Methods and apparatus for executing extended custom...

Details Methods and apparatus for executing extended custom... Methods and apparatus for executing extended custom...

2011-08-23

2011-08-23

Kindred, Alford W (Department: 2181)

Electrical computers and digital processing systems: processing

Processing control

Processing control for data transfer

C712S034000

Reexamination Certificate

active

08006074

ABSTRACT:
Methods and apparatus are provided for efficiently executing extended custom instructions on a programmable chip. Components of a processor core such as arithmetic logic units, program sequencer units, and address generation units are integrated with customizable logic blocks. Various customizable logic blocks can be invoked in a pipelined manner using an available customized instruction set while allowing a processor to continue simultaneous operation. Program counter snooping is also provided to add custom instruction functionality to a processor with no additional provisions for adding custom instructions.

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Michelle Dolle, Manfred Schlett, “A Cost-Effective RISC/DSP Microprocessor for Embedded Systems”, Oct. 1995, Hyperstone Electronics, p. 35-36.
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Nios®, “Nios Custom Instructions, Tutorial” by Altera Corporation Doc. Version 1, Jun. 2002, 38 pages.

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