Alu with carry length detection

Details Alu with carry length detection Alu with carry length detection

G - Physics

06

F

354/231

G06F 1/04 (2006.01) G06F 7/50 (2006.01)

Patent

CA 1216951

ABSTRACT An ALU, performing selected operations on input oper- ands in a predetermined clock cycle, uses means for detecting a carry propagation path greater than a predetermined number of consecutive bit positions to cause a stretching of the clock cycle. Since such a long carry propagation path is detected for only a very small percentage of all operations, the cycle is normally shorter than otherwise possible, and, thus, the per- formance of a system using such an improved ALU is increased.

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