| 摘要 |
PROBLEM TO BE SOLVED: To logically suppress the generation of memory collapsion by storing the data of users more than one in a 1st area, setting a 2nd area in the idle area, which is not used as that 1st area, and processing a command while utilizing the storage parts of 1st and 2nd areas. SOLUTION: When issuing an IC card, an EEPROM 66 registers a provider to provide a system utilizing the IC card, allocates the provider to the common area definition block or provider area definition block of the 1st area to be used by the provider and stores it. Then, the setting of a storage area as the 2nd area to be used by all the providers is stored in the idle area which is not used as that common area definition block or provider area definition block and while utilizing the storage parts of these storage areas, the command is processed by a sequencer. Thus, the generation of memory collapsion can be logically suppressed and the utilization efficiency of a memory can be improved. |
