JPS57101943A - Data processor - Google Patents

Data processor

Info

Publication number
JPS57101943A
JPS57101943A JP17935980A JP17935980A JPS57101943A JP S57101943 A JPS57101943 A JP S57101943A JP 17935980 A JP17935980 A JP 17935980A JP 17935980 A JP17935980 A JP 17935980A JP S57101943 A JPS57101943 A JP S57101943A
Authority
JP
Japan
Prior art keywords
contents
bus
register
selecting circuit
processor
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
JP17935980A
Other languages
Japanese (ja)
Inventor
Kunio Numakura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP17935980A priority Critical patent/JPS57101943A/en
Publication of JPS57101943A publication Critical patent/JPS57101943A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To decrease the quantity of hardware for displaying the contents of a register from a maintenance panel, by providing the second microprocessor of small size in a data processor. CONSTITUTION:In case when display of a register is designated by a mode switch of a maintenance panel 17, a microprocessor 16 sets a microinstruction to a microinstruction register 2 through buses 18, 22. As a result, a bus output selecting circuit 11 and an address selecting circuit 13 are controlled, and contents of one of a pointer 4, a scratch-pad memory 3 and registers 5, 6 are outputted to the bus 22. Subsequently, the processor 16 stores contents of the bus 22 in a control storage 15. After that, the processor 16 stores the contents of the bus 22 in a lamp register 173 and displays its contents on a display lamp 175. In this way, the number of elements of the circuit 11 is decreased, the bus selecting circuit is removed, and also the logical operation is executed at a high speed.
JP17935980A 1980-12-18 1980-12-18 Data processor Pending JPS57101943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17935980A JPS57101943A (en) 1980-12-18 1980-12-18 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17935980A JPS57101943A (en) 1980-12-18 1980-12-18 Data processor

Publications (1)

Publication Number Publication Date
JPS57101943A true JPS57101943A (en) 1982-06-24

Family

ID=16064464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17935980A Pending JPS57101943A (en) 1980-12-18 1980-12-18 Data processor

Country Status (1)

Country Link
JP (1) JPS57101943A (en)

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