JPS5730183A - Magnetic bubble memory control system - Google Patents
Magnetic bubble memory control systemInfo
- Publication number
- JPS5730183A JPS5730183A JP10328080A JP10328080A JPS5730183A JP S5730183 A JPS5730183 A JP S5730183A JP 10328080 A JP10328080 A JP 10328080A JP 10328080 A JP10328080 A JP 10328080A JP S5730183 A JPS5730183 A JP S5730183A
- Authority
- JP
- Japan
- Prior art keywords
- loop
- position information
- reference position
- minor
- defective
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/86—Masking faults in memories by using spares or by reconfiguring in serial access memories, e.g. shift registers, CCDs, bubble memories
Abstract
PURPOSE:To improve the performance of relieving an element having a defective loop, by using an adjacent perfect loop as a reference position information storage loop when the reference position information storage loop is defective. CONSTITUTION:When the 1st minor loop 31 is defective and the 2nd minor loop 20' is perfect, the 2nd loop substitutes a reference position information loop automatically. Then, a 0 is stored in the area of an ROM correspondig to the minor loop 31 and although the minor loop 20' substituting the reference position information storage loop is perfect, a 0 is also stored in the area of the ROM corresponding to it. In the area of the ROM corresponding to another perfect minor loop 20, a 1 is stored. Thus, defective loop processing is carried out in normal operation to store reference position information without using the minor loop 20'.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10328080A JPS5730183A (en) | 1980-07-28 | 1980-07-28 | Magnetic bubble memory control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10328080A JPS5730183A (en) | 1980-07-28 | 1980-07-28 | Magnetic bubble memory control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5730183A true JPS5730183A (en) | 1982-02-18 |
Family
ID=14349927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10328080A Pending JPS5730183A (en) | 1980-07-28 | 1980-07-28 | Magnetic bubble memory control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5730183A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0557597U (en) * | 1992-01-14 | 1993-07-30 | 東亜高級継手バルブ製造株式会社 | Corrosion resistant material for cast iron pipe ends |
-
1980
- 1980-07-28 JP JP10328080A patent/JPS5730183A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0557597U (en) * | 1992-01-14 | 1993-07-30 | 東亜高級継手バルブ製造株式会社 | Corrosion resistant material for cast iron pipe ends |
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