Locomotion ?-?-83

This is assumed to be the final version.  Notice how the two EPROMs are labeled "MST" and "SLV" for Master and Slave (the number is the checksum).  Atari used Hi and Lo on their prototypes instead of Master and Slave, but it basically means the same thing.  The checksum is a number generated from the game code and was used to make sure a EPROM copied properly (if the code was off even by a byte the checksum would be wrong).

Special thanks to CPUWIZ for the scan of this prototype.