JPS57113161A - Extraction system for status change bit - Google Patents

Extraction system for status change bit

Info

Publication number
JPS57113161A
JPS57113161A JP55188272A JP18827280A JPS57113161A JP S57113161 A JPS57113161 A JP S57113161A JP 55188272 A JP55188272 A JP 55188272A JP 18827280 A JP18827280 A JP 18827280A JP S57113161 A JPS57113161 A JP S57113161A
Authority
JP
Japan
Prior art keywords
bit
bits
extraction system
status change
change bit
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP55188272A
Other languages
Japanese (ja)
Inventor
Koichi Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55188272A priority Critical patent/JPS57113161A/en
Publication of JPS57113161A publication Critical patent/JPS57113161A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G06F9/30018—Bit or string instructions

Abstract

PURPOSE:To speed up correspondence processing by rapidly extracting the position of a bit which has a change in state, by providing a correspondence table for state change bits. CONSTITUTION:The result value of exclusive OR operation 4 is used as an address value of a table 10 to refer to the table. For example, when the operation result is ''00000001'', contents showing[1st state change bit]are stored in the corresponding address of the table 10, so they are transferred to a bit-position storage part 6. Similarly, the following eight bits are processed at a time. When bits are read, eight by eight, referring to the indexes of the table is completed only once, shortening the processing time.
JP55188272A 1980-12-29 1980-12-29 Extraction system for status change bit Pending JPS57113161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55188272A JPS57113161A (en) 1980-12-29 1980-12-29 Extraction system for status change bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55188272A JPS57113161A (en) 1980-12-29 1980-12-29 Extraction system for status change bit

Publications (1)

Publication Number Publication Date
JPS57113161A true JPS57113161A (en) 1982-07-14

Family

ID=16220758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55188272A Pending JPS57113161A (en) 1980-12-29 1980-12-29 Extraction system for status change bit

Country Status (1)

Country Link
JP (1) JPS57113161A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644102A (en) * 1991-04-16 1994-02-18 Nec Corp Plural processors systems
JPH09106360A (en) * 1995-10-11 1997-04-22 Nec Corp Alarm notification device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644102A (en) * 1991-04-16 1994-02-18 Nec Corp Plural processors systems
JPH09106360A (en) * 1995-10-11 1997-04-22 Nec Corp Alarm notification device

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