ZX Spectrum Beta Disc 3.5" floppy

The ZX Spectrum Beta Disc 3.5" floppy is the 3 1/2" disk format used with ZX Spectrum computers, with the TR-DOS filesystem.

5¼" and 3½" floppies are used with the following formats (sources are unclear as to which of these formats are used with each of the sizes):

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

Links

 * Internal TR-DOS functions
 * Ad/review for disk drive