发明名称 |
Sperrschaltung für einen erweiterten Pufferspeicher |
摘要 |
In an information processing system comprising a main memory device, a plurality of processors, a system controller between the main memory device and the processors, and an extended buffer memory for carrying out a data transfer operation to and from the main memory device, the system controller comprises a communication lock circuit for selectively indicating a locked state and an unlocked state representative of a state of the extended buffer memory. The communication lock circuit is accessed to detect the state of the extended buffer memory each time when either a lock instruction or a lock release instruction is issued from each processor before a data transfer request is delivered from each processor to the extended buffer memory. |
申请公布号 |
DE68927747(T2) |
申请公布日期 |
1997.05.28 |
申请号 |
DE1989627747T |
申请日期 |
1989.03.28 |
申请人 |
NEC CORP., TOKIO/TOKYO, JP |
发明人 |
IKENO, MOTOKIYO, MINATO-KU TOKYO, JP |
分类号 |
G06F9/46;(IPC1-7):G06F9/46 |
主分类号 |
G06F9/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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