JPS5534338A - Key memory control system - Google Patents
Key memory control systemInfo
- Publication number
- JPS5534338A JPS5534338A JP10650678A JP10650678A JPS5534338A JP S5534338 A JPS5534338 A JP S5534338A JP 10650678 A JP10650678 A JP 10650678A JP 10650678 A JP10650678 A JP 10650678A JP S5534338 A JPS5534338 A JP S5534338A
- Authority
- JP
- Japan
- Prior art keywords
- reference bit
- fixed time
- memory
- access
- management information
- 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
Links
Landscapes
- Storage Device Security (AREA)
- Memory System Of A Hierarchy Structure (AREA)
Abstract
PURPOSE: To remove automatically the content of the reference bit without access after the passing of a fixed time by constructing the protion in which the reference bit is recorded by a memory element reset if the access is not carried out for a fixed time.
CONSTITUTION: The main memory 7 is divided into a plurality of page frames. The key memory portion is constructed by the management information memory portions 8A and 8B. The management information memory portion 8B is constituted by, for example, dynamic type MOS memory. The contents of the respective reference bit is not made access for a fixed time, it is automatically deleted. In this manner, it is not necessary for the central process device to emit the command for resetting the reference bit R, so that the overhead can be largely reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10650678A JPS5534338A (en) | 1978-08-31 | 1978-08-31 | Key memory control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10650678A JPS5534338A (en) | 1978-08-31 | 1978-08-31 | Key memory control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5534338A true JPS5534338A (en) | 1980-03-10 |
Family
ID=14435304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10650678A Pending JPS5534338A (en) | 1978-08-31 | 1978-08-31 | Key memory control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5534338A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60118948A (en) * | 1983-11-30 | 1985-06-26 | Fujitsu Ltd | Storage key access system |
JPS6451151U (en) * | 1987-09-28 | 1989-03-29 |
-
1978
- 1978-08-31 JP JP10650678A patent/JPS5534338A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60118948A (en) * | 1983-11-30 | 1985-06-26 | Fujitsu Ltd | Storage key access system |
JPH0534702B2 (en) * | 1983-11-30 | 1993-05-24 | Fujitsu Ltd | |
JPS6451151U (en) * | 1987-09-28 | 1989-03-29 | ||
JPH0330753Y2 (en) * | 1987-09-28 | 1991-06-28 |
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