When I saw the demo decades ago I was also totally amazed by it. And only 4k. I reverse engineered it with the Turbo Debugger under DOS. Found that most of the

When I saw the demo decades ago I was also totally amazed by it. And only 4k. I reverse engineered it with the Turbo Debugger under DOS. Found that most of the code was repetitive to prevent a slow loop construct. So it would have fitted easily into a 1k executable .