JPS5538674A - Logout system of memory controller - Google Patents

Logout system of memory controller

Info

Publication number
JPS5538674A
JPS5538674A JP11170778A JP11170778A JPS5538674A JP S5538674 A JPS5538674 A JP S5538674A JP 11170778 A JP11170778 A JP 11170778A JP 11170778 A JP11170778 A JP 11170778A JP S5538674 A JPS5538674 A JP S5538674A
Authority
JP
Japan
Prior art keywords
fault
acception
memory controller
circuit
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
JP11170778A
Other languages
Japanese (ja)
Inventor
Toshihiro Okabe
Tsutomu Sumimoto
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 JP11170778A priority Critical patent/JPS5538674A/en
Publication of JPS5538674A publication Critical patent/JPS5538674A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable a memory controller in a system operation state to collect data when a temporarily fault occurs by controlling the freeze release of the access acception of the memory controller, the logout of the internal state at fault time and storage to an external memory through a fault processor.
CONSTITUTION: When fault generating circuit 21 of memory controller 1 detects a fault such as address and parity errors, FF22 is set to close AND gates 16 and 17 through OR circuit 20, thereby freezing the access acception of address acception circuit 18 while the set output of fault detection FF22 is supplied to the fault processor. Consequently, the fault processor reads out the states of acception detection FF19 of circuit 1 and a register and stores them in an external memory. Then, the fault processor resets FF22 to release the acception freeze of access of circuit 1. Those operations are carried out automatically and when a temporarily fault occurs, status data at the time of the fault of the memory controller can be collected while the operation of a system including CPU is carried on.
COPYRIGHT: (C)1980,JPO&Japio
JP11170778A 1978-09-13 1978-09-13 Logout system of memory controller Pending JPS5538674A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11170778A JPS5538674A (en) 1978-09-13 1978-09-13 Logout system of memory controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11170778A JPS5538674A (en) 1978-09-13 1978-09-13 Logout system of memory controller

Publications (1)

Publication Number Publication Date
JPS5538674A true JPS5538674A (en) 1980-03-18

Family

ID=14568106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11170778A Pending JPS5538674A (en) 1978-09-13 1978-09-13 Logout system of memory controller

Country Status (1)

Country Link
JP (1) JPS5538674A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57183700A (en) * 1981-05-08 1982-11-12 Nec Corp Information processor
JPS5955558A (en) * 1982-09-22 1984-03-30 Fujitsu Ltd Cache memory control system
JPS60118957A (en) * 1983-11-30 1985-06-26 Fujitsu Ltd Faulty main storage device address control system in data processing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57183700A (en) * 1981-05-08 1982-11-12 Nec Corp Information processor
JPS5955558A (en) * 1982-09-22 1984-03-30 Fujitsu Ltd Cache memory control system
JPH0122933B2 (en) * 1982-09-22 1989-04-28 Fujitsu Ltd
JPS60118957A (en) * 1983-11-30 1985-06-26 Fujitsu Ltd Faulty main storage device address control system in data processing system
JPH0430622B2 (en) * 1983-11-30 1992-05-22

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