At one time I knew the key sequence that could be used to play space invaders on I believe a 8562A Spectrum Analyzer but I don't remember it. Does this ring a bell for anyone? Thanks.
I use to play this years ago in a previous job. I had a co-worker with a friend at HP (before I came to work for them), who was a firmware developer for the 8560 series, that gave me the code, since I had an early 8562A that still had it in the firmware (it has to be 880201 or earlier). I like the "We come in peace" mode
Here are the instructions on how to access it: