JPS6460858A - System for preventing destruction of disk - Google Patents

System for preventing destruction of disk

Info

Publication number
JPS6460858A
JPS6460858A JP62218226A JP21822687A JPS6460858A JP S6460858 A JPS6460858 A JP S6460858A JP 62218226 A JP62218226 A JP 62218226A JP 21822687 A JP21822687 A JP 21822687A JP S6460858 A JPS6460858 A JP S6460858A
Authority
JP
Japan
Prior art keywords
dku1
power
interface memory
instruction
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.)
Granted
Application number
JP62218226A
Other languages
Japanese (ja)
Other versions
JPH0619892B2 (en
Inventor
Jitsuo Sentoda
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62218226A priority Critical patent/JPH0619892B2/en
Publication of JPS6460858A publication Critical patent/JPS6460858A/en
Publication of JPH0619892B2 publication Critical patent/JPH0619892B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To realize the miniaturization and the low price of a power unit, by providing an interface memory which delivers an instruction and information between a central processing unit (CPU) and a disk controller (DKC), and providing a power source with a battery backup circuit capable of supplying a power only to the interface memory, the DKC, and a disk unit (DKU). CONSTITUTION:The interface memory 1-5 which delivers the information required for the control of the DKU1-8 is provided between the CPU1-1 and the DKU1-8. The DKC1-6 controls the write of data on a designated area in the DKU1-8 according to the instruction of the CPU1-1 or the readout of the data from the designated area. And the power unit 1-13 for the interface memory 1-5, the DKC1-6, and the DKU1-8 incorporates the battery backup circuit 1-14. Consequently, it is possible to hold normal output until the instruction under execution on the DKU1-8 is completed normally even when momentary power disconnection occurs in an AC input current 1-12 or power failure is generated. In such a way, it is possible to miniaturize the power unit.
JP62218226A 1987-08-31 1987-08-31 Disk destruction prevention method Expired - Lifetime JPH0619892B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62218226A JPH0619892B2 (en) 1987-08-31 1987-08-31 Disk destruction prevention method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62218226A JPH0619892B2 (en) 1987-08-31 1987-08-31 Disk destruction prevention method

Publications (2)

Publication Number Publication Date
JPS6460858A true JPS6460858A (en) 1989-03-07
JPH0619892B2 JPH0619892B2 (en) 1994-03-16

Family

ID=16716586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62218226A Expired - Lifetime JPH0619892B2 (en) 1987-08-31 1987-08-31 Disk destruction prevention method

Country Status (1)

Country Link
JP (1) JPH0619892B2 (en)

Also Published As

Publication number Publication date
JPH0619892B2 (en) 1994-03-16

Similar Documents

Publication Publication Date Title
MY108933A (en) Data processing system with power-fail protected memory module
JPS59200327A (en) Control system of peripheral device
CA2156538A1 (en) Malfunction Power Switch and Feedback Led for Suspend Systems
JPH04155417A (en) Device for extending function
JP2004227586A (en) Method for initiating power supply to computer system from usb keyboard
EP0565855A3 (en) Data integrity assurance in a disk drive upon a power failure
JPH08129531A (en) Portable computer device
JPS6460858A (en) System for preventing destruction of disk
JP2504864B2 (en) Memory system
JPH01162902A (en) Compact program generating device for pc
JPS5854418A (en) Interruption processing system
JPS63268085A (en) Portable memory medium reading and writing device
JPH05233474A (en) Storage contents protection system
JPS60209863A (en) Control system of data processing device
JPS57143646A (en) Error recovery system for logical device
JPS62140154A (en) Data holding system for memory device
JPS559263A (en) System operation system
JPH02128260A (en) Memory data checking system at the time of turning on/ off power source
JP3163023B2 (en) Electronics
JPH04114218A (en) Power supply control system for computer terminal
JPS5750061A (en) Self-restoring function device of external storage device
JPH04354042A (en) Computer system
JPS61285559A (en) Battery back-up device
EP0296767A2 (en) Data back-up system
JPS6488851A (en) Electronic computer system