Push-scrolling

So, your masterpiece is going to have to be either a straightforward (upward?) vertically scrolling blast (with a choice of fast or faster still but both supremely smooth), a single flip-screen affair or a 'push-scrolling' jobbie where the screen scrolls in accordance with the main sprite.

I'm surprised you didn't notice anything wrong with the demo version on the Acorn Computing cover disc. I'm sure many would agree that the scrolling on Robocod is the jerkiest this side of push-scrolling, despite the fact that it is in a low-resolution 16 colour mode, which is very difficult to do, especially as most of the sprites in Robocod are not even masked.