Pseudo virtual storage system

阅读:569发布:2022-02-12

专利汇可以提供Pseudo virtual storage system专利检索,专利查询,专利分析的服务。并且PURPOSE: To make virtual storage possible using normal CPU by attaining interrupting paging-in through CPU by a dummy instruction corresponding to page absence during address conversion and page reference operation.
CONSTITUTION: When CPU1 addresses high-speed read write memory 3 for address conversion of an external device, an address is converted into a physical address by memory 3 in an instruction fetch cycle. In this case, if no data is written in a page of actual storage unit 5, no flag is set in memory 3 and absence of a reference page is detected to generate a dummy instruction signal through controller 4. This signal serves as an interruption instruction and CPU1 leaves the content of a counter as it is and performs an interruption process for paging-in from external memroy unit 8 to unit 5. Therefore, pseudo virtual storage equivalent to a virtual storage system can be done by using normal CPU.
COPYRIGHT: (C)1980,JPO&Japio,下面是Pseudo virtual storage system专利的具体信息内容。

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