SUPERSCALAR PROCESSOR

PROBLEM TO BE SOLVED: To reduce a circuit scale of a superscalar processor reservation station. SOLUTION: A register number, an index number and a data select flag are stored as operand data to be stored in an entry of a reservation station 5. For acquiring actual operand data, the data select flag indicating an operand data storage place is referred and data content is acquired from a reorder buffer 4 or a register file 3, when an instruction is sent out from the reservation station 5 to an instruction execution part 6. Thereby, the operand data can be stored in a smaller area than the operand data value is stored directly in the reservation station, and the circuit scale can be reduced. COPYRIGHT: (C)2004,JPO