Apparatus and method for port arbitration in a register file...

Details Apparatus and method for port arbitration in a register file... Apparatus and method for port arbitration in a register file...

2003-10-06

2008-01-01

Chan, Eddie (Department: 2183)

Electrical computers and digital processing systems: processing

Instruction issuing

Reexamination Certificate

active

07315935

ABSTRACT:
A microprocessor is configured to provide port arbitration in a register file. The microprocessor includes a plurality of functional units configured to collectively operate on a maximum number of operands in a given execution cycle, and a register file providing a number of read ports that is insufficient to provide the maximum number of operands to the plurality of functional units in the given execution cycle. The microprocessor also includes an arbitration logic coupled to allocate the read ports of the register file for use by selected functional units during the given execution cycle.

REFERENCES:
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patent: 6076154 (2000-06-01), Van Eijndhoven et al.
patent: 6175912 (2001-01-01), Alidina et al.
patent: 2004/0064679 (2004-04-01), Black et al.

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