JPS5480050A - Data processor - Google Patents

Data processor

Info

Publication number
JPS5480050A
JPS5480050A JP14706477A JP14706477A JPS5480050A JP S5480050 A JPS5480050 A JP S5480050A JP 14706477 A JP14706477 A JP 14706477A JP 14706477 A JP14706477 A JP 14706477A JP S5480050 A JPS5480050 A JP S5480050A
Authority
JP
Japan
Prior art keywords
fault
register
memory means
written
data
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
JP14706477A
Other languages
Japanese (ja)
Inventor
Akira Kasai
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14706477A priority Critical patent/JPS5480050A/en
Publication of JPS5480050A publication Critical patent/JPS5480050A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To secure an automatic detection for the fault of the memory means as well as to enable the fault detection not only for a single bit but for the plural bits, by deciding whether a coincidence is obtained between the contents written into the comparing register and that written into the memory means via the comparison means.
CONSTITUTION: The following units are provided: at least one unit of memory means instruction register 3 to memorize the data; data comparing register 5 to which the same data is written simultaneously with the data writing into memory means 3; and comparator 9 which compares the contents written into register 5 with the contents written into means 3. Whether a coincidence is secured between the contents of register 5 and that of means 3 is decided by comparator 9. As a result, the fault of the memory means can be detected automatically, and furthermore not only a single-bit fault but the fault of plural bits can be detected.
COPYRIGHT: (C)1979,JPO&Japio
JP14706477A 1977-12-09 1977-12-09 Data processor Pending JPS5480050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14706477A JPS5480050A (en) 1977-12-09 1977-12-09 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14706477A JPS5480050A (en) 1977-12-09 1977-12-09 Data processor

Publications (1)

Publication Number Publication Date
JPS5480050A true JPS5480050A (en) 1979-06-26

Family

ID=15421662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14706477A Pending JPS5480050A (en) 1977-12-09 1977-12-09 Data processor

Country Status (1)

Country Link
JP (1) JPS5480050A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204645A (en) * 1981-06-10 1982-12-15 Nec Corp Receiver for individual selective call
JPS58118096A (en) * 1981-12-29 1983-07-13 Fujitsu Ltd Memory checking circuit
JPS63230370A (en) * 1987-03-19 1988-09-26 Fujitsu Ltd Printer device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204645A (en) * 1981-06-10 1982-12-15 Nec Corp Receiver for individual selective call
JPS6324574B2 (en) * 1981-06-10 1988-05-21 Nippon Electric Co
JPS58118096A (en) * 1981-12-29 1983-07-13 Fujitsu Ltd Memory checking circuit
JPS6230661B2 (en) * 1981-12-29 1987-07-03 Fujitsu Ltd
JPS63230370A (en) * 1987-03-19 1988-09-26 Fujitsu Ltd Printer device
JPH0552794B2 (en) * 1987-03-19 1993-08-06 Fujitsu Ltd

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