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JPS5679357A - Control unit having hierarchical processor and memory - Google Patents

Control unit having hierarchical processor and memory

Info

Publication number
JPS5679357A
JPS5679357A JP15418279A JP15418279A JPS5679357A JP S5679357 A JPS5679357 A JP S5679357A JP 15418279 A JP15418279 A JP 15418279A JP 15418279 A JP15418279 A JP 15418279A JP S5679357 A JPS5679357 A JP S5679357A
Authority
JP
Japan
Prior art keywords
processor
memory
processing program
microprogram
control unit
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
JP15418279A
Other languages
Japanese (ja)
Inventor
Masakazu Kawamoto
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 JP15418279A priority Critical patent/JPS5679357A/en
Publication of JPS5679357A publication Critical patent/JPS5679357A/en
Pending legal-status Critical Current

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  • Multi Processors (AREA)

Abstract

PURPOSE: To make it possible to control the whole input/output system by the control unit, by constituting the processor of a microprogram, and the memory in which the microprogram is resident, of hierarchical structure by the speed and capacity of the element.
CONSTITUTION: A microprogram on the control memory 10a or 10b requests a processing program corresponding to the started input/output unit 18a or 18b to the low speed processor 24. In response to this request, the processor 24 transfers this processing program to the device 10a or 10b, which is the request source, from the main memory 26. During this time, the devices 10a, 10b are held in common by the processor 24, and the high speed processor 12a or 12b. When transfer of this processing program has been finished, the processor 12a or 12b continues the input/output processing by the processing program which has been transferred. In this way, when a fault has occurred in the processor 12a or 12b, the processor 24 is able to directly back it up, and on the contrary, the processor 12a or 12b can back up the processor 24.
COPYRIGHT: (C)1981,JPO&Japio
JP15418279A 1979-11-30 1979-11-30 Control unit having hierarchical processor and memory Pending JPS5679357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15418279A JPS5679357A (en) 1979-11-30 1979-11-30 Control unit having hierarchical processor and memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15418279A JPS5679357A (en) 1979-11-30 1979-11-30 Control unit having hierarchical processor and memory

Publications (1)

Publication Number Publication Date
JPS5679357A true JPS5679357A (en) 1981-06-29

Family

ID=15578621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15418279A Pending JPS5679357A (en) 1979-11-30 1979-11-30 Control unit having hierarchical processor and memory

Country Status (1)

Country Link
JP (1) JPS5679357A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208850A (en) * 1982-05-31 1983-12-05 Fujitsu Ltd Microprogram storage processing system
JPS60237521A (en) * 1984-05-09 1985-11-26 Fujitsu Ltd Control system for power recovery
JPS6159531A (en) * 1984-08-31 1986-03-27 Hitachi Ltd Microprogram loader

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208850A (en) * 1982-05-31 1983-12-05 Fujitsu Ltd Microprogram storage processing system
JPS60237521A (en) * 1984-05-09 1985-11-26 Fujitsu Ltd Control system for power recovery
JPS6159531A (en) * 1984-08-31 1986-03-27 Hitachi Ltd Microprogram loader

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