Apparatus and method for speculative prefetching after data...

Details Apparatus and method for speculative prefetching after data... Apparatus and method for speculative prefetching after data...

2005-09-13

2005-09-13

McLean-Mayo, Kimberly (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C712S207000

Reexamination Certificate

active

06944718

ABSTRACT:
A microprocessor is configured to continue execution in a special Speculative Prefetching After Data Cache Miss (SPAM) mode after a data cache miss is encountered. The microprocessor includes additional registers and program counter, and optionally additional cache memory for use during the special SPAM mode. By continuing execution during the SPAM mode, multiple outstanding and overlapping cache fill requests may be issued, thus improving performance of the microprocessor.

REFERENCES:
patent: 6085291 (2000-07-01), Hicks et al.
patent: 6317810 (2001-11-01), Lopez-Aguado et al.
patent: 6317820 (2001-11-01), Shiell et al.
patent: 6381678 (2002-04-01), Fu et al.
Handy, Jim; The Cache Memory Book, Second Edition, 1998.
Jegou, et al., Speculative Prefetching, 1993, pp. 59-62.

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