Recreation of copter using jsgame0.js
Use Z and X to move left and right, and SHIFT to thrust upwards. When you inevitably die, press SPACE to start a new game.
The recreation of copter using jsgame0.js is based on the description of the gameplay.
I was not able the reverse engineer the assembly code.
Attribution
This code example is taken from Wireframe #8 Squeezing the Beeb: make a helicopter score attack game, pages 34-41. All code by Eben Upton.
Graphics by Sam Alder and Alex Carter, based on resources developed for an event at the Centre for Computing History in Cambridge.
Licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported.