| 摘要 |
PROBLEM TO BE SOLVED: To recognize arrival of an addition request message sent to a destination and the result of acceptance/rejection of the addition request message collectively in one piece of information.SOLUTION: A message transmitted and received between a game card unit CU and a game machine P, includes an addition serial number added and updated only upon the generation of addition request from the game card unit CU to the game machine P, besides a normal serial number. When the request is accepted, the game machine P returns the same addition serial number, and when the request is rejected, the game machine returns an addition serial number updated by subtracting 1 from the addition serial number. |
