A circuit board structure and a fabrication method of the same are disclosed according to the present invention. The controller may also be programmed to determine a second number of promotional gaming credits based on the first number of promotional gaming credits and at least one wager and to cause the promotional credit member processing apparatus to record the second number of promotional gaming credits on a promotional credit member. A preset number of cards from the card deck are dealt to each player. The method is effective for substantially reducing the PMD of optical fibers drawn when applying a spin function.