Data processing device and electronic equipment using...

Details Data processing device and electronic equipment using... Data processing device and electronic equipment using...

2003-06-20

2009-11-17

Patel, Niketa I (Department: 2181)

Electrical computers and digital processing systems: processing

Processing control

Branching

C712S214000, C712S200000, C712S205000

Reexamination Certificate

active

07620803

ABSTRACT:
A data processing device is provided using pipeline architecture to reduce a time loss due to a branch without causing an increase in circuit scale. The data processing device uses pipeline control. The data processing device includes an instruction queue in which a plurality of instruction codes can be fetched, a fetch address operation circuit which calculates a fetch address, a fetch circuit which fetches an instruction code based on the fetch address, and a branch information setting circuit which decodes a branch setting instruction, stores a branch address in a branch address storage register, and stores a branch target address in a branch target address storage register. The fetch address operation circuit compares either a previous fetch address or an expected next fetch address with a value stored in the branch address storage register, and determines a next fetch address to be output, based on the comparison result.

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patent: 05-313890 (1993-11-01), None

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