JPS54104743A - Failure detection system for magnetic memory unit - Google Patents
Failure detection system for magnetic memory unitInfo
- Publication number
- JPS54104743A JPS54104743A JP1112178A JP1112178A JPS54104743A JP S54104743 A JPS54104743 A JP S54104743A JP 1112178 A JP1112178 A JP 1112178A JP 1112178 A JP1112178 A JP 1112178A JP S54104743 A JPS54104743 A JP S54104743A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic memory
- memory unit
- data
- cpu
- control circuit
- 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
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To detect failure earlier, by adding the timing control circuit with slight circuit constitution, reducing useless operation time, executing readout again after data write-in and performing collation check.
CONSTITUTION: In the failure detection system of the magnetic memory unit 11 used for the bulk memory of a digital computer, according to the instruction of the normal or test mode from CPU 25, the data delivered from CPU 25 is memorized on the magnetic memory media 17 according to the normal data arrangement in case of the normal mode, and it is arranged on the magnetic memory unit 17 according to the test data memory arrangement in case of the test mode. This magnetic memory unit 11 is provided with the timing control circuit 18 connected to the peripheral circuits 21 and 22 delivering the normal and test mode timing from CPU 25 to the magnetic memory unit 11, other than the WRITE system control circuit 14 and the READ system control circuit 12, and only the data in test data memory arrangement is delivered to CPU 25 with the test mode.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1112178A JPS54104743A (en) | 1978-02-03 | 1978-02-03 | Failure detection system for magnetic memory unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1112178A JPS54104743A (en) | 1978-02-03 | 1978-02-03 | Failure detection system for magnetic memory unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54104743A true JPS54104743A (en) | 1979-08-17 |
Family
ID=11769171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1112178A Pending JPS54104743A (en) | 1978-02-03 | 1978-02-03 | Failure detection system for magnetic memory unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54104743A (en) |
-
1978
- 1978-02-03 JP JP1112178A patent/JPS54104743A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5539994A (en) | Multiprocessor system | |
JPS54104743A (en) | Failure detection system for magnetic memory unit | |
JPS5593596A (en) | Memory unit | |
JPS5474644A (en) | Control system of microprogram | |
JPS5634194A (en) | Memory unit | |
JPS57156966A (en) | Check apparatus for missing page and incorrect collating of calenders and so on | |
JPS5745647A (en) | Control storage control system | |
JPS5557962A (en) | Error detection system | |
JPS6423354A (en) | Duplex buffer memory control system | |
JPS54120550A (en) | Fault supervisory system of time-division multi-processor | |
JPS5374849A (en) | Checking method for writing data | |
JPS57111759A (en) | Data transfer fault detecting system | |
JPS5528501A (en) | Test system for memory device | |
JPS5617442A (en) | Parity error processing system | |
JPS5683900A (en) | Buffer recording device | |
JPS6457342A (en) | Malfunction detector for data processor | |
JPS55119761A (en) | Memory control unit | |
JPS5790771A (en) | Disk cash control system | |
JPS5759259A (en) | Diagnosing system of computer | |
JPS57178549A (en) | Fault information recorder | |
JPS5592956A (en) | Fault detection system of information processing system | |
JPS5544674A (en) | Microprogram control unit | |
JPS5549764A (en) | Memory control system | |
JPS5597655A (en) | Memory access system | |
JPS55117799A (en) | Fault processing system |