METHOD FOR CHECKING ERRORS OF DATA DOWNLOADED TO FLASH MEMORY OF SUBSYSTEM FROM HOST SYSTEM

摘要

PURPOSE: A method for checking errors of data downloaded to a flash memory of a subsystem from a host system is provided to prevent wrong operation of the subsystem by checking the errors of the correction data received from the host system and stored in the flash memory, and repeatedly performing download/error checking processes if the error is generated. CONSTITUTION: The host system calculates the error discriminating information by performing operation for the correction data transferred to the subsystem(S10). After transferring the error discriminating information, the host system transfers the correction data to the subsystem and the correction data is stored in the flash memory(S30). The error discriminating information is generated again by performing the operation for the correction data stored in the subsystem(S50). The transfer error of the correction data is judged by comparing the error discriminating information of the host system with the error discriminating information of the subsystem(S60). A judgment result is displayed(S70,S80).