External auxiliary execution unit interface for format conversion of instruction from issue unit to off-chip auxiliary execution unit

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United States of America Patent

PATENT NO 9075623
APP PUB NO 20130185542A1
SERIAL NO

13352907

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Abstract

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An external Auxiliary Execution Unit (AXU) interface is provided between a processing core disposed in a first programmable chip and an off-chip AXU disposed in a second programmable chip to integrate the AXU with an issue unit, a fixed point execution unit, and optionally other functional units in the processing core. The external AXU interface enables the issue unit to issue instructions to the AXU in much the same manner as the issue unit would be able to issue instructions to an AXU that was disposed on the same chip. By doing so, the AXU on the second programmable chip can be designed, tested and verified independent of the processing core on the first programmable chip, thereby enabling a common processing core, which has been designed, tested, and verified, to be used in connection with multiple different AXU designs.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mejdrich, Eric O Preston, US 75 3389
Schardt, Paul E Rochester, US 145 3600
Shearer, Robert A Rochester, US 163 4483
Swenson, Corey V Rochester, US 4 109

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