专利名称：PRIORITY PROCESSING CIRCUIT 发明人：SATO TOSHIO
申请号：JP2847218798zj001
申请日：19871111
但的组词公开号：JPH01125647A
耳聋丸
福的来历公开日：
节约的英文
19890518
专利内容由知识产权出版社提供
摘要：PURPOSE:To prevent the influence of an external interface fault to an internal bus by giving priority right to the internal bus when the external interface is hanged while the priority right is held by the external interface. CONSTITUTION:A priority processing circuit 4' transmits a write lecting signal WSL and a write responding signal WACK bad on the write signal WT received from an external interface 1. At the same time, the circuit 4' outputs a read lection signal RSL, a read lection signal RSL and a read answer signal RACK bad on the read signal RD received from an internal bus 2. When the interface 1 is hanged with the signal WT kept turned on, the signal WSL is turned off with the signal RSL received from the bus 2 and turned on. Thus the priority is given to the reading actions carried out at the side of the bus 2. Thus it is possible to prevent the influence the fault of the interface 1 to the bus 2 and to improve the reliability of a processor.
申请人：FUJITSU LTD
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