Static frame digital memory

Details Static frame digital memory Static frame digital memory

1987-07-16

1989-06-13

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 1200

Patent

active

048397962

ABSTRACT:
A digital memory system wherein a plurality of frames in the memory, each frame holding a page of data, may be rapidly accessed utilizing static column dynamic random access memories (SCRAMs). The SCRAM devices are configured such that a page of data is located on corresponding rows of a plurality of SCRAM devices, the corresponding rows being referred to as frames. Once a row has been activated into static column mode, successive accesses to the same row may be made very rapidly. In the presently preferred embodiments, a plurality of banks are provided, each bank being capable of holding one page of data in static column mode. In the preferred embodiments, a tag register and comparator are provided which are associated with each bank. The tag register contains a portion of the address which previously caused an access to its corresponding bank. An address is presented to all the tag registers and comparators. If a match occurs, a memory access to the bank corresponding to the matching tag register may be made while the row in the selected bank is still in static column mode.

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