Atri ATR disk image tools

Tools to create, list and extract Atari ATR disk images.

mkatr: Create ATR images from list of files

This program creates Atari ATR disk images from a list of files given in the command line, in the SpartaDOS / BW-DOS disk format.

Usage:

mkatr [options] output [+attributes] filenames

Options:

• -b Selects the next file in the command line as the boot file, the file will be loaded when the computer boots, and must be in the standard Atari binary file format. The bootloader for 128 bytes per sector needs 613 bytes, from $700 to $965, and the bootloader for 256 bytes per sector needs 848 bytes, from $700 to $A50, both can be relocated with the -B option.

• -x Output image with exact sector count for all available content. This will use non-standard sector counts, and return images with 128 bytes per sector if the image is smaller than about 8MB.

• -s Specify the minimum size of the output image, in bytes. The image will be of this size or larger instead of the smaller possible. This allows creating images with available free space. Using this option with the -x option allows generating images of specific sizes (up to the sector size).

• -B Specify the page (high part of address) of the start of the bootloader. Use this option to load games or other software with a low loading address that conflicts with the standard address of the bootloader. A safe value is from page 6 instead of the default page 7, but page 4 or 5 is also possible.

• -h Shows a brief help.

• -v Shows version information.

Also, in front of each file name you can optionally add a list of attributes to be set for that file:

• +p Marks this file as protected (read-only).

• +h Hide file from directory. This only works in SpartaDOS-X.

• +a Marks the file as "archived". This only works in SpartaDOS-X.

To place files inside a sub-directory, simply add the directory before all the files inside that directory.

The resulting image will be the smaller size that fits all the given files (or the minimum specified with -s), from the following list (except when the -x option is used):

Sector Count	Sector Size	Total Size	Name
720	128	90k	SD
1040	128	130k	ED
720	256	180k	DD
1440	256	360k	DSDD
2048	256	512k	hard disk
4096	256	1M	hard disk
8192	256	2M	hard disk
16384	256	4M	hard disk
32768	256	8M	hard disk
65535	256	16M	biggest possible image

lsatr: List and extract contents of ATR images

This program list or extracts the contents of an Atari ATR disk image.

The supported formats are:

• Atari DOS 1, single density.
• Atari DOS 2.0, single and double density.
• Atari DOS 2.5, enhanced density.
• MyDOS, up to 16MB images.
• SpartaDOS and BW-DOS, up to 16MB images.
• LiteDOS 2.x and LiteDOS-SE.
• BAS2BOOT images, extracts the BAS file inside.
• Howfen DOS images, extracting the raw BOOT images.
• K-file boot images, extracts the XEX file inside.

Usage:

lsatr [options] filenames.atr

Options:

• -a Shows the listing in the same format of native Atari tools, this is the file name separated by spaces to the file extension, followed by the size, date and time (if available), and each sub-directory in a separate listing. Standard listing format shows the size, the date, time (if available) and the full path at the end.

• -l Show or extract all filenames in lowercase.

• -x Extract all files in the current directory.

• -X Extract all files in the directory given as argument to the option. If the directory does not exists, it will be created first.

• -h Shows a brief help.

• -v Shows version information.

Usage Examples

To create an image named disk1.atr with all the files in the "atari" directory:

mkatr disk1.atr atari/*

To create a bootable BW-DOS image with a hidden and protected DOS file inside a subdirectory and a protected startup.bat file outside:

mkatr bwdos.atr dos/ -b +ph dos/xbw130.dos +p startup.bat

To create an image with only one file that will be loaded at boot:

mkatr game.atr -b mygame.com

To list the files inside an image:

lsatr bwdos.atr

To extract all files from the image to a folder out:

lsatr -X out/ bwdos.atr

Compilation

Compile with make and copy the resulting mkatr and lsatr programs to your bin folder.