This is incredible. I remember those days - LOL. I had an SX-64 I found on sale that I replaced my Atari 800 with. Ahhhh, the memorizes. That SX-64 was a sweet rig for it's day.

I was impressed when I found a 128d in a junk car and it fired right up no problem, this is just insane. Must have come off of the original Pennsylvania assembly line and not the Cucknadian or Taiwanese that were both known for using shit solder and didn't clean PCBs properly before soldermasking.