JPS55146530A - Data processing device - Google Patents

Data processing device

Info

Publication number
JPS55146530A
JPS55146530A JP5139779A JP5139779A JPS55146530A JP S55146530 A JPS55146530 A JP S55146530A JP 5139779 A JP5139779 A JP 5139779A JP 5139779 A JP5139779 A JP 5139779A JP S55146530 A JPS55146530 A JP S55146530A
Authority
JP
Japan
Prior art keywords
input
buffer
data
control device
buffers
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.)
Granted
Application number
JP5139779A
Other languages
Japanese (ja)
Other versions
JPS6217776B2 (en
Inventor
Hajime Takagi
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 JP5139779A priority Critical patent/JPS55146530A/en
Publication of JPS55146530A publication Critical patent/JPS55146530A/en
Publication of JPS6217776B2 publication Critical patent/JPS6217776B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Information Transfer Systems (AREA)

Abstract

PURPOSE: To make it possible not to halt processing, by transferring a data to be input, to several buffers and performing the processing by use of the buffers by turns.
CONSTITUTION: In case the information generated by an input/output unit 161 is transferred to the buffers A and B in the main memory 11, an input/output control device 13 provides the first input/output command word through a bus (b) from the central processing unit 11, and decides whether the buffer A is free or busy, by reading a lock byte A of the buffer A. In case it is free, the lock byte is made busy and also a data is transferred to the buffer A. When the transfer has been finished, the central processing unit 12 performs processing of a data in the buffer A independently from the input/output control device 13, and at the moment when the processing has been finished, the lock byte is made free. The input/output control device checks the buffer B during the aforesaid time, and transfers a data.
COPYRIGHT: (C)1980,JPO&Japio
JP5139779A 1979-04-27 1979-04-27 Data processing device Granted JPS55146530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5139779A JPS55146530A (en) 1979-04-27 1979-04-27 Data processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5139779A JPS55146530A (en) 1979-04-27 1979-04-27 Data processing device

Publications (2)

Publication Number Publication Date
JPS55146530A true JPS55146530A (en) 1980-11-14
JPS6217776B2 JPS6217776B2 (en) 1987-04-20

Family

ID=12885800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5139779A Granted JPS55146530A (en) 1979-04-27 1979-04-27 Data processing device

Country Status (1)

Country Link
JP (1) JPS55146530A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129628A (en) * 1982-01-29 1983-08-02 Nec Corp Data channel device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53118325A (en) * 1977-03-25 1978-10-16 Fujitsu Ltd Control system for input/output device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53118325A (en) * 1977-03-25 1978-10-16 Fujitsu Ltd Control system for input/output device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129628A (en) * 1982-01-29 1983-08-02 Nec Corp Data channel device

Also Published As

Publication number Publication date
JPS6217776B2 (en) 1987-04-20

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