| 摘要 |
PROBLEM TO BE SOLVED: To enable the functional sharing of a memory between a plurality of buses at a low cost. SOLUTION: Bus systems 12 and 13 write "1" to a register for an interruption control part 36 through buses 22 and 23. The interruption control part 35 transmits interruption signals to a bus system 11 through interruption signal lines 24 and 25. The bus system 11 writes "1 " to a register for a switch control part 35 through a bus 21 on the receipt of the interruption signal from the bus systems 12 and 13 through the interruption control part 36. In conformation to this, the switch control part 35 controls a switch 34 to connect the bus 22 and the bus 23 to a memory 33 and a memory 32, respectively. This invention is applicable to an information processing device sharing a plurality of memories, for example, between a plurality of bus systems. COPYRIGHT: (C)2004,JPO&NCIPI
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