| 摘要 |
PROBLEM TO BE SOLVED: To provide an address mapping method facilitating memory control, surely storing a boot loader area without increasing the number of part items and a mounting area, and securing a memory area in a memory device as one continuous area. SOLUTION: One part 101' of a capacity is allocated in the boot loader area 102 of an execution start program area in an external CPU, as another address different from one in an ordinary area 103 for ordinary address mapping in a system memory space, in a memory device 101, and is stored by additional-address-mapping. That is, the area is allocated as the one part 101' of the capacity in the uppermost side of the memory device 101, because the MIPS CPU starts from 0x1FC00000, and the one continuous wide area is secured thereafter as the memory area to store the boot loader area 102 used for the additional address mapping. COPYRIGHT: (C)2008,JPO&INPIT
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