* Original version which was always visible to software - first appeared in Amstrad action 16 (January 1987)
* 2nd version which has a manual switch to control visibility to software. (before September 1988)
* 3rd version which has an automatic switch controlled by PAL ICs to control visibility to software. This is called "2+" by Romantic Robot . It was mention in Amscene in Amstrad Action 33 (June 1988) and was first advertised in Amstrad Action issue 36 (September 1988).
==Anti-Multiface==