Apparatus and method for main memory unit protection using access and fault logic signals
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United States of America Patent
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May 31, 1994
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N/A
app pub date -
Aug 20, 1992
filing date -
Jul 1, 1987
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Abstract
In a data processing system, apparatus and method for controlling the type of processing to which data signal groups can be subjected includes a page table entry format having a multiplicity of field positions for storing signals defining page access rights. In addition to the read/write access control, the signal group access rights can be determined by the current mode of operation of the data processing unit and the intended activity of the addressed instruction or data element (i.e., read, write or execute).
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