I have a little confession to make. I didn't start writing this project up until I had done a fair amount of work on Lunar Lander for the PDP-1. I wanted to get to a point where I was confident that I could make something reasonably good. I do the same thing with my hardware projects prototyping and testing before I announce. Part of why I do this is not wanting to fail in public, but also I don't want to set expectations and not come through.

So here is a demo of what I have so far. 

So what do I have?

• Display of LEM (5 orientations)
• Gravity
• LEM steering
• LEM engine (thrust)
• Display of horizontal and vertical velocities
• Terrain (such as it is, a work in progress)

Much left to do.

• Landing zones
• Fuel consumption
• Scoring
• Kickass explosions ;-)
• Sound effects?
• Make it fun

I will be doing a few more posts describing each facet of what I have done so far, but only if I feel that I can add some value to the subject matter. I will not be going into a lot of detail about the the PDP-1 architecture and corresponding assembler code. I strongly encourage anyone who wants to dive deeper into these topics to read Norbert Landsteiner's ICSS document.

I have added the source for this unfinished version of Lunar Lander PDP-1 to the Files section of this project (lunar_lander.txt). I will drop updated versions periodically as I add significant functionality.