WigSpliTTa6 wrote:
After the 255th level, Pac-Man locks up with an interesting split-screen effect. This lockup does not occur if, at the end of level 254, the number "255" appears at any point within your score
Actually, this is one of the "urban myths" regarding the split screen. Since there are not enough dots (even with the nine that regenerate with each turn) to trigger the completion of the level, there is no legitimate way past it.
Some players from the day used the rack test switch inside the arcade machine to flip past it. Several had claimed scores of 8, 9, even 12 million - all of which were determined fraudulent.