Alright, we have discovered why our current version of the Melody board is having issues with Light and Heavy Sixers. While Fred Quimby was researching this issue, he looked at the Heavy Sixer schematics and found a circuit that does not exist on any later Atari systems (four-switcher, Jr., 7800), and doesn't really seem to serve a useful purpose in the Sixers. This circuit also seems to cause problems with other games as well--for instance, River Raid II.   While we continue to work o
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