JPS57209541A - Data processor having instruction rom - Google Patents

Data processor having instruction rom

Info

Publication number
JPS57209541A
JPS57209541A JP9491281A JP9491281A JPS57209541A JP S57209541 A JPS57209541 A JP S57209541A JP 9491281 A JP9491281 A JP 9491281A JP 9491281 A JP9491281 A JP 9491281A JP S57209541 A JPS57209541 A JP S57209541A
Authority
JP
Japan
Prior art keywords
address
correction
instruction rom
gate
address register
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
JP9491281A
Other languages
Japanese (ja)
Inventor
Sadao Nakao
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 JP9491281A priority Critical patent/JPS57209541A/en
Publication of JPS57209541A publication Critical patent/JPS57209541A/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
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1405—Saving, restoring, recovering or retrying at machine instruction level

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To add a plurality of instructions to correct a signal instruction on an instruction ROM, by providing a correction processing block to correct the contents of the instruction ROM. CONSTITUTION:Address information corresponding to an address area of an ROM1 read out from a memory 6 and the content of the address register 2 are compared at a comparison circuit 7. When they are coincident, gate circuits 11, 12, 14 and 15 are set and a gate circuit 13 is reset. When control information is provided, the readout of instructions after a plurality of times of correction is instructed. In this case, a branch address B is set to an address register 9 at correction via the gate 15. Accessing is made to a memory 8 with the contents of the address register 9 at correction.
JP9491281A 1981-06-19 1981-06-19 Data processor having instruction rom Pending JPS57209541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9491281A JPS57209541A (en) 1981-06-19 1981-06-19 Data processor having instruction rom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9491281A JPS57209541A (en) 1981-06-19 1981-06-19 Data processor having instruction rom

Publications (1)

Publication Number Publication Date
JPS57209541A true JPS57209541A (en) 1982-12-22

Family

ID=14123215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9491281A Pending JPS57209541A (en) 1981-06-19 1981-06-19 Data processor having instruction rom

Country Status (1)

Country Link
JP (1) JPS57209541A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05143317A (en) * 1991-11-18 1993-06-11 Matsushita Electric Ind Co Ltd Microcomputer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05143317A (en) * 1991-11-18 1993-06-11 Matsushita Electric Ind Co Ltd Microcomputer

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