Changes
As the power supply was included inside the monitor, there wasn't an external power supply either.
If you bought an Amstrad CPC together with one of the green screen monitors [[Amstrad GT64/GT65 Green Monitor]]s however, you might have wanted the ability to play games on the colour TV-set later, so Amstrad also made the MP-1/MP-2 devices.
They provided the power needed by the CPCs, so that you didn't have to carry the monitor around just to have power, and a TV-modulator which modulated the monitor signal in a way that it could be seen on a regular TV-set.
