A golf ball comprising a core and a cover formed of a cover resin composition is characterized in that the core has a hardness corresponding to a compressive deflection amount of at least 3. The leadwires and the thin metal wire are positioned within the blasting substance within the blasting container. The drive pin retention system further decreases the chance that the chain can break due to sheared dowel pins. The finite state machine extracts the command and the operation information from the register file and controls the internal memory and the flash interface portion to execute the command. A motor drives at least one set of rollers. The invention is retrofittable to current engine-driven generators and can also be incorporated into future designs.