alt Hacker NewsReminds me of an experiment that we did with TI calculators in the late 90s. Someone found that you can put an AM radio next to the calculator and it would beep based on what instructions were run on the Z80. There were some demos that played songs via 1 bit beeps like this, but since games actually have to run instructions, you couldnt reliably play background music during gameplay.
I was one of the people who added sound into a TI83 game. It ended up in my IceClimb game. Not particularly well done or anything, it's just there. I also didn't properly adjust the timing as the notes got higher, so it plays faster when you get higher in the level.