JPS5719837A - Data processing system - Google Patents

Data processing system

Info

Publication number
JPS5719837A
JPS5719837A JP9343480A JP9343480A JPS5719837A JP S5719837 A JPS5719837 A JP S5719837A JP 9343480 A JP9343480 A JP 9343480A JP 9343480 A JP9343480 A JP 9343480A JP S5719837 A JPS5719837 A JP S5719837A
Authority
JP
Japan
Prior art keywords
carrier
signal
carrier variation
interrupting
interruption
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
JP9343480A
Other languages
Japanese (ja)
Inventor
Yasuo Kubo
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 JP9343480A priority Critical patent/JPS5719837A/en
Publication of JPS5719837A publication Critical patent/JPS5719837A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/10—Program control for peripheral devices
    • G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
    • G06F13/124—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer And Data Communications (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To decline a discrimination time and to elevate a processing capacity, by adding a carrier variation interrupting circuit to a communication processing equipment, in a system having an interruption processing function. CONSTITUTION:A carrier variation detection interrupting circuit is added to a communication processing system 9, and when a data processing equipment 1 decides that an interruption signal (f) caused by detecting a carrier variation is not required, a carrier variation interruption suppressing command is sent out as a control signal (a), a carrier variation detection interrupting mask flip-flop 3 is set, and a carrier variation detection interrupting mask signal (d) is suppressed. After that, a level is converted by a carrier signal from an MODEM4, and a carrier variation detecting signal (c) is outputted, but since a logical gate 7 is closed, a carrier variation detecting interrupting signal (e) is not generated.
JP9343480A 1980-07-09 1980-07-09 Data processing system Pending JPS5719837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9343480A JPS5719837A (en) 1980-07-09 1980-07-09 Data processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9343480A JPS5719837A (en) 1980-07-09 1980-07-09 Data processing system

Publications (1)

Publication Number Publication Date
JPS5719837A true JPS5719837A (en) 1982-02-02

Family

ID=14082196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9343480A Pending JPS5719837A (en) 1980-07-09 1980-07-09 Data processing system

Country Status (1)

Country Link
JP (1) JPS5719837A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6189753A (en) * 1984-10-09 1986-05-07 Fujitsu Ltd Carrier detection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6189753A (en) * 1984-10-09 1986-05-07 Fujitsu Ltd Carrier detection system

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