| 摘要 |
A rewritable ROM file device. A directory 101, a FAT 102, and a rewritable area 103, whose data may be rewritten, are together called a special area of the ROM file 100. A buffer 200 is used to store only data of the special area. An access controller 300 copies the data stored in the special area to the buffer 200 before the special area is accessed for the first time. After the copying, the access controller 300 converts access to the special area of the ROM file 100 into access to the buffer 200. When the use of the ROM file device is finished, the data stored in the buffer 200 is returned to special area of the ROM file 100.
|
