JPS56164445A - Information processing device of microprogram control type - Google Patents

Information processing device of microprogram control type

Info

Publication number
JPS56164445A
JPS56164445A JP6663280A JP6663280A JPS56164445A JP S56164445 A JPS56164445 A JP S56164445A JP 6663280 A JP6663280 A JP 6663280A JP 6663280 A JP6663280 A JP 6663280A JP S56164445 A JPS56164445 A JP S56164445A
Authority
JP
Japan
Prior art keywords
established
branch instruction
branch
conditional
signal
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
JP6663280A
Other languages
Japanese (ja)
Inventor
Hisanobu Mori
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 JP6663280A priority Critical patent/JPS56164445A/en
Publication of JPS56164445A publication Critical patent/JPS56164445A/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 execute complementary instructions to one conditional branch simply, by providing a means which inverts a conditional signal in a conditional branch instruction. CONSTITUTION:In a decoder 20 which interpretes a field other than branch instruction fields of a micro-instruction word register 2, a suitable combination of bits not used conventionally is selected, and it is used as the microinstruction to designate the inversion of the branch instruction. When an instrution to designate the inversion of the branch instruction is inputted, since one input of an exclusive logical sum circuit 21 is made to ''1'', the branch condition signal fed to another input is inverted for the logical level to be appeared at the output. As a result, the signal which has been hitherto branched to X when the condition has been established and to Y when not established, is branched to Y when established and to X when not established.
JP6663280A 1980-05-20 1980-05-20 Information processing device of microprogram control type Pending JPS56164445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6663280A JPS56164445A (en) 1980-05-20 1980-05-20 Information processing device of microprogram control type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6663280A JPS56164445A (en) 1980-05-20 1980-05-20 Information processing device of microprogram control type

Publications (1)

Publication Number Publication Date
JPS56164445A true JPS56164445A (en) 1981-12-17

Family

ID=13321452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6663280A Pending JPS56164445A (en) 1980-05-20 1980-05-20 Information processing device of microprogram control type

Country Status (1)

Country Link
JP (1) JPS56164445A (en)

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