REMEMBER the good old days when all there was in the way of video games was ping pong? And then Space Invaders appeared and you couldn't get on a machine for love nor money. Well, for all nostalgia lovers, Computing with the Amstrad proudly presents a re-vamped version of this classic game. It is written in 99 per cent machine code with only the title screen in Basic. As ever, your mission is to prevent Earth from being invaded by hostile aliens, your only defences being five space cruisers and your own reflexes. The machine code is held in the data statements starting at line 590. If you renumber the program you must change the value of lin in line 550 to the first line of data. This is to ensure that the internal data validation routine works correctly. Because this sort of validation routine is not 100 per cent infallible make sure you save the program before you run it.  
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