Code determination using half-adder based operand comparator

Details Code determination using half-adder based operand comparator Code determination using half-adder based operand comparator

G - Physics

06

F

354/230.81

G06F 9/40 (2006.01) G06F 7/48 (2006.01) G06F 9/30 (2006.01) G06F 9/32 (2006.01) G06F 9/38 (2006.01)

Patent

CA 1211849

Abstract of the Disclosure Disclosed is a method and apparatus for predicting the condition code of a condition-code-setting instruction by comparing operands in a data processing system. An operand comparator includes one or more half-adders to predict carry outs at an early time. The comparator is used in a data processing system which is operative in response to instructions having operation codes for specifying op- erations to be executed. The instructions also have operand fields for identifying operands to be utilized in connection with executing the instructions.

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