Electrical computers and digital processing systems: processing – Processing control – Arithmetic operation instruction processing
Reexamination Certificate
2008-03-18
2008-03-18
Kim, Kenneth S. (Department: 2111)
Electrical computers and digital processing systems: processing
Processing control
Arithmetic operation instruction processing
C708S230000, C708S524000
Reexamination Certificate
active
07346761
ABSTRACT:
An arithmetic and logic device as an integral part of a processing unit is provided to achieve code size and overhead reduction. The arithmetic and logic device contains several auxiliary computing units, each of which is capable of simple arithmetic and logical operation, under the control of a control unit. By configuring the auxiliary computing units along the data path, additional processing to the operands could be carried out within the same instruction cycle. As such, a processing unit incorporating such an arithmetic and logic device is able to achieve significant performance improvement both in terms of code size and memory access overhead.
REFERENCES:
patent: 5187795 (1993-02-01), Balmforth et al.
patent: 5777907 (1998-07-01), Kwon et al.
patent: 6523054 (2003-02-01), Kamijo
patent: 2005/0198472 (2005-09-01), Sih et al.
Chen Tien-Fu
Kang Chih-Heng
Win Chen-Neng
Kim Kenneth S.
National Chung Cheng University
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