Merging data using a merge code from a look-up table and perform

Details Merging data using a merge code from a look-up table and perform Merging data using a merge code from a look-up table and perform

1995-03-03

1997-11-11

Chan, Eddie P.

39549702, 39518204, G06F 1204, G06F 1216

Patent

active

056873530

ABSTRACT:
A system and method providing ECC protection for all data block sizes for which a computer system supports store (ST) accesses includes an access control logic unit which converts store accesses for small data block (.ltoreq.64-bits) into read-modify (merge)-write accesses and a data merge logic unit which merges 64-bit data blocks retrieved by the load access with the small data block of the store access to create a new 64-bit data block. The data merge logic unit utilizes a merge code provided from a look-up table in a programmable logic array to perform the merging of the data blocks. An ECC generation logic unit processes the merged 64-bit data block, including the new small data block.

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Anupama Hegde, "Error Detection and Correction with the IDT49C466", Microprocessors and Microsystems, vol. 18, No. 10, Dec. 1994, pp. 613-620.

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