JPS6410361A - Information processor - Google Patents

Information processor

Info

Publication number
JPS6410361A
JPS6410361A JP62165336A JP16533687A JPS6410361A JP S6410361 A JPS6410361 A JP S6410361A JP 62165336 A JP62165336 A JP 62165336A JP 16533687 A JP16533687 A JP 16533687A JP S6410361 A JPS6410361 A JP S6410361A
Authority
JP
Japan
Prior art keywords
error
alternate
address
protection key
register
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
JP62165336A
Other languages
Japanese (ja)
Inventor
Takafumi Yamada
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 JP62165336A priority Critical patent/JPS6410361A/en
Publication of JPS6410361A publication Critical patent/JPS6410361A/en
Pending legal-status Critical Current

Links

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  • Storage Device Security (AREA)

Abstract

PURPOSE:To attain the recovery of a fault of plural bits without increasing the capacity of storage protection key by using a part of a hardware system area as a copy area for the storage protection key. CONSTITUTION:When an error of a storage protection key (KS) takes place during the write/readout of a main storage (MS) 3, an instruction processor (IP) 1 obtains an address of the KS with the error taken place therein to decide whether the error is an intermittent error or a permanent error. When the error is an intermittent error, a correct KS is read from a KS copy area (KSCA) 18 provided on a hardware system area (HSA) and the content is written in the KS and executes the processing again. In case of a permanent error, the correct KS is read from the KSCA 18 and the content is stored in a KS alternate register and the address of the KS with the error generated therein is stored in the alternate KS address register and the alternate KS mode register is brought into '1' to execute the processing again.
JP62165336A 1987-07-03 1987-07-03 Information processor Pending JPS6410361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62165336A JPS6410361A (en) 1987-07-03 1987-07-03 Information processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62165336A JPS6410361A (en) 1987-07-03 1987-07-03 Information processor

Publications (1)

Publication Number Publication Date
JPS6410361A true JPS6410361A (en) 1989-01-13

Family

ID=15810398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62165336A Pending JPS6410361A (en) 1987-07-03 1987-07-03 Information processor

Country Status (1)

Country Link
JP (1) JPS6410361A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000228059A (en) * 1999-02-05 2000-08-15 Toshiba Corp Receiving device and receiving method
JP2011176418A (en) * 2010-02-23 2011-09-08 Hitachi Consumer Electronics Co Ltd Content processing apparatus, and moving method of the content

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000228059A (en) * 1999-02-05 2000-08-15 Toshiba Corp Receiving device and receiving method
JP2011176418A (en) * 2010-02-23 2011-09-08 Hitachi Consumer Electronics Co Ltd Content processing apparatus, and moving method of the content

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