JPS553052A - Control system for data file device - Google Patents
Control system for data file deviceInfo
- Publication number
- JPS553052A JPS553052A JP7535278A JP7535278A JPS553052A JP S553052 A JPS553052 A JP S553052A JP 7535278 A JP7535278 A JP 7535278A JP 7535278 A JP7535278 A JP 7535278A JP S553052 A JPS553052 A JP S553052A
- Authority
- JP
- Japan
- Prior art keywords
- retrial
- cpu8
- error
- control system
- data file
- 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
Abstract
PURPOSE: To secure an effective recovery action for the control system of the data file device by starting the retrial for the SHN (Service Request Not Honoured) error from the address right before occurrence of the error.
CONSTITUTION: In case a delay is produced at the writing action to the main memory of CPU8 while the data of magnetic drum 101 is read out and then transferred to CPU8 via buffer memoty 301, memory 301 has an overflow. At this moment, detection mechanism 311 operates to inform the overflow to control circuit 302. Thus circuit 302 transmits signal 404 to switch on interruption signal line 406 and then informs the end of the error to CPU8. The proper sector address of the retrial is held in retrial register 310 when mechanism 311 has operation. And based on the contents of the sector address, the retrial is given automatically.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7535278A JPS553052A (en) | 1978-06-23 | 1978-06-23 | Control system for data file device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7535278A JPS553052A (en) | 1978-06-23 | 1978-06-23 | Control system for data file device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS553052A true JPS553052A (en) | 1980-01-10 |
Family
ID=13573752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7535278A Pending JPS553052A (en) | 1978-06-23 | 1978-06-23 | Control system for data file device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS553052A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109963A (en) * | 1982-12-15 | 1984-06-25 | Hitachi Ltd | System for controlling writing of information |
JPS6215097A (en) * | 1985-07-09 | 1987-01-23 | 旭化成株式会社 | Rapping boring device and method |
JPH0366431A (en) * | 1990-07-20 | 1991-03-22 | Amada Co Ltd | Method for carrying away product in punch press |
-
1978
- 1978-06-23 JP JP7535278A patent/JPS553052A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59109963A (en) * | 1982-12-15 | 1984-06-25 | Hitachi Ltd | System for controlling writing of information |
JPH0576056B2 (en) * | 1982-12-15 | 1993-10-21 | Hitachi Ltd | |
JPS6215097A (en) * | 1985-07-09 | 1987-01-23 | 旭化成株式会社 | Rapping boring device and method |
JPH0366431A (en) * | 1990-07-20 | 1991-03-22 | Amada Co Ltd | Method for carrying away product in punch press |
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