| 摘要 |
PROBLEM TO BE SOLVED: To recognize endian setting and to automatically execute conversion. SOLUTION: A ROM controller 107 of a memory controller 104 fetches data from a ROM 108 and discriminates the number of bits in the ROM 108 from fetched data and ROM bit width information in the ROM controller 107 and repeats the fetching of data from the ROM 108 until the bits becomes 32 bits. Obtained data is converted to have proper byte arrangement by which a command can precisely be understood by referring to the command peculiar to a CPU 101, which is preserved in a command table 106. When a conversion method is determined, code data from ROM 108 is sequentially converted by a byte swapping circuit 105 by the determined method and it is sent to the CPU 101. |
