| 摘要 |
<p>PROBLEM TO BE SOLVED: To appropriately change the allocation of a program area and a data file area to flexibly cope with a using purpose and to uniformize the write and erasure of respective blocks. SOLUTION: As shown in [A], it is assumed that four blocks are secured from the block (t) as the program area. In this case, management information such as the number of times of the erasure of subordinate blocks t+1, t+2 and t+3 is integrated and stored in the block header of the leading block (t) as shown in [B]. At the time of changing such a program area to plural subdivided program areas or the data file area, the management information stored in the block header of the leading block (t) is referred to. Thus, the block of a change object is selected based on the number of times of the erasure for the respective blocks. Thus, the number of times of the write and erasure of the respective blocks is uniformized.</p> |
