JPS55124826A - Data processing unit - Google Patents

Data processing unit

Info

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
Application number
JP3254779A
Other languages
Japanese (ja)
Inventor
Kazuo Kumagai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3254779A priority Critical patent/JPS55124826A/en
Publication of JPS55124826A publication Critical patent/JPS55124826A/en
Pending legal-status Critical Current

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
JP3254779A 1979-03-20 1979-03-20 Data processing unit Pending JPS55124826A (en)

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)

Similar Documents

Publication Publication Date Title
JPS56140452A (en) Memory protection system
KR830006739A (en) Data processing device
ES481636A1 (en) Programmable control latch mechanism for a data processing system.
JPS55124826A (en) Data processing unit
JPS5528141A (en) Memory unit of electronic computer
JPS55157022A (en) Output circuit for microcomputer
JPS54123838A (en) Memory address control unit for data processor
JPS5694596A (en) Memory control system
JPS5487148A (en) Data processing system by multiplex processor
JPS5563439A (en) Instruction control system for direct data bit
JPS56103746A (en) Information processor
GB1521737A (en) Data processing
JPS57114946A (en) Microprogram controller
JPS5760464A (en) Keyword coincidence detecting device
JPS55115159A (en) Information processing unit
JPS5748130A (en) Input data correction system
JPS553043A (en) Microcomputer control circuit
JPS56103740A (en) Decimal divider
JPS5745659A (en) Memory address managing device
JPS55112661A (en) Memory control unit
JPS57108959A (en) Data storage device of electronic dictionary
JPS575157A (en) Extension system for branch address of microinstruction
JPS57199055A (en) Information processing device
JPS5781650A (en) Data processor
JPS57159348A (en) Microprogram control system