Wow, what have I started, I just mention the AY-3-8910 and bang I find that it's as old as I am. Just to say that at work (amusements, video games : slots : the like) we are still getting new machines, brand new, never been played (except for testing) with AY-3-8910's in with the Microchip name on yet they say they don't do them anymore. I think that someone has a big box full of them and keeps sending them to the amusement industry. PS, the SPO256-AL2 brings back memories, used one on a robot in a project a few years back, vioce worked, robot didn't :-( .