Just a quick question- Is there a difference between an Asteroids/Asteroids Deluxe upright or cocktail PCB? Is it a switch setting or chip change on the board or a whole new board?
It's the way it's wired in the cabinet. On the edge connector in a cocktail there are pins shorted. So you just need to make sure you have a cocktail wiring harness in a cocktail game.
Some games do have a cocktail switch, but I think all of the atari vectors do it with the wiring harness.
One minor addition: the oldest versions of Asteroids PCBs did not support cocktail mode; it was added at Rev C of the -01 thru -04 type boards. (The -05 & -06 type have it no matter the revision letter).