JPS55135385A - Data processing system - Google Patents

Data processing system

Info

Publication number
JPS55135385A
JPS55135385A JP4072079A JP4072079A JPS55135385A JP S55135385 A JPS55135385 A JP S55135385A JP 4072079 A JP4072079 A JP 4072079A JP 4072079 A JP4072079 A JP 4072079A JP S55135385 A JPS55135385 A JP S55135385A
Authority
JP
Japan
Prior art keywords
memory
substitution
unit
dictionary
information
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
JP4072079A
Other languages
Japanese (ja)
Inventor
Masami Kushihashi
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 JP4072079A priority Critical patent/JPS55135385A/en
Publication of JPS55135385A publication Critical patent/JPS55135385A/en
Pending legal-status Critical Current

Links

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)
  • Debugging And Monitoring (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE: To simplify the constitution of a buffer memory substitution selecting circuit part by previously writing a substitution inhibition bit in a dictionary when a fault occurs in an area in a main memory unit.
CONSTITUTION: Pre-determined unit information in a main memory unit is transferred to buffer memory 2, access to memory 2 is attained in processing and when needed information does not reside in memory 2, the unit information is transferred from the main memory unit to memory 2. Then, address information corresponding to the unit information transferred to a data part in memory 2 is stored in dictionary part 3 in memory 2, a substitution inhibition bit corresponding to the unit information is also stored and in access to dictionary part 3, the read contents of dictionary part 3 are supplied to substitution selecting circuit 10. Circuit 10 performs substitution processing referring to the substitution inhibition bit in the read contents.
COPYRIGHT: (C)1980,JPO&Japio
JP4072079A 1979-04-04 1979-04-04 Data processing system Pending JPS55135385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4072079A JPS55135385A (en) 1979-04-04 1979-04-04 Data processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4072079A JPS55135385A (en) 1979-04-04 1979-04-04 Data processing system

Publications (1)

Publication Number Publication Date
JPS55135385A true JPS55135385A (en) 1980-10-22

Family

ID=12588426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4072079A Pending JPS55135385A (en) 1979-04-04 1979-04-04 Data processing system

Country Status (1)

Country Link
JP (1) JPS55135385A (en)

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