TR-DOS filesystem

TR-DOS is an operating system for ZX Spectrum personal computer with Beta Disc floppy drive interface. Despite being developed by British company Technology Research Ltd, it was not especially popular in the West, but was more popular in USSR and post-USSR in 80-90s.

5¼" and 3½" floppies (ZX Spectrum Beta Disc 5.25" floppy and ZX Spectrum Beta Disc 3.5" floppy) are used with the following formats:

Diskettes can be dumped to TRD files for use in emulators.

Links

 * Internal TR-DOS functions