| 摘要 |
A memory system includes a read only memory (ROM) which stores first data, a master control unit which generates a first address for the first data, a random access memory (RAM) which stores second data used to modify the first data, and a comparison unit which accesses the ROM and the RAM, and sends read data to the master control unit based on the first address, the read data being obtained by replacing part of the first data with the second data.
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