JPS56123040A - Branching system - Google Patents

Branching system

Info

Publication number
JPS56123040A
JPS56123040A JP2405380A JP2405380A JPS56123040A JP S56123040 A JPS56123040 A JP S56123040A JP 2405380 A JP2405380 A JP 2405380A JP 2405380 A JP2405380 A JP 2405380A JP S56123040 A JPS56123040 A JP S56123040A
Authority
JP
Japan
Prior art keywords
processing
branching
test
branch destination
latter half
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
JP2405380A
Other languages
Japanese (ja)
Inventor
Michitaka Yamamoto
Motonobu Nagafuji
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2405380A priority Critical patent/JPS56123040A/en
Publication of JPS56123040A publication Critical patent/JPS56123040A/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
    • G06F9/22—Microcontrol or microprogram arrangements
    • G06F9/26—Address formation of the next micro-instruction ; Microprogram storage or retrieval arrangements
    • G06F9/262—Arrangements for next microinstruction selection
    • G06F9/264—Microinstruction selection based on results of processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To improve the processing speed and reduce the number of steps of the program, by dividing the test execution cycle into the first half and the latter half and by executing the processing for branching to each branch destination in the first half and by executing a part of the processing after branching in the latter half. CONSTITUTION:The test execution cycle is divided into the first half and the latter half. In the first half, the processing (indicated by a specific field in micro steps) required for branching to each branch destination is executed. In the latter half, processing results, which concern a specific branch destination determined by the test result, out of processing results obtained in the first half are selected and are made effective. Consequently, these effective processing results are used to execute immediately the micro instruction in the branch destination in the next execution cycle. That is, a part of the processing after branching is executed in parallel with the test in the test cycle.
JP2405380A 1980-02-29 1980-02-29 Branching system Pending JPS56123040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2405380A JPS56123040A (en) 1980-02-29 1980-02-29 Branching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2405380A JPS56123040A (en) 1980-02-29 1980-02-29 Branching system

Publications (1)

Publication Number Publication Date
JPS56123040A true JPS56123040A (en) 1981-09-26

Family

ID=12127711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2405380A Pending JPS56123040A (en) 1980-02-29 1980-02-29 Branching system

Country Status (1)

Country Link
JP (1) JPS56123040A (en)

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