JPS6029843A - Microprogram controller - Google Patents

Microprogram controller

Info

Publication number
JPS6029843A
JPS6029843A JP58138286A JP13828683A JPS6029843A JP S6029843 A JPS6029843 A JP S6029843A JP 58138286 A JP58138286 A JP 58138286A JP 13828683 A JP13828683 A JP 13828683A JP S6029843 A JPS6029843 A JP S6029843A
Authority
JP
Japan
Prior art keywords
control
error
time
control word
memory
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
JP58138286A
Other languages
Japanese (ja)
Other versions
JPH0529934B2 (en
Inventor
Shigemi Uemoto
Koichi Ueda
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 JP58138286A priority Critical patent/JPH0529934B2/ja
Publication of JPS6029843A publication Critical patent/JPS6029843A/en
Publication of JPH0529934B2 publication Critical patent/JPH0529934B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/22Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26Functional testing
    • G06F11/27Built-in tests

Abstract

PURPOSE:To reduce the probability of error occurrence to a control memory in a stage of actual instruction execution and to improve the reliability by reading a control word out of the control memory and making a diagnosis at specific intervals of time, and correcting an error if the error occurs and rewriting the control words. CONSTITUTION:A diagnostic instruction is generated at constant intervals of time to access the control memory 1, and when a flag 31 indicating the read control word is a specific control word is detected, a control circuit 7 is actuated for diagnosis. If an error is detected here, an error correcting code logical mechanism corrects this control word, sets the corrected data in a write register 4, and rewrites it in the control memory 1. This operation is repeated at constant intervals of time to read and check all control words eventually, and an error is corrected once occurring.
JP58138286A 1983-07-28 1983-07-28 Expired - Lifetime JPH0529934B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58138286A JPH0529934B2 (en) 1983-07-28 1983-07-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58138286A JPH0529934B2 (en) 1983-07-28 1983-07-28

Publications (2)

Publication Number Publication Date
JPS6029843A true JPS6029843A (en) 1985-02-15
JPH0529934B2 JPH0529934B2 (en) 1993-05-06

Family

ID=15218344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58138286A Expired - Lifetime JPH0529934B2 (en) 1983-07-28 1983-07-28

Country Status (1)

Country Link
JP (1) JPH0529934B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175041A (en) * 1987-12-28 1989-07-11 Toshiba Corp Single error detecting and correcting system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101199A (en) * 1979-01-22 1980-08-01 Hitachi Ltd Memory refresh unit
JPS55157038A (en) * 1979-05-23 1980-12-06 Fujitsu Ltd Microprogram control system
JPS57100694A (en) * 1980-12-12 1982-06-22 Toshiba Corp Storage device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101199A (en) * 1979-01-22 1980-08-01 Hitachi Ltd Memory refresh unit
JPS55157038A (en) * 1979-05-23 1980-12-06 Fujitsu Ltd Microprogram control system
JPS57100694A (en) * 1980-12-12 1982-06-22 Toshiba Corp Storage device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175041A (en) * 1987-12-28 1989-07-11 Toshiba Corp Single error detecting and correcting system

Also Published As

Publication number Publication date
JPH0529934B2 (en) 1993-05-06

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