Electrical computers and digital processing systems: memory – Address formation – Address mapping
Reexamination Certificate
2005-11-08
2005-11-08
Padmanabhan, Mano (Department: 2189)
Electrical computers and digital processing systems: memory
Address formation
Address mapping
C711S150000, C711S168000, C711S169000
Reexamination Certificate
active
06963964
ABSTRACT:
In a computer processor, multiple partially translated real addresses for a pipelined operation are compared with the real addresses of one or more other operations in the pipeline to detect an address conflict, without waiting for the address translation mechanism to fully translate the real address. Preferably, if a match is found, it is assumed that an address conflict exists, and the pipeline is stalled one or more cycles to maintain data integrity in the event of an actual address conflict. Preferably, the CPU has caches which are addressed using real addresses, and an N-way translation lookaside buffer (TLB) for determining the high-order portion of a real address. Each of the N real address portions in the TLB is compared with other operations in the pipeline, before determining which is the correct real address portion.
REFERENCES:
patent: 5293595 (1994-03-01), Caldarale et al.
patent: 5854914 (1998-12-01), Bodas et al.
patent: 5987593 (1999-11-01), Senter et al.
patent: 6463514 (2002-10-01), Ray et al.
patent: 2003/0177326 (2003-09-01), Luick
Microsoft Computer Dictionary, 1999, Microsoft Press, Fourth Edition, p. 470.
International Business Machines - Corporation
Padmanabhan Mano
Rojas Midys
Truelson Roy W.
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