JPS57132248A - Instruction execution device - Google Patents

Instruction execution device

Info

Publication number
JPS57132248A
JPS57132248A JP1783381A JP1783381A JPS57132248A JP S57132248 A JPS57132248 A JP S57132248A JP 1783381 A JP1783381 A JP 1783381A JP 1783381 A JP1783381 A JP 1783381A JP S57132248 A JPS57132248 A JP S57132248A
Authority
JP
Japan
Prior art keywords
instructions
instruction
read out
control
skip
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
JP1783381A
Other languages
Japanese (ja)
Inventor
Tetsuo Kanai
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 JP1783381A priority Critical patent/JPS57132248A/en
Publication of JPS57132248A publication Critical patent/JPS57132248A/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
    • G06F9/3005—Arrangements for executing specific machine instructions to perform operations for flow control
    • G06F9/30069—Instruction skipping instructions, e.g. SKIP

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)

Abstract

PURPOSE:To speed up skip instruction execution by exercising control so that after instructions to be skipped are read out, a next instruction is read out immediately by eliminating the processing time required for the execution of the instructions. CONSTITUTION:An ROM1 stored with instructions, and a decoder 3, an encoder, a processing control part 7, etc., for the instructions are provided. For example, a skip instruction is read out of the ROM1 and fetched into an instruction register 2. The skip instruction is decoded by the decoder 3 and the result is inputted to a processing control part 7 through an encoder 4. Once the control part 7 generates a control signal C1 to set an inhibition part 5, the inhibition part 5 sends a signal C2 to control a gate 6. Then, a skip control part 9 is controlled to force a program counter 8 to go up by one. Thus, a next instruction is read out of the ROM1 without expending a processing cycle for instructions to be skipped.
JP1783381A 1981-02-09 1981-02-09 Instruction execution device Pending JPS57132248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1783381A JPS57132248A (en) 1981-02-09 1981-02-09 Instruction execution device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1783381A JPS57132248A (en) 1981-02-09 1981-02-09 Instruction execution device

Publications (1)

Publication Number Publication Date
JPS57132248A true JPS57132248A (en) 1982-08-16

Family

ID=11954692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1783381A Pending JPS57132248A (en) 1981-02-09 1981-02-09 Instruction execution device

Country Status (1)

Country Link
JP (1) JPS57132248A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282331A (en) * 1986-05-31 1987-12-08 Canon Inc Arithmetic processing unit
JPS6366638A (en) * 1986-09-08 1988-03-25 Mitsubishi Electric Corp Instruction skip circuit for microcomputer
US5061891A (en) * 1988-11-21 1991-10-29 Yazaki Corporation Cross coil
US5243277A (en) * 1988-11-21 1993-09-07 Yazaki Corporation Cross coil meter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282331A (en) * 1986-05-31 1987-12-08 Canon Inc Arithmetic processing unit
JPS6366638A (en) * 1986-09-08 1988-03-25 Mitsubishi Electric Corp Instruction skip circuit for microcomputer
US5061891A (en) * 1988-11-21 1991-10-29 Yazaki Corporation Cross coil
US5243277A (en) * 1988-11-21 1993-09-07 Yazaki Corporation Cross coil meter

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