.E
File #4 : *GALAXIAN     066 : copying to GALAXIAN
File #5 : *AUTORUN SYS  005 : copying to AUTORUN.SYS
File #6 : *DIGDUG       133 : copying to DIGDUG
File #7 : *ANTEATER     066 : copying to ANTEATER
File #8 : *ASTEROIDS    066 : copying to ASTEROID.S

There are other flags, like the -l flag to covert to lower case, and the --xex flag to add the .XEX extension to the filename, and -n to skip DOS files. So a full example might be:

mac:~/Documents/atrtest $ python -n -l -x --xex GAMES1.ATR
File #0 : *DOS     SYS  039 : skipping system file dos.sys
File #1 : *MINER2       138 : copying to miner2.xex
File #2 : *DEFENDER     132 : copying to defender.xex
File #3 : *CENTIPEDE    045 : copying to centipede.xex
File #4 : *GALAXIAN     066 : copying to galaxian.xex
File #5 : *AUTORUN SYS  005 : skipping system file autorun.sys
File #6 : *DIGDUG       133 : copying to digdug.xex
File #7 : *ANTEATER     066 : copying to anteater.xex
File #8 : *ASTEROIDS    066 : copying to asteroids.xex

Command Line Arguments

The available command line arguments are summarized using the standard -- help argument:

$ python --help
usage: [-h] [-v] [-l] [--dry-run] [-n] [-x] [--xex] ATR [ATR ...]

Extract images off ATR or XFD format disks

positional arguments:
  ATR            a disk image file [or a list of them]

optional arguments:
  -h, --help     show this help message and exit
  -v, --verbose
  -l, --lower    convert filenames to lower case
  --dry-run      don't extract, just show what would have been extracted
  -n, --no-sys   only extract things that look like games (no DOS or .SYS
  -x, --extract  extract files
  --xex          add .xex extension
  -f, --force    force operation on disk images that have bad directory
                 entries or look like boot disks

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