JPS55124826A - Data processing unit - Google Patents
Data processing unitInfo
- Publication number
- JPS55124826A JPS55124826A JP3254779A JP3254779A JPS55124826A JP S55124826 A JPS55124826 A JP S55124826A JP 3254779 A JP3254779 A JP 3254779A JP 3254779 A JP3254779 A JP 3254779A JP S55124826 A JPS55124826 A JP S55124826A
- Authority
- JP
- Japan
- Prior art keywords
- ccw
- signal
- retrial
- delivered
- gate
- 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
- Retry When Errors Occur (AREA)
Abstract
PURPOSE: To make easy the retrial of chaining operation, by providing the chain instruction word memory unit storing the chain instruction word provided with the channel unit while the chaining processing is made.
CONSTITUTION: When the decision circuit 16 detects error based on the content of the data bus B1 and the signal of the interruption line I1, the error signal is given to the retrial display unit 17, and the output signal is delivered to the inverter 18 and the CCW memory circuit control section 21. The AND gate 19 is closed with the output of the inverter 18 and the data from the bus B3 is not delivered to the input and output control unit. In this case, with the instruction from the control section 21, CCW stored in the CCW memory circuit 12 is sequentially read out. Thus, since the gate 20 is conductive with the signal from the display unit 17, CCW read out is delivered to the input and output control unit 13 via the gate 20. Further, retrial is made via the control line Co. As a result, normal is obtaned with normal condition, then interruption is caused.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3254779A JPS55124826A (en) | 1979-03-20 | 1979-03-20 | Data processing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3254779A JPS55124826A (en) | 1979-03-20 | 1979-03-20 | Data processing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55124826A true JPS55124826A (en) | 1980-09-26 |
Family
ID=12361950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3254779A Pending JPS55124826A (en) | 1979-03-20 | 1979-03-20 | Data processing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55124826A (en) |
-
1979
- 1979-03-20 JP JP3254779A patent/JPS55124826A/en active Pending
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