JPS5717045A - Channel device - Google Patents

Channel device

Info

Publication number
JPS5717045A
JPS5717045A JP9165480A JP9165480A JPS5717045A JP S5717045 A JPS5717045 A JP S5717045A JP 9165480 A JP9165480 A JP 9165480A JP 9165480 A JP9165480 A JP 9165480A JP S5717045 A JPS5717045 A JP S5717045A
Authority
JP
Japan
Prior art keywords
data
transfer
circuit
channel
ff4a
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
JP9165480A
Other languages
Japanese (ja)
Other versions
JPS618460B2 (en
Inventor
Masao Hasegawa
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 JP9165480A priority Critical patent/JPS5717045A/en
Publication of JPS5717045A publication Critical patent/JPS5717045A/en
Publication of JPS618460B2 publication Critical patent/JPS618460B2/ja
Granted 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
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26—Functional testing
    • G06F11/267—Reconfiguring circuits for testing, e.g. LSSD, partitioning

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To ensure a diagnosis for the data transfer action of a channel device of single unit, by cutting off an I/O interface when an FF is set and at the same time starting the data transfer sequence. CONSTITUTION:A cutoff circuit 52 that cuts off an I/O interface 44 by an indication of a microprogram plus a transfer starting FF4A produces the signal to request the transfer of data to a channel data transfer part 13 simultaneously with the working of the circuit 42 are incorporated into a channel device 14. A transfer data exists in the data buffer in the part 13 when the data or input is transferred to an input/output device 15; while in the case of the transfer of an output, the circuit 42 and the FF4A are actuated in a state under which the region which can take the transfer data into the data buffer. As a result, the device 14 can actuate the data transfer system irrespectively of the device 15 to carry out a diagnosis.
JP9165480A 1980-07-07 1980-07-07 Channel device Granted JPS5717045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9165480A JPS5717045A (en) 1980-07-07 1980-07-07 Channel device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9165480A JPS5717045A (en) 1980-07-07 1980-07-07 Channel device

Publications (2)

Publication Number Publication Date
JPS5717045A true JPS5717045A (en) 1982-01-28
JPS618460B2 JPS618460B2 (en) 1986-03-14

Family

ID=14032488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9165480A Granted JPS5717045A (en) 1980-07-07 1980-07-07 Channel device

Country Status (1)

Country Link
JP (1) JPS5717045A (en)

Also Published As

Publication number Publication date
JPS618460B2 (en) 1986-03-14

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