Method for enhancing the visibility of effective address...

Electrical computers and digital processing systems: processing – Processing control – Generating next microinstruction address

Reexamination Certificate

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Details

C712S233000, C703S023000, C711S140000, C717S134000, C717S135000

Reexamination Certificate

active

10022972

ABSTRACT:
The invention relates to a method to increase the visibility of effective address computation in pipelined architectures. In this method, the current effective address delay of each instruction in the pipeline is calculated. The current effective address delay is used to determine if a valid effective address is available for each instruction. If a valid effective address for an instruction is not available, it is computed if possible.

REFERENCES:
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patent: 5949993 (1999-09-01), Fritz
patent: 6081885 (2000-06-01), Deao et al.
patent: 6308263 (2001-10-01), Hayakawa et al.
patent: 6658578 (2003-12-01), Laurenti et al.
“Cycle and Phase Accurate DSP Modeling and Integration for HW/SW Co-Verification”, 1999 ACM, by Lisa Guerra, et al.
“A Scalable Formal Verification Methodology for Pipelined Micorprocessors”, 1996 ACM, by Jeremy Levitt and Kunle Olukotun.
R. Bryant, M. Velev:Verification of Pipelined Microprocessors by Comparing Memory Execution Sequences in Symbolic Simulation, Proc. Of Asian Computer Science Conf., Dec. 1997, pp. 18-31.

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