Register error correction of speculative data in an...

Details Register error correction of speculative data in an... Register error correction of speculative data in an...

2007-09-04

2011-12-13

Torres, Joseph D (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S764000

Reexamination Certificate

active

08078942

ABSTRACT:
In one embodiment, a processor comprises a first register file configured to store speculative register state, a second register file configured to store committed register state, a check circuit and a control unit. The first register file is protected by a first error protection scheme and the second register file is protected by a second error protection scheme. A check circuit is coupled to receive a value and corresponding one or more check bits read from the first register file to be committed to the second register file in response to the processor selecting a first instruction to be committed. The check circuit is configured to detect an error in the value responsive to the value and the check bits. Coupled to the check circuit, the control unit is configured to cause reexecution of the first instruction responsive to the error detected by the check circuit.

REFERENCES:
patent: 4995041 (1991-02-01), Hetherington et al.
patent: 5233616 (1993-08-01), Callander
patent: 6363471 (2002-03-01), Meier et al.
patent: 6453427 (2002-09-01), Quach et al.
patent: 6584595 (2003-06-01), Cypher
patent: 6615366 (2003-09-01), Grochowski et al.
patent: 6625749 (2003-09-01), Quach
patent: 6625756 (2003-09-01), Grochowski et al.
patent: 6996766 (2006-02-01), Cypher
patent: 7058877 (2006-06-01), Tremblay et al.
patent: 7188296 (2007-03-01), Cypher
patent: 7543007 (2009-06-01), Iacobovici
patent: 7555692 (2009-06-01), Iacobovici
patent: 7769795 (2010-08-01), Iacobovici
patent: 2006/0156177 (2006-07-01), Kottapalli et al.
patent: 2008/0229145 (2008-09-01), Bose et al.

Affiliated with

Also associated with

Rating

Register error correction of speculative data in an... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Register error correction of speculative data in an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Register error correction of speculative data in an... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4258668