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Data processing system

阅读:276发布:2022-01-22

专利汇可以提供Data processing system专利检索,专利查询,专利分析的服务。并且PURPOSE: To prevent response to an alias signal by permitting two controllers to mutually execute an operation in asynchronization and by holding the alias signal when they are in a stable state.
CONSTITUTION: At the time of an writing operation, a bus control slave 105 connects an address from an address bus 205 to the address input terminal of a memory 207, energizes a memory writing signal and, moreover, connects a data signal to the data terminal of the memory 207 from a bus 205. When data is transferred to the memory 207 or latched by the bus control slave 105 for succeeding transfer, the bus control slave supplies an XACK signal. At the time of a reading operation, the bus control slave 105 is supplied to a DMA device 201 and retrieves data from the memory at a storage place address- designated by the address signal from the bus 205 which is connected to the memory 207 by the bus control slave 105.
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