JPS57157356A - Instruction decorder error detector - Google Patents

Instruction decorder error detector

Info

Publication number
JPS57157356A
JPS57157356A JP56043419A JP4341981A JPS57157356A JP S57157356 A JPS57157356 A JP S57157356A JP 56043419 A JP56043419 A JP 56043419A JP 4341981 A JP4341981 A JP 4341981A JP S57157356 A JPS57157356 A JP S57157356A
Authority
JP
Japan
Prior art keywords
type
instruction
decorder
next instruction
operand
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
JP56043419A
Other languages
Japanese (ja)
Inventor
Katsumi Kubo
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 JP56043419A priority Critical patent/JPS57157356A/en
Publication of JPS57157356A publication Critical patent/JPS57157356A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Advance Control (AREA)
  • Executing Machine-Instructions (AREA)

Abstract

PURPOSE:To prevent the increase in frequency of error of each decorder itself, by enabling to check a failure of an instruction type decorder and an operand type decorder itself, through the provision of a specific type check circuit section. CONSTITUTION:The next instruction is pre-fetched to a register 2, and the instruction type and the operand type of the next instruction decorded with an instruction type decorder 3 and an operand type decorder 4 of a next instruction code interpreting section 1 are introduced to a page cross detector 5 to check if the page cross is caused at the next instruction. A data processor with this constitution is provided with a type check circuit section 6 relating to the next instruction constituted so that the state of combination not permitted mutually or permitted can be detected based on the said decorded instruction type signal and the operand type signal, e.g., having the content as shown in figure.
JP56043419A 1981-03-25 1981-03-25 Instruction decorder error detector Pending JPS57157356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56043419A JPS57157356A (en) 1981-03-25 1981-03-25 Instruction decorder error detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56043419A JPS57157356A (en) 1981-03-25 1981-03-25 Instruction decorder error detector

Publications (1)

Publication Number Publication Date
JPS57157356A true JPS57157356A (en) 1982-09-28

Family

ID=12663180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56043419A Pending JPS57157356A (en) 1981-03-25 1981-03-25 Instruction decorder error detector

Country Status (1)

Country Link
JP (1) JPS57157356A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334641A (en) * 1986-07-29 1988-02-15 Nec Corp Information processor
JPS6334642A (en) * 1986-07-29 1988-02-15 Nec Corp Information processor
JPS6334643A (en) * 1986-07-29 1988-02-15 Nec Corp Information processor
JPH0228722A (en) * 1988-07-18 1990-01-30 Mitsubishi Electric Corp Data processor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334641A (en) * 1986-07-29 1988-02-15 Nec Corp Information processor
JPS6334642A (en) * 1986-07-29 1988-02-15 Nec Corp Information processor
JPS6334643A (en) * 1986-07-29 1988-02-15 Nec Corp Information processor
JPH0228722A (en) * 1988-07-18 1990-01-30 Mitsubishi Electric Corp Data processor

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