Byte write error code method and apparatus

Details Byte write error code method and apparatus Byte write error code method and apparatus

1987-05-15

1989-03-28

Smith, Jerry

Excavating

371 13, G06F 1110

Patent

active

048170950

ABSTRACT:
A method and apparatus for error detection is disclosed. A data word and its check bits are read from memory, and new check bits are generated form the data word read. A logical operation is performed between the new check bits and the check bits read from memory to generate a syndrome. The syndrome is decoded to detect the presence or absence of an uncorrectable error. If an uncorrectable error is detected, a logical operation is performed between the new check bits and a byte write error code to generate a third set of check bits, which are then written into memory along with the data word.

REFERENCES:
patent: 4319357 (1982-03-01), Bossen
patent: 4458349 (1984-07-01), Aichelmann
patent: 4523314 (1985-06-01), Burns
patent: 4641310 (1987-02-01), Martens

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