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JPS5687280A - Data processor - Google Patents

Data processor

Info

Publication number
JPS5687280A
JPS5687280A JP16155979A JP16155979A JPS5687280A JP S5687280 A JPS5687280 A JP S5687280A JP 16155979 A JP16155979 A JP 16155979A JP 16155979 A JP16155979 A JP 16155979A JP S5687280 A JPS5687280 A JP S5687280A
Authority
JP
Japan
Prior art keywords
error
column
case
address
access
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
JP16155979A
Other languages
Japanese (ja)
Inventor
Takeshi Watanabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP16155979A priority Critical patent/JPS5687280A/en
Publication of JPS5687280A publication Critical patent/JPS5687280A/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 reduce an effect to be given to the system in case an error occurs to a buffer storage (BS), by cutting off a column having the error not a row having the error.
CONSTITUTION: The F.F12 shows the function reduction mode in case an error to the BS5. In addition, the F.F13 is provided to show that the error is caused in the upper half column of the BS5 along with the selector 14 which addresses the address array (A.A) of the half opposite to that which has the error. An access is given to the A.A2 at the lower part 19 of the address, and the contents read out of the A.A2 is compared 3 with the upper part 17 of the address to obtain the buffer address. In this case, the extension part 16 is provided to the A.A2 to store a part of the lower rank addresses. Thus in case an error occurs, other value is used in place of a part of the part 19 to give an access to the A.A2. Thus the column opposite to the column having an error is always selected.
COPYRIGHT: (C)1981,JPO&Japio
JP16155979A 1979-12-14 1979-12-14 Data processor Pending JPS5687280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16155979A JPS5687280A (en) 1979-12-14 1979-12-14 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16155979A JPS5687280A (en) 1979-12-14 1979-12-14 Data processor

Publications (1)

Publication Number Publication Date
JPS5687280A true JPS5687280A (en) 1981-07-15

Family

ID=15737402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16155979A Pending JPS5687280A (en) 1979-12-14 1979-12-14 Data processor

Country Status (1)

Country Link
JP (1) JPS5687280A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179982A (en) * 1982-03-31 1983-10-21 ハネウエル・インフォメーション・システムズ・インコーポレーテッド Multi-level cash system
JPS5994283A (en) * 1982-11-20 1984-05-30 Nec Corp Buffer memory controller
JPS60205750A (en) * 1984-03-30 1985-10-17 Nec Corp Microprogram controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179982A (en) * 1982-03-31 1983-10-21 ハネウエル・インフォメーション・システムズ・インコーポレーテッド Multi-level cash system
JPS5994283A (en) * 1982-11-20 1984-05-30 Nec Corp Buffer memory controller
JPH036537B2 (en) * 1982-11-20 1991-01-30 Nippon Electric Co
JPS60205750A (en) * 1984-03-30 1985-10-17 Nec Corp Microprogram controller

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