
1) Disk file system
Found on
https://www.crosswordclues.com/clue/crossdos

CrossDOS is a file system handler for accessing FAT formatted media on Amiga computers. It was bundled with AmigaOS 2.1 and later. Its function was to allow working with disks formatted for PCs and Atari STs (amongst others). In the 1990s it become a commonly used method of file exchange between Amiga systems and other platforms. CrossDOS supports...
Found on
http://en.wikipedia.org/wiki/CrossDOS

The last remains of a software emulator for the Amiga called Cross-PC. It enables you to read and write to disks formatted on other machines, such as the PC, MAC, and ST. More information
Found on
http://www.amigahistory.co.uk/c.html
No exact match found.