WO2003019381A3 - A software controlled content addressable memory in a general purpose execution datapath - Google Patents

A software controlled content addressable memory in a general purpose execution datapath Download PDF

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Publication number
WO2003019381A3
WO2003019381A3 PCT/US2002/027354 US0227354W WO03019381A3 WO 2003019381 A3 WO2003019381 A3 WO 2003019381A3 US 0227354 W US0227354 W US 0227354W WO 03019381 A3 WO03019381 A3 WO 03019381A3
Authority
WO
WIPO (PCT)
Prior art keywords
general purpose
addressable memory
content addressable
software controlled
controlled content
Prior art date
Application number
PCT/US2002/027354
Other languages
French (fr)
Other versions
WO2003019381A2 (en
Inventor
Mark Rosenbluth
Gilbert Wolrich
Debra Bernstein
Original Assignee
Intel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Corp filed Critical Intel Corp
Priority to EP02768734.2A priority Critical patent/EP1586037B1/en
Priority to KR10-2003-7017294A priority patent/KR20040010789A/en
Priority to AU2002331751A priority patent/AU2002331751A1/en
Priority to CA002456688A priority patent/CA2456688A1/en
Publication of WO2003019381A2 publication Critical patent/WO2003019381A2/en
Publication of WO2003019381A3 publication Critical patent/WO2003019381A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/30021—Compare instructions, e.g. Greater-Than, Equal-To, MINMAX
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0806—Multiuser, multiprocessor or multiprocessing cache systems
    • G06F12/0842—Multiuser, multiprocessor or multiprocessing cache systems for multiprocessing or multitasking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/3004—Arrangements for executing specific machine instructions to perform operations on memory
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/3004—Arrangements for executing specific machine instructions to perform operations on memory
    • G06F9/30043—LOAD or STORE instructions; Clear instruction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline, look ahead
    • G06F9/3824—Operand accessing
    • G06F9/383—Operand prefetching

Abstract

A lookup mechanism provides an input value to a datapath element disposed in an execution datapath of a processor and causes the datapath element to compare the input value to stored identifier values. The lookup mechanism receives from the datapath element a result based on the comparison.
PCT/US2002/027354 2001-08-27 2002-08-27 A software controlled content addressable memory in a general purpose execution datapath WO2003019381A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP02768734.2A EP1586037B1 (en) 2001-08-27 2002-08-27 A software controlled content addressable memory in a general purpose execution datapath
KR10-2003-7017294A KR20040010789A (en) 2001-08-27 2002-08-27 A software controlled content addressable memory in a general purpose execution datapath
AU2002331751A AU2002331751A1 (en) 2001-08-27 2002-08-27 A software controlled content addressable memory in a general purpose execution datapath
CA002456688A CA2456688A1 (en) 2001-08-27 2002-08-27 A software controlled content addressable memory in a general purpose execution datapath

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US31514401P 2001-08-27 2001-08-27
US60/315,144 2001-08-27
US10/212,943 US6868476B2 (en) 2001-08-27 2002-08-05 Software controlled content addressable memory in a general purpose execution datapath
US10/212,943 2002-08-05

Publications (2)

Publication Number Publication Date
WO2003019381A2 WO2003019381A2 (en) 2003-03-06
WO2003019381A3 true WO2003019381A3 (en) 2006-12-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/027354 WO2003019381A2 (en) 2001-08-27 2002-08-27 A software controlled content addressable memory in a general purpose execution datapath

Country Status (7)

Country Link
US (2) US6868476B2 (en)
EP (1) EP1586037B1 (en)
KR (1) KR20040010789A (en)
AU (1) AU2002331751A1 (en)
CA (1) CA2456688A1 (en)
TW (1) TWI228653B (en)
WO (1) WO2003019381A2 (en)

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