JPS5242037A - Data i/o unit - Google Patents

Data i/o unit

Info

Publication number
JPS5242037A
JPS5242037A JP50116534A JP11653475A JPS5242037A JP S5242037 A JPS5242037 A JP S5242037A JP 50116534 A JP50116534 A JP 50116534A JP 11653475 A JP11653475 A JP 11653475A JP S5242037 A JPS5242037 A JP S5242037A
Authority
JP
Japan
Prior art keywords
data
unit
retransfer
effective
effective flag
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
JP50116534A
Other languages
Japanese (ja)
Other versions
JPS5537027B2 (en
Inventor
Hachiro Okamoto
Takeshi Masui
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50116534A priority Critical patent/JPS5242037A/en
Publication of JPS5242037A publication Critical patent/JPS5242037A/en
Publication of JPS5537027B2 publication Critical patent/JPS5537027B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Information Transfer Systems (AREA)
  • Computer And Data Communications (AREA)

Abstract

PURPOSE: To improve the entire system processing efficiency by improving the effective performance of data I/O unit, by providing effective flag for retransfer other than effective flag, and by making possible the retransfer of the data without being it read in again in the buffer.
COPYRIGHT: (C)1977,JPO&Japio
JP50116534A 1975-09-29 1975-09-29 Data i/o unit Granted JPS5242037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50116534A JPS5242037A (en) 1975-09-29 1975-09-29 Data i/o unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50116534A JPS5242037A (en) 1975-09-29 1975-09-29 Data i/o unit

Publications (2)

Publication Number Publication Date
JPS5242037A true JPS5242037A (en) 1977-04-01
JPS5537027B2 JPS5537027B2 (en) 1980-09-25

Family

ID=14689495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50116534A Granted JPS5242037A (en) 1975-09-29 1975-09-29 Data i/o unit

Country Status (1)

Country Link
JP (1) JPS5242037A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150037A (en) * 1979-05-14 1980-11-21 Hitachi Ltd Control circuit for input/output unit
JPH04309153A (en) * 1991-04-08 1992-10-30 Fujitsu Ltd Data transfer processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150037A (en) * 1979-05-14 1980-11-21 Hitachi Ltd Control circuit for input/output unit
JPH04309153A (en) * 1991-04-08 1992-10-30 Fujitsu Ltd Data transfer processor

Also Published As

Publication number Publication date
JPS5537027B2 (en) 1980-09-25

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