Method and system for load data formatting and improved method f

Details Method and system for load data formatting and improved method f Method and system for load data formatting and improved method f

1997-07-18

2000-07-04

Gossage, Glenn

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711138, 711201, 712300, G06F 1200

Patent

active

060852895

ABSTRACT:
An improved load data formatter and methods for improving load data formatting and for cache line data organization are disclosed. The load data formatter includes a data selection mechanism, the data selection mechanism receiving a data cache line of a predetermined organization, and the data selection mechanism further supporting adjacent word swapping in the cache line. The load data formatter further includes at least two word selectors coupled to an output of the data selection mechanism, the at least two word selectors forming a doubleword on a chosen word boundary of the cache line. In a further aspect, the predetermined organization of the cache line is provided by grouping each corresponding bit of each byte in a cache line of data together, and expanding the grouping with an organization formed by one bit from a same byte within each word. The at least two word selectors may comprise even and odd multiplexers, and the load data formatter may also include splice registers, coupled to an output of one of the at least two selectors, which provide formatting of unaligned load access across a cache line boundary.

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