JPS5771054A - Microprogram controller - Google Patents

Microprogram controller

Info

Publication number
JPS5771054A
JPS5771054A JP55148820A JP14882080A JPS5771054A JP S5771054 A JPS5771054 A JP S5771054A JP 55148820 A JP55148820 A JP 55148820A JP 14882080 A JP14882080 A JP 14882080A JP S5771054 A JPS5771054 A JP S5771054A
Authority
JP
Japan
Prior art keywords
circuit
control
register
word
storage
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
JP55148820A
Other languages
Japanese (ja)
Inventor
Yoshinori Chiwaki
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 JP55148820A priority Critical patent/JPS5771054A/en
Publication of JPS5771054A publication Critical patent/JPS5771054A/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
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26—Functional testing
    • G06F11/273—Tester hardware, i.e. output processing circuits

Abstract

PURPOSE:To improve operation efficiency by selecting diagnostic data from an arithmetic circuit when a control storage word read in a control-storage-word readout register is in diagnostic mode. CONSTITUTION:A control storage word is read out of a control-storage-word readout register 2, and an arithmetic circuit 9 which inputs the contents of the parameter part of the register 2 and receives part of the contents of th control part of the register 2 as a control input is provided. Then, a constant register 13 stores the one-step preceding output of the circuit and it is inputted to the circuit 9. Further, a selecting circuit is provided which receives the output of the circuit 9 as one input and is controlled according to the state of a specific bit. When the output control storage word of the register 2 is in diagnostic mode, diagnostic data is selected from the circuit 9 to reduce a diagnostic microprogram.
JP55148820A 1980-10-22 1980-10-22 Microprogram controller Pending JPS5771054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55148820A JPS5771054A (en) 1980-10-22 1980-10-22 Microprogram controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55148820A JPS5771054A (en) 1980-10-22 1980-10-22 Microprogram controller

Publications (1)

Publication Number Publication Date
JPS5771054A true JPS5771054A (en) 1982-05-01

Family

ID=15461444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55148820A Pending JPS5771054A (en) 1980-10-22 1980-10-22 Microprogram controller

Country Status (1)

Country Link
JP (1) JPS5771054A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649126U (en) * 1993-11-19 1994-07-05 井関農機株式会社 Tractor cabin door
JPH0649125U (en) * 1993-11-19 1994-07-05 井関農機株式会社 Tractor cabin door

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649126U (en) * 1993-11-19 1994-07-05 井関農機株式会社 Tractor cabin door
JPH0649125U (en) * 1993-11-19 1994-07-05 井関農機株式会社 Tractor cabin door

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