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This paper introduces a new family of Error-Correction Unordered (ECU) codes for global communication, called zero - sum. It is the combination of delay insensitive codes and fault tolerance of error correcting codes. Two important feature of this code are that they are systematic and weighted. For this code, a wide variety of weight assignments is used. Two enhancements are also proposed for zero-sum code. The zero-sum+ code, it gives error detection for 3-bit errors, or alternatively provides 2-bit detection and 1-bit correction. The zero-sum code, provides heuristic 2-bit correction while still guaranteeing 2-bit detection, under different weight assignments. The outline for this block level system micro architecture is given.
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