Electrical computers and digital processing systems: processing – Processing control – Branching
Reexamination Certificate
2011-05-03
2011-05-03
Fennema, Robert (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Branching
Reexamination Certificate
active
07937574
ABSTRACT:
In an embodiment, a microcode unit for a processor is contemplated. The microcode unit comprises a microcode memory storing a plurality of microcode routines executable by the processor, wherein each microcode routine comprises two or more microcode operations. Coupled to the microcode memory, the sequence control unit is configured to control reading microcode operations from the microcode memory to be issued for execution by the processor. The sequence control unit is configured to stall issuance of microcode operations forming a body of a loop in a first routine of the plurality of microcode routines until a loop counter value that indicates a number of iterations of the loop is received by the sequence control unit.
REFERENCES:
patent: 5898865 (1999-04-01), Mahalingaiah
patent: 5898866 (1999-04-01), Atkins et al.
patent: 6003128 (1999-12-01), Tran
patent: 6014741 (2000-01-01), Mahalingaiah
patent: 6032252 (2000-02-01), Petro et al.
patent: 7366885 (2008-04-01), Radhakrishnan et al.
patent: 2004/0193858 (2004-09-01), Ahmad et al.
Patterson, David. Hennessy, John. “Computer Architecture: A Quantitative Approach”. Morgan Kaufmann Publishers, Inc. Second Edition, 1996. pp. 161-169.
Mayer, Herb. “Loop Instruction in x86”. Mar. 17, 2003. 5 pages.
Ahmed Syed Faisal
Clark Michael T.
DiBrino Michael T.
Ilic Jelena
Advanced Micro Devices , Inc.
Fennema Robert
Merkel Lawrence J.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
LandOfFree
Precise counter hardware for microcode loops does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Precise counter hardware for microcode loops, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precise counter hardware for microcode loops will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2668240