The Opus Discovery is a floppy disk interface for the ZX Spectrum.

Technical Specifications

Media

3.5" hard cased disks as used with Amstrad and Tatung computers.

Number of drives per system: 2

Storage capacity: 180 Kbytes per side

Number of tracks: 40

Number of sectors per track: 18

Sector size: 256 bytes

Formatting: approx. 17.5 sec

Cataloguing: approx. 4sec

Loading a screen: approx. 4sec