Method and apparatus for compressing cacheable data

Details Method and apparatus for compressing cacheable data Method and apparatus for compressing cacheable data

1991-08-02

1995-10-17

Elmore, Reba I.

Boots, shoes, and leggings

3642606, 3649397, 395250, 395445, G06F 1200

Patent

active

054598494

ABSTRACT:
A method and apparatus for compressing cacheable data stored in one or more write back buffers is described herein. A cacheable data element includes an address component, a data component and a byte enable component. Generally, the method includes comparing the address component of a first cacheable data element stored in a first write back buffer with the address component of a second cacheable data element. This second cacheable data element may be an incoming data element from the processor or a data element stored in a second write back buffer. If the two address components are equal, then compression is performed. In one implementation, compression is performed by overlaying the data component of the first cacheable data element with the data component of the second cacheable data element resulting in a compressed data component. In addition, the byte enable component of the first cacheable data element and the byte enable component of the second cacheable data element are combined resulting in a combined byte enable component. The combined byte enable component indicates which bits of the compressed data component are valid.

REFERENCES:
patent: 4136386 (1979-01-01), Annunziata et al.
patent: 4313158 (1982-01-01), Porter et al.
patent: 4677550 (1987-06-01), Ferguson
patent: 4742446 (1988-05-01), Morioka et al.
patent: 4811203 (1989-03-01), Hamstra
patent: 4823259 (1989-04-01), Aichelmann, Jr. et al.
patent: 4858111 (1989-08-01), Steps
patent: 5019965 (1991-05-01), Webb, Jr. et al.
patent: 5155843 (1992-10-01), Stamm et al.
patent: 5222223 (1993-06-01), Webb, Jr. et al.
patent: 5241638 (1993-08-01), Mork et al.
patent: 5327541 (1994-07-01), Reinecke et al.
IBM Technical Disclosure Bulletin, vol. 25, No. 9, Feb. 1983.

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