| 摘要 |
PURPOSE:To hold correspondence between the content of an EEPROM and the content of a link table as much as possible by providing a flag area set in the state that data write to the EEPROM is required and reset in the state that the write is ended in the link table. CONSTITUTION:When an address is inputted in a memory card from the outside for the data write and a matter that the data write is required is detected by a micro computer 14, the micro computer 14 sets a flag to the flag area of 1 bit set in the link table 13. Thereafter, the computer 14 writes a series of data in the EEPROM 12 and resets the flag when the computer 14 detects that the rewrite of the table 13 is ended. When the coming out of a live-line and a power cut, etc., occur while writing the data, the flag set in the flag area of the table 13 is not reset but remained in a set state as it is. Thus, the correspondence between the recording content of the EEPROM 12 and the content of the table 13 is held as much as possible by taking various kinds of measures. |
