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Patent

Communications control apparatus for the use with a cache store

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TLDR
In this article, a communications control apparatus prepares for the generation of an interrupt signal along with appropriate address signals to retrieve data information from the main memory store upon the request from the central processor.
Abstract
A communications control apparatus prepares for the generation of an interrupt signal along with appropriate address signals to retrieve data information from the main memory store upon the request from the central processor. During preparation time, a tag directory is searched for an indication that the data information required is presently in the cache store. If a comparison is made, a match signal is generated to prevent the generation of the interrupt signal. The communications control apparatus addresses the cache store to retrieve the data information for use by the processor.

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Citations
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Cache memory utilizing selective clearing and least recently used updating

TL;DR: In this paper, an apparatus for providing faster memory access for a CPU by utilizing a least recently used scheme for selecting a storage location in which to store data retrieved from main memory upon a cache miss.
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References
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Patent

Memory system with logical and real addressing

TL;DR: In this article, a memory system is disclosed for use in a multiprocessing environment where each processor has associated with it a buffer memory and means are provided for one buffer to retain a modified copy of data.
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Parallel addressing of a storage hierarchy in a data processing system using virtual addressing

TL;DR: In this paper, a data processing system includes a central processing unit which uses virtual addressing in address control words to access a high speed buffer store of limited storage capacity and simultaneously to access the high capacity main store of slower operating speed, whereby no time is lost in accessing the main store in the event the buffer store cannot be accessed.
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Compound and multilevel memories

TL;DR: In this paper, a matching between an effective address, identifying an addressed information block, and an associative array word directly energizes corresponding random access array locations which contain the information block.
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Translation storage scheme for virtual memory system

TL;DR: In this article, a virtual memory system consisting of a main storage and a smaller high speed buffer is described, where the TLAT is used to store the current virtual-to-real address translations in a Translation Look Aside Table (TLAT) and the buffer directory is maintained in a buffer directory.
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Integral hierarchical binary storage element

TL;DR: In this article, a binary data storage system of a data processing system is comprised of electrically independent storage modules, each module comprised of a matrix of independent storage devices, with each storage device being an integral circuit element comprised of binary storage cells and associated selection circuitry.