* Graphics/levels would not need to be designed for a wider screen (320 compared to 256)
* For the Amstrad, a 320x200 screen normally takes 16K, but when reduced in size it takes 12K.
=====Mode 0 and screen dimensions=====
When using mode 0, the screen can be reprogrammed to use the same sized screen as when using mode 1. However the resolution would be 128x192. The amount of RAM used by the screen is the same as if mode 1 was used.
=====Random numbers=====