JPS6423350A - Information processor - Google Patents

Information processor

Info

Publication number
JPS6423350A
JPS6423350A JP62179033A JP17903387A JPS6423350A JP S6423350 A JPS6423350 A JP S6423350A JP 62179033 A JP62179033 A JP 62179033A JP 17903387 A JP17903387 A JP 17903387A JP S6423350 A JPS6423350 A JP S6423350A
Authority
JP
Japan
Prior art keywords
address
working
area
higher level
operating system
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
JP62179033A
Other languages
Japanese (ja)
Inventor
Fumio Kon
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62179033A priority Critical patent/JPS6423350A/en
Publication of JPS6423350A publication Critical patent/JPS6423350A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the destruction of data by using a memory means containing the hardware which decides an applicable allocated area. CONSTITUTION:The information on a working area 4 or 5 is stored by a setting means 20 in accordance with a working user or a working operating system. Then a fixed value is produced as a higher level address to be given to an address decoder 6. A CPU 1 gives a desired address to the working operating system via an address signal line 8 in order to give an access to the memory area of a magnetic disk 13. The higher level address given to the decoder 6 is fixed by securing such a mechanism where a register 7 could not be rewritten by a system program nor a user program. Thus the data are never destructed.
JP62179033A 1987-07-20 1987-07-20 Information processor Pending JPS6423350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62179033A JPS6423350A (en) 1987-07-20 1987-07-20 Information processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62179033A JPS6423350A (en) 1987-07-20 1987-07-20 Information processor

Publications (1)

Publication Number Publication Date
JPS6423350A true JPS6423350A (en) 1989-01-26

Family

ID=16058939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62179033A Pending JPS6423350A (en) 1987-07-20 1987-07-20 Information processor

Country Status (1)

Country Link
JP (1) JPS6423350A (en)

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