Green Book CD-ROM A standard {CD-ROM} format developed by {Philips} for {CD-i}. It is {ISO 9660} compliant and uses mode 2 form 2 addressing. It can only be played on drives which are XA ({Extended Architecture}) compatible. Many Green Book discs contain {CD-i} applications which can only be played on a {CD-i} player but many others contain films or music videos. Video CDs in Green Book format are normally labelled "Digital Video on CD" Green Book was obsoleted by {White book CD-ROM} in March 1994. (1994-11-02)