JPS56147244A - Microprogram-controlled information processing device - Google Patents

Microprogram-controlled information processing device

Info

Publication number
JPS56147244A
JPS56147244A JP5015280A JP5015280A JPS56147244A JP S56147244 A JPS56147244 A JP S56147244A JP 5015280 A JP5015280 A JP 5015280A JP 5015280 A JP5015280 A JP 5015280A JP S56147244 A JPS56147244 A JP S56147244A
Authority
JP
Japan
Prior art keywords
signal
micro
branch
bit
ineffective
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
JP5015280A
Other languages
Japanese (ja)
Inventor
Kazuo Yoshimune
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5015280A priority Critical patent/JPS56147244A/en
Publication of JPS56147244A publication Critical patent/JPS56147244A/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 make flexible microprogramming possible, by causing branch designation for condition decision to make a part of the execution operation ineffective, in the information processing device using horizontal micro instructions. CONSTITUTION:The micro instruction read from control memory 10 is set into micro instruction register 20, and test object signal 901 from data processing part 90 and address least significant bit 205 from register 20 are selected by branch condition designating signal 203. If bit 205 is selected, unconditional branch is executed; and if signal 901 is selected, conditional branch is executed, and the next micro instruction is read in parallel with the execution of the micro instruction. When conditional branch is designated, bit signal 205 is compared with selected signal 301; and if they coincide with each other, the operation designated by micro command 201 is made ineffective if signal 202 corresponding to the micro command ineffective bit is output.
JP5015280A 1980-04-15 1980-04-15 Microprogram-controlled information processing device Pending JPS56147244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5015280A JPS56147244A (en) 1980-04-15 1980-04-15 Microprogram-controlled information processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5015280A JPS56147244A (en) 1980-04-15 1980-04-15 Microprogram-controlled information processing device

Publications (1)

Publication Number Publication Date
JPS56147244A true JPS56147244A (en) 1981-11-16

Family

ID=12851203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5015280A Pending JPS56147244A (en) 1980-04-15 1980-04-15 Microprogram-controlled information processing device

Country Status (1)

Country Link
JP (1) JPS56147244A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642858A (en) * 1979-09-17 1981-04-21 Nec Corp Microprogram control system
JPS5665247A (en) * 1979-11-02 1981-06-02 Hitachi Ltd Microprogram control unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642858A (en) * 1979-09-17 1981-04-21 Nec Corp Microprogram control system
JPS5665247A (en) * 1979-11-02 1981-06-02 Hitachi Ltd Microprogram control unit

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